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Neet Biology Morphology Of Flowering Plants Mcq
Quiz 9
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Q.1
In Groundnut the food/oil reserve is present in .. ..[ CBSE 1990]
0%
a) Epicarp
0%
b) Mesocarp
0%
c) Endosperm
0%
d) Cotyledon
Explanation
In Groundnut the food/oil reserve is present in Cotyledon Answer : (d)
Q.2
In Nepenthes the pitcher is modified ... .. [ keral 2001]
0%
a) Whole leaf
0%
b) Leaf apex
0%
c) Lamina
0%
d) Petiole
Explanation
Nepenthes , also called pitcher-plant bears special type of leaves. Leaf-base is winged, petiole is tendrillar and lamina is modified into pitcher-like structure having a coloured lid which attracts the insects and keeps the pitchei closed during immaturity. Answer : (c)
Q.3
Which of the following is asymmetrical flower ... ... [ Tamil nadu 2001]
0%
a) Clitoria
0%
b) Canna
0%
c) Crotalaria
0%
d) Hibiscus
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 : (b)
Q.4
The fruit of Annona squamosa ( Custard apple) is ... .. [ AFMC 2004]
0%
a) Etaerio of berries
0%
b) Etaerio of drupes
0%
c) Hypanthodium
0%
d) Etaerio of achenes
Explanation
Etaerio of berries: In Anona squomosa (Custard apple, Annonaceae family) the berries become very fleshy and being crowded together on a thick thalamus form a complex single fruit . The apices of berries fuse together forming something like a common the tough outer skin . Answer : (a)
Q.5
A biparous cyme ending in uniparous cymes constitutes ... ...[ JIPMER 2000 ]
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a) Verticillaster
0%
b) Panicle
0%
c) Thyrsus
0%
d) Paniculate cyme
Explanation
Biparous or Dichasial Cyme: In this type of inflorescence the peduncle bears a terminal flower and stops growing. uniparous cyme producing only one axis at each branching. Verticillaster a mixed inflorescence (as in many labiates) consisting of a pair of much-condensed nearly compacted arranged around an axis like a whorl of glower growing around a stem Answer : (a)
Q.6
Which one is monocot albuminous seed ... .. [Har. PMT 2003]
0%
a) Maize
0%
b) Wheat
0%
c) Rice
0%
d) All the above
Explanation
Seeds with an endosperm at maturity are termed albuminous seeds. Most monocots (e.g. grasses and palms) and many dicots (e.g. brazil nut and castor bean) have albuminous seeds. All gymnosperm seeds are albuminous. The seed coat develops from the tissue, the integument, originally surrounding the ovule. Answer : (d)
Q.7
The most advanced type of inflorescence is ... ...[ BHU 1990]
0%
a) Corymb
0%
b) Capitulum
0%
c) Spadix
0%
d) Polychasial cyme
Explanation
Inflorescence, in a flowering plant, a cluster of flowers on a branch or a system of branches. 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. The capitulum is surrounded or subtended by an involucre of bracts giving it the appearance of a single flower. Capitula are typical of the Compositae Thus most advanced type of inflorescence is Capitulum Answer : (b)
Q.8
Tricarpellary, syncarpous superior ovary occurs in ... .. [JKCMEE 2007]
0%
a) Allium
0%
b) Dolichos
0%
c) Oenothera
0%
d) Solanum
Explanation
Allium is a genus of species of flowering plants belonging to family Liliaceae Gynoccium charcteristic is Tricarpellary, syncarpous; ovary superior, axile Placentation; style simple; stigma three- lobed. Answer : (a)
Q.9
Vegetative reproduction of Agave occurs through ... ...[ CBSE 1991]
0%
a) Rhizome
0%
b) Stolon
0%
c) Bulbils
0%
d) Sucker
Explanation
The definition of is Bulbils a small bulblike structure, especially in the axil of a leaf or at the base of a stem, that may form a new plant. Answer : (c)
Q.10
Micropyle occurs in ... ... [ BHU 2008]
0%
a) Ovary
0%
b) Seeds
0%
c) Ovule
0%
d) Both b and c
Explanation
Micropyle a small opening in the surface of an ovule, through which the pollen tube penetrates, often visible as a small pore in the ripe seed. Answer : (d)
Q.11
Which one is not correctly matched ... ... [ AIEEE 2003]
0%
a) Mucor - Autotroph
0%
