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Neet Biology Morphology Of Flowering Plants Mcq
Quiz 6
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Q.1
Which is correct? ... .. [ JKCMEE 2004]
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a) Orchis has palmate roots
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b) Sweet Potato has root tubers
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c) Pandanus has stilt roots
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d) All the above
Explanation
Pandanus palms, these plants are not closely related to palm trees. They commonly have many thick stilt roots near the base, which provide support as the tree grows top-heavy with leaves, fruit, and branches. Option (c) is correct. Most orchids will have aerial roots reaching out into the air, rather than digging down into the potting media. These roots are looking for a tree branch to attach to. These roots absorb moisture from the air. Option (a) is not correct Sweet Potato tubers only contain root cells and grow on rhizomes. Option (b) is not correct. Answer : (c)
Q.2
Velamen containing structures of epiphyte Vanda are ... ... [ AIIMS 2001]
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a) Stems
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b) Absorbing roots
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c) Hanging roots
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d) Clinging roots
Explanation
Velamen or velamen radicum is a spongy, multiple epidermis that covers the roots of some epiphytic or semi-epiphytic plants, such as orchid and Clivia species. These cells provide support, prevent water loss, and assist the plant in absorbing water from air. Hanging roots/ arial roots grow not from root tissue, but from the plant's stem or leaf tissues. Because they're exposed to the air, they're more likely to dry out and are usually found in plants that live in wet environments, like tropical rain forests. Some aerial roots even have chlorophyll (the plant chemical that helps to convert the sun's energy into food for the plant) and can photosynthesize. Answer : (c)
Q.3
Aril is ... ...[ JIPMER 2002]
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a) Outgrowth of integument
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b) Persistent nucellus
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c) Outgrowth of funicle which grows around the ovule
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d) Outgrowth from micropyle
Explanation
An aril, also called an arillus, is a specialized outgrowth from a seed that partly or completely covers the seed. Aril an outgrowth that grows around and may completely enclose the testa (seed coat) of a seed. It develops from the placenta, funicle, or micropyle of an ovule. The aril surrounding the nutmeg seed forms the spice mace Answer : (c)
Q.4
Ginger plant has an underground stem which is ... .. [ JIPMER 1998]
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a) Rhizome
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b) Bulb
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c) Tuber
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d) Corm
Explanation
Ginger (Zingiber officinale). Commonly called ginger root, the edible portion is actually a rhizome, or underground stem Answer : (a)
Q.5
Science and practice of fruit culture is ... ... [ Pb PT 1997]
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a) Spermology
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b) Pomology
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c) Anthology
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d) Dendrology
Explanation
Pomology is a branch of botany that studies fruit and its cultivation. Spermology is the study of seeds. An anthology is defined as a book that has a large collection of writings in similar form, from a similar time, or about a similar subject manner, but by various authors. Dendrology is the science and study of wooded plants (trees, shrubs, and lianas), specifically, their taxonomic classifications. Answer : (b)
Q.6
Identify the correct order .. . [ EAMCET 2005]Mineral absorption zoneMeristematic zoneMaturation zone Water absorption
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a) 2, 1, 4, 3
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b) 4, 3, 2, 1
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c) 2, 4, 1, 3
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d) 1, 2, 3, 4
Explanation
Answer : (a)
Q.7
A flower which can be divided into two exactly equal halves by any vertical division passing through centre is ... ..[ JKCET 2004]
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a) Zygomorphic
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b) Hypogynous
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c) Actinomorphic
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d) Epigynous
Explanation
Actinomorphic : characterized by radial symmetry, being radially symmetrical and capable of division by any longitudinal plane into essentially symmetrical halves Answer : (c)
Q.8
In grass, ligule occurs on ... .. [ MHTCET 2007]
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a) Sheathing leaf base
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b) Leaf blade
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c) Petiole
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d) Between sheathing leaf base and leaf blade
Explanation
Ligule - A membranous or hairy appendage on the adaxial/upper surface of a leaf, at the junction between sheath and blade, especially in grasses Answer : (d)
Q.9
Storage roots found in clusters at base of stem are ... .... [ kerala 2001]
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a) Nodulose roots
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b) Annulated roots
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c) Tuberous roots
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d) fasciculated roots
Explanation
