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Neet Biology Morphology Of Flowering Plants Mcq
Quiz 10
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Q.1
Bulb is modified ... ... [ Bih PMT 1994]
0%
a) Leaf
0%
b) Shoot
0%
c) Root
0%
d) Flower
Explanation
The stem modification that has enlarged fleshy leaves emerging from the stem or surrounding the base of the stem is called a bulb Leaves are attached to the 'stem' at nodes and spaces between nodes are called internodes. The presence of nodes and internodes means that the bulb is actually a modified stem. The Tunic : The papery outer covering which prevents the scales from drying out The shoot: Developing flower and leaf buds are stored inside the bulb for protection Roots: The roots come out of the basal plate. Basal plate: This compressed stem connects the flower, scales and roots. Scales: Thick, fleshy, modified leaves which stores food and nutrients. Answer : (b)
Q.2
Shield- shaped cotyledon/scutellum occurs in ... ... [ MHTCET 2007]
0%
a) Maize/Sorghum
0%
b) Gram
0%
c) Pea
0%
d) Cucumber
Explanation
The scutellum is a shield-shaped structure surrounding the embryo axis in Maize/Sorghum. Answer : (a)
Q.3
Fruit of Mangifera indica/coconut is ... .. [ CBSE 1991]
0%
a) Berry
0%
b) Drupe
0%
c) Capsule
0%
d) Siliqua
Explanation
Answer : (b)
Q.4
Pneumatophores are found in ... .. [ Odisha 2009]
0%
a) Mesophytes
0%
b) Sciophytes
0%
c) Halophytes
0%
d) Helophytes
Explanation
Pneumatophores, commonly found in mangrove species (halophyte) 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 : (c)
Q.5
Formation of fruit without fertilization is ... .. [ AFMC 2001]
0%
a) Apogamy
0%
b) Apospory
0%
c) Syngenesis
0%
d) Parthenocarpy
Explanation
Parthenocarpy, development of fruit without fertilization. Apogamy definition is - development of a sporophyte from a gametophyte without fertilization. Apospory is the development of 2n gametophytes, without meiosis and spores, from vegetative, or nonreproductive, cells of the sporophyte. Syngenesis definition is sexual reproduction. Answer : (d)
Q.6
In a plant, androecium has monadelphous stamens, monothecous reniform anthers and contorted corolla. It is ... ... [ KCET 2009]
0%
a) Nerium
0%
b) Rauwolfia
0%
c) Hibiscus
0%
d) Lathyrus
Explanation
The term monadelphous stamens mean that the stamens of the flower have their filaments (stalks) joined to form a tube like Hibiscus When the anthers are single chambered, they are termed as Monothecous like in Hibiscus. Contorted or twisted corolla: When overlapping is regular in one direction so that one margin overlaps the next member on one side while its other margin is overlapped by the one before, giving a twisted appearance to the bud. Answer : (c)
Q.7
A dicot plant lacking cotyledons is ... ..[ HPPMT 2005]
0%
a) Cuscuta
0%
b) Pistia
0%
c) Dianthus
0%
d) Ranunculus
Explanation
Cuscuta belongs to Morning-glories family and is of Dicot group Cuscuta seedlings emerge with thread-shaped hypocotyls, and having no roots and cotyledons Answer : (a)
Q.8
An example of a seed with endosperm, perisperm and caruncle is ... ... [ CBSE 2009]
0%
a) Castor
0%
b) Coffee
0%
c) Lily
0%
d) Cotton
Explanation
Castor-oil seed is dicotyledonous (having two cotyledons), endospermic (with a special food storing tissue called endosperm) and perispermic (having perisperm or persistent nucellus). Answer : (a)
Q.9
In Dianthus, placentation is ... ...[ RPMT 2011]
0%
a) Basal
0%
b) Marginal
0%
c) Axile
0%
d) Free central
Explanation
Dianthus is an annual flowering herb has a free central placentation as ovules are borne on the central axis as the septum is absent Answer : (d)
Q.10
Which one is correctly matched ... .... [ AIIMS 2012]
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a) Dahlia - Fasciculated root
0%
b) Monstera - Fibrous roots
0%
c) Basil - Prop root
0%
d) Azadirachta - Adventitious roots
Explanation