b) Orobanche - Root parasite
0%
c) Cuscuta - Stem parasite
0%
d) Drosera - Insectivore
Explanation
Mucor, also called mould, is a very common saprophytic fungus growing abundantly on decayed organic matters, particularly on those rich in carbohydrates—starch and sugar. Thus option (a) is NOT correctly matched Answer : (a)
Q.12
Floral formula of Pea is
0%
a)
0%
b)
0%
c)
0%
d)
Explanation
Pea belong to Fabaceae Answer : (b)
Q.13
Monadelphous androecium occurs in ... ..[ BHU 1995]
0%
a) Pea
0%
b) Hibiscus
0%
c) Brassica
0%
d) Helianthus
Explanation
The term monadelphous stamens mean that the stamens of the flower have their filaments (stalks) joined to form a tube Answer : (b)
Q.14
Oil yielding legume is ... ... [ MPPMT 2004]
0%
a) Carthamus
0%
b) Glycine max
0%
c) Ricinus
0%
d) Vigna sinensis
Explanation
Glycine max common name is soybean Soybeans are processed for their oil, Oil accounts for 18% to 20% of the weight of soybean seeds, which is low relative to most other oilseed crops. Answer : (b)
Q.15
A plant living for a few days is ... ..[ Odisha 2004]
0%
a) Annual
0%
b) Ephemeral
0%
c) Biennial
0%
d) Perennial
Explanation
Ephemeral means lasting for a very short time. Ephemeral means plants which have short life spans, rapid rates of growth, and high levels of seed production are also termed ruderals. Answer : (b)
Q.16
Anthesis is ... ... [ CBSE 2004]
0%
a) Opening of floral bud
0%
b) Development of anthers
0%
c) Maturation of anthers
0%
d) Reception of pollen by stigma
Explanation
Anthesis is the period during which a flower is fully open and functional. Answer : (a)
Q.17
Which one is an insectivorous plant? ... ..[ Odisha 2009]
0%
a) Vallisneria
0%
b) Rafflesia
0%
c) Santalum
0%
d) Nepenthes
Explanation
Nepenthes is an insectivorous plant Answer : (d)
Q.18
Largest flower is that of ... .. [ BHU 2005]
0%
a) Sunflower
0%
b) Rafflesia
0%
c) Nelumbo
0%
d) Drosera
Explanation
Answer : (b)
Q.19
Presence of sheathing leaf base and ligule are characteristic of .. ..[ BHU 1992]
0%
a) Cycas leaf
0%
b) Fern leaf
0%
c) Banana leaf
0%
d) Grass leaf
Explanation
In many plants the leaf base expands into a sheath which partially or wholly clasps the stem. This sheathing leaf base is of frequent occurrence among monocotyledons. A ligule is a thin outgrowth at the junction of leaf and leafstalk of many grasses (Poaceae) Answer : (d)
Q.20
Non-essential floral organs without differentiation of calyx and corolla are called ... ..[ MHTCET 2007]
0%
a) Thalamus
0%
b) Pedicel
0%
c) Perianth
0%
d) Lodicules
Explanation
periant is the non-reproductive part of the outer part of a flower, consisting of the calyx (sepals) and corolla (petals). Answer : (c)
Q.21
In hypogeal germination plumule comes out of ground due to elongation of ... ... [ Odisha 2010]
0%
a) Hypocotyl
0%
b) Epicotyl
0%
c) Cotyledons
0%
d) Both a and b
Explanation
Hypogeal germination implies that the cotyledons stay below the ground. The epicotyl (part of the stem above the cotyledon) grows, while the hypocotyl (part of the stem below the cotyledon) remains the same in length. In this way, the epicotyl pushes the plumule above the ground. Answer : (b)
Q.22
Potato tuber is modified/Edible part of Potato is ... ... [ CPMT 2009]
0%
a) Stem
0%
b) Bulb
0%
c) Stolon
0%
d) Root
Explanation
Potato tuber is modified or the edible part of potato is stem Answer : (a)
Q.23
A plant will lose its economic value if the fruit are induced through parthenocarpy ... ..[ CBSE 1997]
0%
a) Orange
0%
b) Banana
0%
c) Pomegranate
0%
d) Grape
Explanation
Parthenocarpy is a condition in which the fruit develops independently of fertilization,it is responsible for seedless cultivars. The sarcotesta is a fleshy seedcoat in pomegranate is the edible part and parthenocarpy will make the fruit seedless and hence they will be useless. Answer : (c)
Q.24
Which roots amongst the following grow against gravitational force ... .. [ HPPMT 2012]
0%
a) Prop roots
0%
b) Stilt roots
0%
c) Buttress roots
0%
d) Pneumatophores
Explanation