Fasciculated tuberous roots are modification of adventitious roots for storage of food. Example Dahlia roots Answer : (d)
Q.10
A plant living symbiotically inside another plant is ... ... [ AFMC 1994]
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a) Saprophyte
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b) Endophyte
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c) Semiparasite
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d) Parasite
Explanation
An endophyte is an endosymbiont, often a bacterium or fungus, that lives within a plant for at least part of its life cycle without causing apparent disease. Answer : (b)
Q.11
Seed develops from ... ...[ MPPMT 2010]
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a) Embryo
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b) Ovule
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c) Embryo sac
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d) Ovary
Explanation
Seeds are the product of the ripened ovule, after fertilization by pollen and some growth within the mother plant. Answer : (b)
Q.12
Hygroscopic root occur in ... ...[ AMU 2002]
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a) Vanda
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b) Rhizophora
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c) Bryophyllum
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d) All the above
Explanation
Epiphytic roots and/or hygroscopic roots are roots that absorb the moist atmosphere, dew, and rain. Almost all of the species of Vanda are very large epiphytes found in disturbed areas in habitat and prefer very high light levels, the plants having large root systems. Answer : (a)
Q.13
Major crop of Asia is ... .. [ BHU 2008]
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a) Jowar
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b) Millet
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c) Rice
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d) Sugarcane
Explanation
Answer : (c)
Q.14
Persistent calyx produces a dry bladder around an edible berry in ... ... [ BHU 1987]
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a) Capsicum
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b) Solanum
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c) Nicotiana
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d) Physalis
Explanation
Physalis peruviana, is a South American plant in the nightshade family (Solanaceae) commonly known as Cape gooseberry, calyx surrounding the fruit like a cape Answer : (d)
Q.15
Pepo is fruit of ... ... [ JIPMER 1997]
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a) Cruciferae
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b) Leguminosae
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c) Cucurbitaceae
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d) Liliaceae
Explanation
Pepo: Berry with a hard, thick rind; typical fruit of the gourd family Cucurbitaceae. E.g. watermelon, cucumber, squash, cantelope and pumpkin. Answer : (c)
Q.16
In Colocasia, vegetative reproduction occurs by means of .. .. [ DPMT 1994]
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a) Rhizome
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b) Corm
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c) Offset
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d) Bulb
Explanation
The corm is vertically growing underground stem, which carries on vegetative propagation as in Amorphophallus and Colocasia. Answer : (b)
Q.17
Dionaea muscipula is ... ... [ JIPMER 2000 ]
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a) Venus Fly Trap
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b) Butterwort
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c) Water Fly Trap
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d) Bladderwort
Explanation
Dionaea muscipula is a carnivorous plant, also known as Venus flytrap Answer : (a)
Q.18
Edible part of Groundnut buried in soil is morphologically ... ..[ MPPMT 1995]
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a) Root
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b) Stem
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c) Fruit
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d) Leaf
Explanation
Edible part of Groundnut buried in soil is morphologically fruit and is geocarpic and thus ripens inside the soil itself. Answer : (c)
Q.19
Parasites absorb nourishment from host by ... .. [ JIPMER 1990]
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a) Haustoria
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b) Clinging roots
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c) Fibrous roots
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d) Velamen roots
Explanation
Parasites absorb nourishment from host by Haustoria The haustorium penetrates the tissues of a host and absorbs nutrients and water. Answer : (a)
Q.20
A member of liliaceae is ... .. [ AMU 2009]
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a) Lupine
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b) Petunia
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c) Tulip
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d) Soybean
Explanation
Tulipa is member of liliaceae Other examples of Genera in Liliaceae Amana, Calochortus, Cardiocrinum, Erythronium, Fritillaria, Gagea, Lilium, Lloydia, Medeola, Nectaroscordum, Nomocharis, Notholirion, Prosartes, Scoliopus, Zygadenus Answer : (c)
Q.21
Trimerous flowers occur in ... .. [ Har PMT 2001]
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a) Monocots
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b) Dicots
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c) Gymnosperms
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d) All the above
Explanation
Trimerous definitions · Having three similar segments or parts. · Having flower parts, such as petals, sepals, and stamens, in sets of three. Monocots have flower parts in threes or multiples of threes as shown in the flowers to the left. Answer : (a)
Q.22
A plant with epidermis specialised to absorb moisture from air is ... ... [ EAMCET 2002]