Fasciculated roots are the modification of adventitious roots. They arise from the base of the stem and become clusteredn are present in Dahlia Option (a) correct match Monstera the plant roots both into the soil and over trees, it is considered a hemiepiphyte.Option (b) is NOT correct match. Basil plants have fibrous roots. Option (c) is NOT correct match. Azadirachta (Neem) deep tap root and extensive lateral roots. Option (d) is NOT correct match. Answer : (a)
Q.11
Which of the following is insectivorous .. .. [ CPMT 1990]
0%
a) Hydrilla
0%
b) Ricinus
0%
c) Drosera
0%
d) Ranunculus
Explanation
Drosera, commonly known as the sundews, is one of the largest genera of carnivorous plants, Answer : (c)
Q.12
Tetradynamous condition has ... ...[ DPMMT 1994]
0%
a) Six stamens, two short and four long
0%
b) Six stamens, two long and four short
0%
c) Six stamens, two short in outer whorl and four long in inner whorl
0%
d) Four stamens, two short and two long in outer and inner whorls respectively
Explanation
Tetradynamous condition has Six stamens, two short in outer whorl and four long in inner whorl, Cruciferae are tetradynamous Answer : (c)
Q.13
Petunia, Datura and Nicotiana belong to family ... .... [ CPMT 2010]
0%
a) Leguminosae
0%
b) Poaceae
0%
c) Solanaceae
0%
d) Liliaceae
Explanation
Answer : (c)
Q.14
Fruit of Datura is ... .. [ Pb.PMT 1999 ]
0%
a) Pyxidium
0%
b) Septifragal capsule
0%
c) Septicidal capsule
0%
d) Poricidal capsule
Explanation
Septifragal capsule · Definition Referring to a type of fruit dehiscence in which the valves break away from the septa. Fruit of Datura is Septifragal capsule Answer : (b)
Q.15
Monocarpic plant is the one which ... ..[MPPMT 2009]
0%
a) Flowers twice in the year
0%
b) Produces only one fruit
0%
c) Flowers once in life and then dies
0%
d) Bears only one types of flowers
Explanation
Monocarpic plants are those that flower, set seeds and then die. Answer : (c)
Q.16
Schizocarpic fruit has ... .. [ JIPMER 2000 ]
0%
a) Fleshy pericarp
0%
b) Origin from inflorescence
0%
c) Origin from apocarpous pistil
0%
d) Trait of breaking up into single seeded parts
Explanation
Schizocarpic fruit one- seeded parts of the fruit are dehiscent (characterized by splitting or bursting open.) Schizocarpic fruit the fruit on ripening divides into one-seeded segments or mericarp; but the mericarps remain un-ruptured Answer : (d)
Q.17
Select the correct statements ... .. [ Kerala 2011] a) From the region of elongation, some of the epidermal cells form root hairs b) Pneumatophores are seen in Sonneratia c) Adventitious roots are seen in banyan tree d) Maize and Sugarcane have prop roots
0%
a) a and d
0%
b) a, c and d
0%
c) c and d
0%
d) b and c
Explanation
Root hairs are formed only in the zone of differentiation. Statement "a" is NOT correct Sonneratia species grow in oxygen-poor sediments. The cone roots have numerous lenticels that enable gas exchange directly above the surface. Statement "b" is correct Adventitious roots modified for aerial support is called as prop roots. . are found in banyan trees,Statement "c" is correct. Maize and sugarcane show the presence of stilt roots. Statement "d" is not correct Answer : (d)
Q.18
In which of the following fruit dispersal occurs by grazing animals? ... .. [ CPMT 1998]
0%
a) Xanthium
0%
b) Mango
0%
c) Coconut
0%
d) All the above
Explanation
Xanthium seed is covered with stiff, hooked spines, which stick to fur and clothing and can be quite difficult to detach. These burs are carried long distances from the parent plant during seed dispersal by help of animals Answer : (a)
Q.19
Edible part of Ginger is ... ... [ Odisha 2003]
0%
a) Corm
0%
b) Rhizome
0%
c) Bulb
0%
d) Tuber
Explanation
Edible part of Ginger is Rhizome Answer : (b)
Q.20
Epipetalous and syngenesious stamens occur in ... ... [ JIPMER 1990]
0%
a) Solanaceae
0%
b) Brassicaceae
0%
c) Fabaceae
0%
d) Asteraceae
Explanation
