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Neet Biology Morphology Of Flowering Plants Mcq
Quiz 5
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Q.1
Which is not a rhizome? [ Pb PMT 1997]
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a) Colocasia
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b) Lotus
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c) Ginger
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d) Turmeric
Explanation
Colocasia is corm Corm is cylindrical underground stem. where as rizome is flattened underground stem. Corm grows vertically while rizome is grows horizontantly, In corm adventitious roots arise from the lower nodes of the corm while rizome adventitious roots arise profusely from nodes Answer : (a)
Q.2
Flowers are zygomorphic in ... ..[ RPMT 2011]
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a) Radish
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b) Lily
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c) Mustard
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d) Gulmohar
Explanation
Zygomorphic flower : having floral parts unequal in size or form so that the flower is capable of division into essentially symmetrical halves by only one longitudinal plane passing through the axis. Answer : (d)
Q.3
Placentation of Brassicaceae is ... ... [ AFMC 1992]
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a) Axile
0%
b) Basal
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c) Marginal
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d) Parietal
Explanation
Brassicaceae or Cruciferae is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Parietal placentation: Here ovary is one-chambered but it becomes two- chambered due to the formation of the false septum. The ovules develop on the inner wall of the ovary or on peripheral part. E.g. - mustard and Argemone. Answer : (d)
Q.4
Parasitic plants obtain nourishment through ... .. [ CPMT 1995]
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a) Root
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b) Haustoria
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c) Thorns
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d) Pores
Explanation
Haustorium is a rootlike structure that grows into or around another structure to absorb water or nutrients. Structure penetrates the host's tissue and draws nutrients from it. Answer : (b)
Q.5
Which is not correctly matched? ... ..[ Pb.P.M.Y.]
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a) Fig - Sorosis
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b) Sunflower - Cypsela
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c) Mango - Drupe
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d) Tomato - Berry
Explanation
Fig is a synconus fruit. Sorosis is a fleshy multiple fruit, e.g. a pineapple or mulberry, derived from the ovaries of several flowers. Match (a) is not correct Type of fruit found in sunflower is Cypsela. The mango (Mangifera indica) is a drupe The tomato is the edible berry Answer : (a)
Q.6
The whorl in flower that attracts insects and protects the essential parts is ... ..[ KCET 2012]
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a) Androecium
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b) Corolla
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c) Gynoecium
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d) Calyx
Explanation
The main function of the corolla is to assist in the reproductive process of the plant. The petals of the corolla are designed to aid in pollination, and therefore, increase the chance of successful reproduction of the flower. Answer : (b)
Q.7
Pitcher Plant is ... .. [ KCET 1998]
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a) Herbivorous
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b) Carnivorous
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c) Saprotroph
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d) All the above
Explanation
Pitcher plants (or pitfall traps) are carnivorous plants whose prey-trapping mechanism features a deep cavity filled with liquid known as a pitfall trap. Answer : (b)
Q.8
Flower of Hibiscus is .. ..[ AIIMS 1999]
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a) Actinomorphic and epigynous
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b) Actinomorphic and hypogynous
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c) Zygomorphic and hypogynous
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d) Zygomorphic and epigynous
Explanation
Hibiscus rosa-sinensis belongs to the family Malvaceae. It is characterised by the complete, actinomorphic and hypogynous flower. Actinomorphic is characterized by radial symmetry, such as a starfish or the flower of a daisy. Hypogynous of a plant or flower having the stamens and other floral parts situated below the carpels (or gynoecium). Zygomorphic of a flower having only one plane of symmetry, as in a pea or snapdragon; bilaterally symmetrical. Epigynous of a plant or flower having the ovary enclosed in the receptacle, with the stamens and other floral parts situated above. Answer : (b)
Q.9
A group of simple fruit developed from a single flower is ... ..[ BHU 1996]
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a) Cypsela
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b) Caryopsis
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c) Etaerio
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d) Berry
Explanation
An aggregate fruit or etaerio is a fruit that develops from the merger of several ovaries that were separated in a single flower. In contrast, a simple fruit develops from one ovary. Answer : (c)
Q.10
Penetrating roots of Cuscuta are ... .... [ JIPMER 1999 ]
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a) Haustoria
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b) Stilt roots
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c) Climbing roots
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d) Assimilatory roots
Explanation
Haustorium (plural haustoria) is a rootlike structure that grows into or around another structure to absorb water or nutrients. Cuscuta uses haustoria to penetrate the vascular system of its host plant and remove sugars and nutrients from the host's phloem. Answer : (a)
Q.11
Replum is characteristic of family ... .... [ BHU 2008]