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a) Avicennia
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b) Vanda
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c) Rhizophora
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d) Jussiaea
Explanation
Vanda, plant with epidermis specialised to absorb moisture from air is Answer : (b)
Q.23
In monocotyledonous seeds, endosperm is separated from embryo by a distinct layer of ... .. [ kerala 2008]
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a) testa
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b) Tegmen
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c) Aleurone layer
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d) Scutellum
Explanation
Scutellum in the monocotyledonous seeds, an organ lying between the embryo and endosperm. During germination, the scutellum secretes enzymes involved in the digestion of endosperm. Answer : (d)
Q.24
A stem with distinct solid nodes and hollow internodes is ... ..[ JIPMER 1999]
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a) Sobole
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b) Culm
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c) Scape
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d) intercalary stem
Explanation
A culm is the aerial (above-ground) stem of a grass or sedge. It is derived from Latin culmus 'stalk', and it originally referred to the stem of any type of plant. Answer : (b)
Q.25
Which one of the following has the largest floating leaves ... .... [ Odisha 2006]
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a) Banana
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b) Victoria
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c) Nelumbo
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d) Date Palm
Explanation
Victoria plant has the largest leaves among all aquatic plants. Its leaves are huge, covering a wide area when floating in water. Answer : (b)
Q.26
In Mimosa pudica the placentation is ... ..[ JIPMER 1990]
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a) Basal
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b) Marginal
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c) Parietal
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d) Axile
Explanation
Mimosa pudica the placentation is Marginal Answer : (b)
Q.27
Capitulum inflorescence does not occur in .. .. [ Manipur 2007]
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a) Dahlia
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b) Sunflower
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c) Marigold
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d) China rose
Explanation
Capitula are typical of the Compositae. Capitulum an inflorescence that consists of closely packed flowers or florets which have no stalks and arise on a flattened axis, all at the same level. China rose, also called Chinese hibiscus or Hawaiian hibiscus Answer : (d)
Q.28
Edible part of Mango is ... ..[ AFMC 2010]
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a) Pericarp
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b) Mesocarp
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c) Endocarp
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d) Epicarp
Explanation
The mesocarp, in mango, is the nutritious, fleshy part eaten between the skin and the seed. Answer : (b)
Q.29
Botanical name of Venus Fly Trap is ... ... [ CET Chd. 2002]
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a) Aldrovanda
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b) Dionaea
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c) Utricularia
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d) Nepenthes
Explanation
The Venus flytrap botinical name is Dionaea muscipula, Answer : (b)
Q.30
Pandanus possesses ... ... [ Odisha 1997]
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a) Stilt roots
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b) Prop roots
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c) Climbing roots
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d) Tuberous roots
Explanation
pandanus palms, these plants are not closely related to palm trees. They commonly have many thick stilt roots near the base, which provide support as the tree grows top-heavy with leaves, fruit, and branches. Answer : (a)
Q.31
The plant having monadelphous stamens and axile placentation is ... .. [ kerala 2011]
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a) China Rose
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b) Pea
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c) Cucumber
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d) Lemon
Explanation
The term monadelphous stamens mean that the stamens of the flower have their filaments (stalks) joined to form a tube. China Rose have monadelphous stamens In axile placentation, the ovules are placed along the central axis of the ovary and the carpels are folded inside. It is usually found in fruits like China rose, lemon and tomato. Answer : (a)
Q.32
Drupe occurs in ... ...[ HPPMT 2011]
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a) Pea
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b) Mango
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c) Tomato
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d) Wheat
Explanation
Drupe a fleshy fruit with thin skin and a central stone containing the seed, e.g. mango, a plum, cherry, almond, or olive. Answer : (b)
Q.33
In hydrophytes ... ... [ JIPMER 204]
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a) Root system is well developed
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b) Vascular system is well developed
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c) Root system is poorly developed
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d) Vascular system is poorly developed
Explanation
In hydrophytes, the root system is poorly developed because the plants are surrounded by water. Answer : (c)
Q.34
Pre-chilling treatment to break seed dormancy is ... ... [ JKCMEE 2008]