Epipetalous stamen is a stamen that is borne over a petal instead of being inserted directly over the thalamus. found in Solanaceae family. Syngenesious stamen are those stamens whose anthers are united together into a tube and its filaments are free. This condition of syngenesious stamen is usually found in the asteraceae family. Answer : (d)
Q.21
Ochreate stipules occur in ... ...[ Odisha 2009]
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a) Leguminosae
0%
b) Polygonaceae
0%
c) Acanthaceae
0%
d) Malvaceae
Explanation
stipules a small leaflike appendage to a leaf, typically borne in pairs at the base of the leaf stalk. A stipule is "ochreate" if a single stipule appears to be a solid tube that goes all the way around the stem. Answer : (b)
Q.22
Plants that grow over the branches of tree without contact with soil are ... . [ Tamil nadu 2001]
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a) Epiphytes
0%
b) Symbionts
0%
c) Saprophytes
0%
d) Parasites
Explanation
Epiphytes differ from parasites in that they grow on other plants for physical support and do not necessarily affect the host negatively. Epiphytes are usually found in the temperate zone (e.g., many mosses, liverworts, lichens, and algae) Answer : (a)
Q.23
Diadelphous condition occurs in ... .. [ CPMT 2004]
0%
a) Solanaceae
0%
b) Fabaceae
0%
c) Asteraceae
0%
d) Liliaceae
Explanation
diadelphous having its stamens fused together at least partly by the filaments so that they form two separate bundles, or a bundle and a lone separate stamen. Fabaceae Androecium Stamens 10 or rarely nine (Abrus, Dalbergia), diadelphous or monadelphous (Crotalaria), posterior stamen is free and filaments of nine are fused to form a sheath around the ovary; in Arachis ten stamens are monadelphous and in Sophora all ten stamens are Answer : (b)
Q.24
What is true of Canna flowers ... .. [ kerala 2012]
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a) Irregular anad bilateral symmetry
0%
b) Irregular and zygomorphic
0%
c) Irreular and radial symmetry
0%
d) Irreglar and asymmetric
Explanation
The asymmetric flower, lacking any plane of symmetry, is rare among angiosperms. Canna indica L. has conspicuously asymmetric flowers resulting from the presence of a half-fertile stamen, while the other androecial members develop as petaloid staminodes or abort early during development. Other examples: Valeriana officinalis Answer : (d)
Q.25
Which one of the following is a total root parasite .. .. [ Bih PMT 2002]
0%
a) Blanophora/Orobanche
0%
b) Viscum
0%
c) Cassytha
0%
d) Drosera
Explanation
Answer : (a)
Q.26
Potato is ( underground) stem because it ... ..[ Odisha 1995]
0%
a) Possesses axillary buds (eye)
0%
b) Lacks chlorophyll
0%
c) Does not bear roots
0%
d) Contains reserve food
Explanation
The potato is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes Answer : (a)
Q.27
Most important character of Brassica campesteris is ... .... [ RPMT 2002]
0%
a) False septum
0%
b) Parietal placentation
0%
c) Ebracteate
0%
d) Imbricate aestivation
Explanation
Parietal placentation A type of placentation found in compound, unilocular ovaries in which the ovules arise from placentae inserted on the wall of the locule near the sutures. found in Brassica campesteris A cross-section of the ovary reveals two carpels. You can see a partition that separates the two carpels (indicated with an arrow). This partition is called a replum and is actually an extension of the placenta. You can also see two developing seeds within this ovary. Answer : (b)
Q.28
The term keel is used for ... ...[ RPMT 2011]
0%
a) Carpels
0%
b) Stamens
0%
c) Petals
0%
d) Sepals
Explanation
When two similar lowermost petals which are more or less joined together form a keel. Found in legume family Fabaceae flowers Answer : (c)
Q.29
Hypanthodium is ... .. [ CBSE 1994]
0%
a) Thalamus
0%
b) Fruit
0%
c) Inflorescence
0%
d) Ovary