Pneumatophores are lateral roots that grow upward (negative geotropism) for varying distances and function as the site of oxygen intake for the submerged primary root system Answer : (d)
Q.25
The floral characters of liliaceae are .... ... [ kerala 2008]
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a) Six tepals, zygomorphic, six stamens, bilocular ovary, axile placentation
0%
b) Tetramerous, actinomorphic, polyphyllous, unilocular ovary, axile placentation
0%
c) Trimerous, actinomorphic, polyandrous, superior ovary, axile placentation
0%
d) Bisexual, zygomorphic, gamophyllous, inferior ovary, marginal placentation
Explanation
Floral characters of liliaceae Flower: Regular, actinomorphic, zygomorphic unisexual (Smilax), hypogynous, trimerous. Gynoccium: Tricarpellary, syncarpous; ovary superior, axile Placentation; style simple; stigma three- lobed. Androecium: Six, in two whorls, rarely 3, polyandrous, epiphyllous, and anthers oblong or linear, 2-celled. Answer : (c)
Q.26
In obdiplostemonous androecium, stamens are arranged in ... [ EAMCET 2002]
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a) One whorl alternating with petals
0%
b) Two whorls with outer whorl opposite the petals
0%
c) Two whorls with outer whorl alternating with petals
0%
d) One whorl opposite the petals
Explanation
obdiplostemonous : having the stamens in two whorls with those of the outer whorl opposite the petals With two series of stamens with twice the number of stamens as petals and those of the outer series inserted opposite the petals and those of the inner series inserted opposite the sepals. Answer : (b)
Q.27
Cyathium and hypanthodium types of inflorescence are similar in having ... ...[ BHU 1990]
0%
a) Nectar glands
0%
b) Apical pore
0%
c) Petaloid bracts
0%
d) Unisexual flowers
Explanation
Cyathium:
Hypanthodium:
1. Special type of inflorescence where floral axis is condensed and forms a cup-shaped structure.
1. Special type of inflorescence where floral axis is fleshy closed and becomes pear shaped receptacle.
2. The Involucre with nectary gland.
2. No such structure present.
3. Flowers are unisexual and in cymose clusters at the base of cup-shaped axis.
3. Flowers are also unisexual but in cymose clusters on the inner wall of receptacle.
4. A single reduced female flower at the middle surrounded by a number of reduced male flowers.
4. Female flowers are at the base and male flowers near the ostiole.
Answer : (d)
Q.28
A fruit having endocarp with sub-epidermal juicy hair, spongy white mesocarp and leathery epicarp with oil glands is ....[ AFMC 1998]
0%
a) Hesperidium
0%
b) Pome
0%
c) Pepo
0%
d) Drupe
Explanation
Citrus fruits are classified as a hesperidium. Hesperidium is a modified berry resulting from a single ovary. The fruit consists of 8–16 carpels that form the core of the fruit or segments that contain the seeds and juice. hypodermis, outer mesocarp, and oil glands. In the segments, juice is contained in closely packed, club-shaped multicellular sacs, also called juice vesicles, which completely fill the segments. A thin wall called the carpellary septum surrounds the segments. Each juice sac also has a very minute oil gland at the center. The seeds (ovules) are also attached to segment walls by means of axial placentation Answer : (a)
Q.29
Syngenesious condition is found in ... ..[ CBSE 1991]
0%
a) Asteraceae
0%
b) Labiatae
0%
c) Solanaceae
0%
d) Fabaceae
Explanation
Syngenesious condition the anthers of the filaments are fused to form the tubular mass or group and their filaments remain free. In Asteraceae, tThere are usually five stamens. The filaments are fused to the corolla, while the anthers are generally connate (syngenesious anthers), thus forming a sort of tube around the style (theca). Answer : (a)
Q.30
Thorn of Bougainvillea is modified ... ... [ Bih PMT 1994]
0%
a) Stem
0%
b) Leaf
0%
c) Floral bud
0%
d) Root
Explanation
Thorns in Bougainvillea are modifications of stem. They act as protection against grazing animals. Answer : (a)