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a) Scarification
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b) Vernalisation
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c) Impaction
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d) Stratification
Explanation
Stratification. Some seeds contain germination inhibitors that break down when exposed to cold temperatures Scarification in botany involves weakening, opening, or otherwise altering the coat of a seed to encourage germination. Vernalisation the cooling of seed during germination in order to accelerate flowering when it is planted Impaction the act of becoming or the state of being impacted specifically Answer : (d)
Q.35
Staminal tube comes out of flower in ... ... [ RPMT 2005]
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a) Pisum sativum
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b) Cassia fistula
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c) Hibiscus
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d) Iberis
Explanation
Answer : (c)
Q.36
Smallest flowering plant/flower is ... .. [ CPMT 2009]
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a) Polyalthia
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b) Rafflesia
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c) Azadirachta
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d) Wolffia
Explanation
Watermeal (Wolffia spp.) is a member of the duckweed family (Lemnaceae), a family that contains some of the simplest flowering plants. There are various species of the genus Wolffia worldwide, all very small. The plant itself averages 1/42” long and 1/85” wide or about the size of one candy sprinkle. Answer : (d)
Q.37
In Guava and Cucurbits the flowers are ... .. [ W.B. 2008]
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a) Hypogynous
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b) Epigynous
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c) Perigynous
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d) Both a and b
Explanation
Epigynous (of a plant or flower) having the ovary enclosed in the receptacle, with the stamens and other floral parts situated above. In epigynous flowers, the margin of thalamus grows upward enclosing the ovary completely and getting fused with it, the other parts of flower arise above the ovary. Hence, the ovary is said to be inferior as in flowers of guava and cucumber, and the ray florets of sunflower. Answer : (b)
Q.38
Edible part of Banana is .... .... [ CBSE 2001]
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a) Epicarp
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b) Epicarp and mesocarp
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c) Mesocarp and less developed endocarp
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d) Endocarp and less developed mesocarp
Explanation
The edible portion of banana is endocarp and less developed mesocarp. Answer : (d)
Q.39
Pneumatophores are found ... .. [ B.V. 2006]
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a) In deserts
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b) Near river mouths
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c) On mountains
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d) In grasslands
Explanation
Pneumatophores, commonly found in mangrove species that grow in saline mud flats, are lateral roots that grow upward out of the mud and water to function as the site of oxygen intake for the submerged primary root system. Answer : (b)
Q.40
Pericarp and placentae are edible parts of simple fleshy berry fruit ... ..[ KCET 2007]
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a) Tomato
0%
b) Jack fruit
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c) Banana
0%
d) Date palm
Explanation
Tomato is a berry in which the pericarp and placentae are fleshy and edible. Jack fruit is a composite fruit and not a simple fruit. Banana is a false berry and its epicarp is not edible. Date palm is a berry in which the epicarp and mesocarp are edible. Answer : (a)
Q.41
A flask-shaped fleshy receptacle enclosing both the types of flowers is present in ... ...[ Manipal 2000 ]
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a) Cyathium
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b) Hypanthodium
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c) Coenanthium
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d) Spadix
Explanation
Hypanthodium is a special types of inflorescence. The penducle becomes fleshy, flattened and forms a hollow cup with a small opening at the top. The male and female flowers are borne on the inner wall of the cup or receptacles with male flowers are the base of receptacle. The flowers are usually sessile, Answer : (b)
Q.42
Individual components of perianth are called ... .. [ Har PMT 2003 ]
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a) Sepals
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b) Petals
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c) Tepals
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d) Bracts
Explanation
A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals Answer : (c)
Q.43
Asafoetida is ... .. [ JIPMER 2003]
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a) Alkaloid
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b) Oil
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c) Resin
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d) Tannin
Explanation
Asafoetida is an oleo-gum-resin obtained from the exudates of the roots of the Iranian endemic medicinal plant, F. asafoetida. Answer : (c)
Q.44
Gram belongs to family ... ... . [ MPPMT 2001]
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a) Papilionaceae
0%
b) Asteraceae
0%
c) Poaceae
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d) Solanaceae
Explanation
Cicer arietinum, commonly known as chickpea, gram or Bengal gram is an annual legume belonging to family Fabaceae or Papilionaceae. Answer : (a)
Q.45
Match the columns ... .. [ kerala 2007]
Tubercular storage roots
a.