Explanation
Hypanthodium is a special types of inflorescence. hypanthium or floral cup is a structure where basal portions of the calyx, the corolla, and the stamens form a cup-shaped tube.. Answer : (c)
Q.30
Spines of simple fruits of Trapa/ Water Chestnut are modified ... ..[ BHU 1996]
0%
a) Styles
0%
b) Sepals
0%
c) Petals
0%
d) Stamens
Explanation
Flowers are produced singly on stalks arising from the center of the floating rosette of leaves. Each flower is bisexual, bearing a two chambered ovary, four stamens and four white petals. Four triangular sepals surround the flower and develop into barbed spines in the mature fruit. Answer : (b)
Q.31
Stem modification having vascular bundle is ... .. [ AFMC 2010]
0%
a) Prickle
0%
b) Thorn
0%
c) Bristle
0%
d) All the above
Explanation
Answer : (b)
Q.32
Edible part in the fruit of Hesperidium is ... .. [ JKCMEE 2007]
0%
a) Endocarp
0%
b) Mesocarp
0%
c) Juicy hairs
0%
d) Pericarp
Explanation
The fleshy interior of Hesperidium is composed of separate sections, called carpels, filled with fluid-filled vesicles that are specialized hair cells. Answer : (c)
Q.33
Placentation in a syncarpous unilocular ovary where ovules occur on sutures is ... ... [ CBS 1999 ]
0%
a) Apical placentation
0%
b) Parietal placentation
0%
c) Marginal placentation
0%
d) Superfical placentation
Explanation
Answer : (b)
Q.34
Which of the following is/are an angiospermic hydrophyte? ... ... [ CPMT 2010]
0%
a) Hydrilla
0%
b) Vallisneria
0%
c) Zizyphus
0%
d) Both a and b
Explanation
Aquatic plants are plants that have adapted to living in aquatic environments (saltwater or freshwater). They are also referred to as hydrophytes. Hydrilla and Vallisneria are angiospermic hydrophyte Ziziphus is a genus of about 40 species of spiny shrubs and small trees in the buckthorn family. Answer : (d)
Q.35
Bracts, perianth and seeds are edible parts of ... ...[ MPPMT 2010]
0%
a) Cocos nucifera
0%
b) Mangifera indica
0%
c) Argemone mexicana
0%
d) Artocarpus heterophyllus
Explanation
is the scientific name of jackfruit which is a sorosis in which bracts and perianth become fleshy and are edible. Answer : (d)
Q.36
Tetradynamous condition is characteristic of family ... ... [ AMU 1997]
0%
a) Papilionaceae/Pea
0%
b) Cruciferae/Mustard/Brassicaceae
0%
c) Solanaceae/Tomato
0%
d) Malvaceae/Cotton
Explanation
tetradynamous: having six stamens four of which are longer than the others , Cruciferae are tetradynamous. Answer : (d)
Q.37
Flowers are exclusively bisexual in ... ... [ CMC 2003]
0%
a) Cucurbits
0%
b) Euphorbias
0%
c) Malvaceae
0%
d) Asteraceae
Explanation
General Characters of Malvaceae: Flowers—regular, bisexual , hypogynous, often showy, cyclic. Sepals—5, more or less united, often subtended by an epicalyx (excepting Sida, Abutilon, etc.), valvate. Petals—5, free from one another but adnate at the base to the staminal tube, twisted. Asteraceae flowers are bi- or unisexual. Answer : (c)
Q.38
The smallest angiospermic/dicot parasite is ... .. [ JIPMER 1997]
0%
a) Arceuthobium
0%
b) Wolffia
0%
c) Cassytha
0%
d) Rafflesia
Explanation
The genus Arceuthobium is a member of the plant family Viscaceae and is a clearly defined group of small (generally less than 20 cm high), variously coloured flowering plants that are aerial parasites on conifers of the families Pinaceae and Cupressaceae. Answer : (a)
Q.39
Edible part of fleshy fruit is .... ... [ Manipal 2005]
0%
a) Parenchymatous pulp
0%
b) Soft seeds
0%
c) Collenchymatous rind
0%
d) Sclerenchymatous endocarp
Explanation
parenchymatous consisting of or relating to the cellular tissue making up the softer parts of leaves, pulp of fruits, bark and pith of stems, etc. Parenchymatous cells are found in Pulp of fruit Answer : (a)
Q.40
Which is not a product of root ... ... [CPMT 1993]
0%
a) Sugarbeet
0%
b) Carrot
0%
c) Radish
0%
d) Potato
Explanation
Potato is stem Answer : (d)
Q.41