Q.31
Which one is pitcher plant ... ... [ KCET 2004]
0%
a) Aristolochia
0%
b) Utricularia
0%
c) Drosera
0%
d) Nepenthes
Explanation
Nepenthes, also called tropical pitcher plant or monkey cup, genus of carnivorous pitcher plants that make up the only genus in the family Nepenthaceae Answer : (d)
Q.32
Outermost layer of endosperm of Maize grain is ... ... [ Har.PMT 2007]
0%
a) Epidermis
0%
b) Pericarp
0%
c) Tunica
0%
d) Aleurone
Explanation
The aleurone layer is the outermost layer of the endosperm, followed by the inner starchy endosperm. This layer of cells is sometimes referred to as the peripheral endosperm. It lies between the pericarp and the hyaline layer of the endosperm Answer : (d)
Q.33
In Lathyrus aphaca, the leaves are modified into ... ..[ AIIMS 1997]
0%
a) Spines
0%
b) Tendrils
0%
c) Seales
0%
d) Stem-like structures
Explanation
In plants yellow vetch (Lathyrus aphaca), the whole leaf is modified to become tendrils while the stipules become enlarged and carry out photosynthesis. Still others use the rachis of a compound leaf as a tendril, such as members of the genus Clematis Answer : (b)
Q.34
Individual flowers are attached to inflorescence axis by ... ... [ Tamil nadu 2001]
0%
a) Peduncle
0%
b) Petiole
0%
c) Pedicel
0%
d) Bract
Explanation
Pedicel a small stalk bearing an individual flower in an inflorescence. Answer : (c)
Q.35
Floral bud tendril is found in ... . [ BHU 1997]
0%
a) Antigonon
0%
b) Smilax
0%
c) Rose
0%
d) Bryophyllum
Explanation
Answer : (a)
Q.36
Petiole part of the leaf is also known as ... ... [ Odisha 2012]
0%
a) Epipodium
0%
b) Mesopodium
0%
c) Hyphopodium
0%
d) None of the above
Explanation
Mesopodium: the region of a leaf primordium corresponding to the petiole Epipodium Synonym of lamina Hyphopodium is a short 1-celled or 2-celled often lobed outgrowth from the mycelium of various ectoparasitic fungi that serves to attach the fungus to the host Answer : (b)
Q.37
Scientific name of Ragi is ... .... [ HPPMT 2011]
0%
a) Avena sativa
0%
b) Sorghum vulgare
0%
c) Eleusine coracana
0%
d) Pennisetum typhoides
Explanation
Scientific name of Ragi or Finger millet is Eleusine coracana, Answer : (c)
Q.38
In catkin, the flowers are ... ...[ AMU 1999 ]
0%
a) Unisexual and sessile
0%
b) Bisexual and sessile
0%
c) Unisexual and pedicellate
0%
d) Bisexual and pedicellate
Explanation
A catkin or ament is a slim, cylindrical flower cluster (a spike), with inconspicuous or no petals, usually wind-pollinated (anemophilous) but sometimes insect-pollinated (as in Salix). They contain many, usually unisexual flowers, arranged closely along a central stem that is often drooping. Sessile flowers are those which do not have a pedicel. Answer : (a)
Q.39
Which is not correctly matched in respect to edible part ... .. [ CPMT 1992]
0%
a) Mango - mesocarp
0%
b) Litchi - fleshy aril
0%
c) Groundnut - embryo and cotyledons
0%
d) Coconut - endocarp
Explanation
he coconut fruit is a drupe fruit, and its edible part is the endosperm Answer : (d)
Q.40
Penetrating roots of Cuscuta are ... .. [ JIPMER 1999]
0%
a) Haustoria
0%
b) Stilt roots
0%
c) Climbing roots
0%
d) Assimilatory roots
Explanation
Penetrating roots of Cuscuta are Haustoria Answer : (a)
Q.41
Nature of fruit developing from a flower depends upon the type of ... ... [ KCET 2002]
0%
a) Gynoecium
0%
b) Androecium
0%
c) Pollination
0%
d) Fertilisation
Explanation
The gynoecium is the sum of the female reproductive organs. A gynoecium can be of three types: Monocarpous, gynoecium has a single carpel examples Avocado, peach , plum, , apricot, cherry, olive, mango and almond Apocarpous, gynoecium has multiple, distinct (free, unfused) carpels, example raspberries,Strawberry, buttercup, michelia. Syncarpous, gynoecium has multiple carpels fused into a single structure, examples Citrus Fruits Answer : (a)
Q.42
Viscum is ... ..[ AFMC 2004]
0%
a) Total stem parasite
0%
b) Total root parasite
0%
c) Partial stem parasite
0%
d) Partial root parasite
Explanation