Tinospora
Pneumatophores
b.
Heritiera
Haustoria
c.
Asparagus
Prop roots
d.
Viscum
Assimilatory roots
e. Screwpine
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a) 1 - c, 2 - b, 3 - d, 4 -e, 5 - a
0%
b) 1 - b, 2 -c, 3 -d, 4-e, 5 - a
0%
c) 1 - c, 2 - d, 3 - e, 4 -a, 5 - b
0%
d) 1 - c, 2 - a, 3 -b, 4 - e, 5 - d
Explanation
1) Asparagus shows tubercular storage roots as the food is stored in its roots for perrenation 1 - c, heritiera is called pneumatophore because it lives n waterlogged condition making the roots to develop small opening for brathing. 2 - b, Haustoria are structures which help parasitic plants suck the nutrient and water from host like in viscum. 3 - d, Prop roots are roots which give support to plants like screwpine so that it cans stand erect in marshy soils. 4 -e, Assimilatory roots are roots which are green in colour enabling them to produce their own food through photosynthesis as in tinospora. 5 - a Answer : (a)
Q.46
Thalamus is ... .. [ Bih PMT 1994]
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a) Base of flower
0%
b) Base of ovary
0%
c) Modification of pollen
0%
d) Modification of petal
Explanation
Answer : (a)
Q.47
Why is vivipary an undesirable character for annual crop plants? ... ...[ CBSE 2005]
0%
a) It reduces vigour of the plant
0%
b) It adversely affects the fertility of the plant
0%
c) The seeds exhibit long dormancy
0%
d) The seeds cannot be stored under normal conditions for next season
Explanation
viviparity would mean absence of dormancy. Thus, new generation would be growing in a rather, unsuitable season, which is not desirable as plant may not survive or serve its purpose, i.e. reproducing. Thus seeds of viviparity would not be stored under normal conditions for next season Answer : (d)
Q.48
Root modification is ... .. [ JKCMEE 2007 ]
0%
a) Permanent internal changes in roots
0%
b) Temporary internal changes in roots
0%
c) Permanent structural changes in roots
0%
d) Temporary structural changes in roots
Explanation
Answer : (c)
Q.49
Axis developing between androecium and gynoecium is ... ..[ JIPMER 1990]
0%
a) Anthophore
0%
b) Androphore
0%
c) Gynophore
0%
d) Gynandrophore
Explanation
The androecium is the sum of all the male reproductive organs, and the gynoecium is the sum of the female reproductive organs. A gynophore is the stalk of certain flowers which supports the gynoecium (the ovule-producing part of a flower), elevating it above the branching points of other floral parts. Answer : (c)
Q.50
Asafoetida is obtained from Ferula asafoetida from ... ... [ Pb PMT 2007]
0%
a) Stem
0%
b) Root
0%
c) Leaf
0%
d) Flower
Explanation
Asafoetida is an oleo-gum-resin obtained from the exudates of the roots of the Iranian endemic medicinal plant, F. asafoetida. Answer : (b)
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