Cremocarp fruit of Coriander is ... .. [ EAMCET 1999 ]
0%
a) Fleshy fruit
0%
b) Schizocarp fruit
0%
c) Aggregate fruit
0%
d) Composite fruit
Explanation
Schizocarps are fruits in which each carpel of a compound ovary splits apart to form two or more parts, each with a single seed. Schizocarps are found in the carrot family (Apiaceae), coriander/cilantro (Coriandrum sativum) belongs to Apiaceae Answer : (b)
Q.42
Bladders of Utricularia and pitcher of Nepenthes are modifications of ... ..[ JKCMEE 2004]
0%
a) Leaves
0%
b) Stem
0%
c) Roots
0%
d) Flowers
Explanation
In Utricularia, the leaf is modified into bladder. In Nepenthes, the leaf is modified into pitcher. Hence, it is also called as pitcher plant. Answer : (a)
Q.43
Sunflower belongs to family ... .. [ DPMT 2009]
0%
a) Liliaceae
0%
b) Cruciferae
0%
c) Fabaceae
0%
d) Asteraceae
Explanation
Sunflower belongs to family Asteraceae Answer : (d)
Q.44
Thorn is a stem structure because it ... ..[ CPMT 1995]
0%
a) Develops from truck
0%
b) Develops from axillary bud
0%
c) Grows from extenal surface
0%
d) Is pointed
Explanation
The thorn is technically a modified, sharp-pointed stem. The spine is technically a modified, sharp-pointed leaf. Since it has a bud in its axil, the spine occurs in the relative position of a leaf. Some spines are called "stipular spines" because they are modified, sharp-pointed stipules at the base of a leaf. Answer : (b)
Q.45
Keel is characteristic of flower ... .. [ CBSE 2010]
0%
a) Bean
0%
b) Cassia
0%
c) Gulmohr
0%
d) Calotropis
Explanation
When two similar lowermost petals which are more or less joined together form a keel. Found in legume family Fabaceae flowers Keel is characteristic of Bean Answer : (a)
Q.46
Endospem is consumed by the developing embryo in ... .. [ CBSE 2008]
0%
a) Coconut
0%
b) Pea
0%
c) Maize
0%
d) Castor
Explanation
Endosperm, tissue that surrounds and nourishes the embryo in the seeds of angiosperms (flowering plants). In some seeds the endosperm is completely absorbed at maturity (e.g., pea and bean), and the fleshy food-storing cotyledons nourish the embryo as it germinates. Answer : (b)
Q.47
A root is adventitious when it is ... .. [ CPMT 2002]
0%
a) Swollen
0%
b) Growing in marshy places
0%
c) Formed from plumule
0%
d) Modified for storage
Explanation
Adventitious roots are plant roots that form from any nonroot tissue and are produced both during normal development and in response to stress conditions, such as flooding, nutrient deprivation, and wounding. The first leaves originate at seed germination from plumule, and the following leaves to appear come from terminal and axillary buds of stems and branches. Answer : (c)
Q.48
Pineapple (Ananas) fruit develops from ... ... [ CBSE 2006]
0%
a) Cluster of flowers borne compacty on a common axis
0%
b) Multilocular monocarpellary flower
0%
c) Unilocular polycarpellary flower
0%
d) Multipistillate syncarpous flower
Explanation
The fruit of Ananas comosus (pineapple or ananas) is sorosis, (a type of multiple fruits), developing from spike, spadix or catkin. In this type, the flowers associate by their succulent tepals, the axis bearing them grows and becomes fleshy or woody, thus, the whole inflorescence turns into a compact fruit. Answer : (a)
Q.49
How many plants in the given list have marginal placentation: Mustard, Gram, Tulip, Asparagus, Arhar, Sunn Hemp, Chilli, Colchicum, Onion, Moong, Tobacco, Lupin .. ..[ CBSE 2012]
0%
a) Four
0%
b) Five
0%
c) Six
0%
d) Three
Explanation
Axile : onion, Asparagus, tobacco, chilli, tulip, colchicum Parietal : Mustard Marginal : Gram, arhar, moong, lupin, sunhemp Answer : (b)
Q.50
Fruit bearing plants are ... .. [ Har PMT 1994]
0%
a) Gymnosperms
0%
b) Dicoty;edons
0%
c) Angiosperms
0%
d) Spermatophytes
Explanation
Angiosperms are plants that produce flowers and bear their seeds in fruits Answer : (c)
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