Partial parasite characteristics: A parasite that depends on the host for some requirements. Photosynthetic and produce their own food, depending on the host for water and shelter Called hemiparasitic plants Contain chlorophyll ( chlorophyllous) Answer : (c)
Q.43
Fruit dispersal in Asteraceae is usually by ... ... [ EAMCET 1995]
0%
a) Mechanical means
0%
b) Wind
0%
c) Water
0%
d) Animal
Explanation
The members of Asteraceae produce a type of fruit called an achene, which is dry and single-seeded and does not open at maturity. The seeds of many Asteraceae species are distributed in a variety of ways, often aided by modifications of the floral pappus. When the pappus consists of numerous capillary bristles, it facilitates distribution of the achenes by the wind by providing buoyancy. Answer : (b)
Q.44
An edible inflorescence is ... ... [ RPMT 1995]
0%
a) Raphanus sativus
0%
b) Brassica oleracea
0%
c) Brassica rapa
0%
d) Mustard
Explanation
Brassica oleracea is a plant species that includes many common foods as cultivars, including cabbage, broccoli, cauliflower, kale, Brussels sprouts, collard greens, Savoy cabbage, kohlrabi, and gai lan. In its uncultivated form, it is called wild cabbage, and is native to coastal southern and western Europe. Answer : (b)
Q.45
Sorghum and Cotton are respectively useful for ... .. [ EAMCET 2006] (a) Blood purification and organic fertilizer (b) Animal food and paper industry (c) B vitamin and cosmetics (e) Explosives and organic fertilizer
0%
a) a, b
0%
b) c, d
0%
c) b, c
0%
d) b, d
Explanation
Cotton and its derivatives are high in vitamin E, antioxidants and omega-3 fatty acids, which are all anti-inflammatory, thus used in cosmetics Cotton paper, also known as rag paper, is made using cotton linters or cotton from used cloth (rags) as the primary material. Sorghum is rich in thiamin, riboflavin, niacin, pantothenate, and vitamin B-‐6 In animal nutrition, grain sorghum is mostly used as an energy source and is a good feedstuff for poultry, pigs and ruminants. Answer : (c)
Q.46
An inflorescence which is not racemose and appears like a flower is ... ...[ JIPMER 1996]
0%
a) Capitulum
0%
b) Cymose
0%
c) Cyathium
0%
d) Corymb
Explanation
Racemose is a flower cluster cyathium consists of: Five (rarely four) bracteoles. These are small, united bracts, which form a cup-like involucre. Answer : (c)
Q.47
In Pineapple ( Ananas sativus) the fruit is ... ... [ CPMT 1993]
0%
a) Pepo
0%
b) Drupe
0%
c) Etaerio of achenes
0%
d) Sorosis
Explanation
Sorosis: a fleshy multiple fruit composed of many flowers, seed vessels, and receptacles consolidated, as in the pineapple and mulberry. Answer : (d)
Q.48
A number of sessile flowers grow on a suppressed peduncle forming a globose inflorescence called ... .[ CPMT 1997]
0%
a) Catkin
0%
b) Corymb
0%
c) Umbel
0%
d) Capitate
Explanation
When a large number of sessile flowers grow from a suppressed rachis giving rise to a more or less globose structure, it is termed a capitate inflorescence. This differs from capitulum (described below) in having no receptacle. This is seen in. many leguminous plants like Acacia, Mimosa, Albizzia, clover, etc. Answer : (d)
Q.49
Beauty of Bougainvillea flowers is due to ... ..[ AFMC 1999]
0%
a) Corolla
0%
b) Calyx
0%
c) Bracts
0%
d) Androecium
Explanation
Brightly Colored Bracts are although not technically part of the bougainvillea flower, specialized leaves called bracts surround the tiny true flowers. Bracts come in many bright colors, making bougainvillea a strikingly colorful garden plant. Three papery-looking bracts surround each group of three tiny flowers. Answer : (c)
Q.50
Which one of the following is Millet ... ... [ JKCMEE 1994]
0%
a) Triticum
0%
b) Sorghum
0%
c) Oryza
0%
d) Phaseolus
Explanation
Sorghum, (Sorghum bicolor), also called great millet, Indian millet, milo, durra, orshallu, cereal grain plant of the grass family (Poaceae) and its edible starchy seeds. In India sorghum is known as jowar Answer : (b)
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