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a) Brassicaceae
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b) Asteraceae
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c) Liliaceae
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d) Solanaceae
Explanation
Replum is a thin false dissepiment separating the two valves of some fruits (as siliques and some legumes) from which the valves fall away at maturity. Brassicaceae or mustard family gynoecium is bicarpellary, syncarpous, ovary superior, unilocular, becomes bilocular due to the development of false septum called replum, parietal placentation, ovules many, style short, stigma simple or bifid. Answer : (a)
Q.12
Vegetative reproduction occurs by bulbil in ... ... [ BHU1990]
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a) Agave
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b) Colocasia
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c) Zingiber
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d) Vallisneria
Explanation
Agave macroacantha can sexually reproduce by seeds and propagate vegetatively by aerial bulbils and ground-level basal shoots and rhizomes. Answer : (a)
Q.13
Spine on the rind of Jack-Fruit represent ... ... [ Tamil Nadu 2001]
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a) Styles
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b) Carpels
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c) Stigmas
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d) Bracts
Explanation
In jack fruit, thick club-shaped peduncle has the flowers arranged on it. The fertile fruits have juicy, edible perianth lobes and the bracts form more or less juicy chaffs around them. The spines on the tough rind represent the stigmas of the carpels. Each seed is covered by a membranous testa. Answer : (c)
Q.14
Tendrillar stipules occur in ... ...[CPMT 1991]
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a) Dolichos lablab
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b) Acacia
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c) Smilax
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d) Mango
Explanation
Answer : (c)
Q.15
Pome is false fruit as ... ..[ CPMT 2000 ]
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a) Endocarp is cartilaginous
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b) Pericarp is inconspicuous
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c) Fruit is surrounded by fleshy thalamus
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d) All the above
Explanation
False fruit is a fruit formed from other parts of the plant as well as the ovary, especially the receptacle, Pome (e.g. an apple, pear, or quince) is a false fruit in which the edible part is thalamus where the true fruit remains embedded. Answer : (c)
Q.16
Leaves are changed into spines in xerophytic structure called ... ..[ CPMT 1996]
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a) Phyllode
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b) Cladode
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c) Phylloclade
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d) All the above
Explanation
A xerophyte is a species of plant that has adaptations to survive in an environment with little liquid water, such as a desert or an ice- or snow-covered region in the Alps or the Arctic. Phylloclade a flattened branch or stem-joint resembling and functioning as a leaf. A Phylloclade is a flattened stem of succulent plant. It is xerophytic plant so the leaves convert into spine and stem convert into fleshy phylloclade. Answer : (c)
Q.17
Botanical name of Gram is ... ..[ BHU 2008]
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a) Phaseolus aureus
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b) Phaseolus mungo
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c) Cicer arietinum
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d) Cajanus cajan
Explanation
Botanical name of Gram is Cicer arietinum Answer : (c)
Q.18
Thick roots hanging down from Banyan tree are ... ... [ BHU 1995]
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a) Stilt roots
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b) Prop roots
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c) Pneumatophores
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d) Buttress roots
Explanation
Answer : (b)
Q.19
In sweet Pea, the tendrils are modified ... .. [ JIPMER 2000 ]
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a) Stem branches
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b) Leaflets
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c) Leaves
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d) Stipules
Explanation
In sweet Pea, the tendrils are modified Leaflets In sweet Pea, the terminal leaflet of the compound leaf modifies into a tendril while in some plants, several leaflets of the compound leaf convert into tendrils. In some other plants, leaf petiole modifies into a tendril for the clinging purpose. Answer : (b)
Q.20
A root swollen in the form of closly arranged ring is called ... ...[ CET Chd. 2011]
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a) Annulated
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b) Moniliform
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c) Fasciculated
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d) Beaded
Explanation
Answer : (a)
Q.21
In a multilocular ovary, ovules are borne on the entire inner surface. Placentation is ... ...[ CPMT 1991]
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a) Superficial
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b) Marginal
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c) Parietal
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d) Axile
Explanation
Superficial or Laminar: Here, the ovules develop over the entire inner surface of the carpels. It occurs in multicarpellary ovary, e.g., Nymphaea. Placentation in a plant are of types are: 1. Marginal 2. Parietal 3. Axile 4. Free-central 5. Superficial or Laminar 6. Basal. Answer : (a)
Q.22
Fruit of Peanut ( Arachis hypogea) is ... ..[ Pb PMT 1998]
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a) Pod
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b) Achene
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c) Caryopsis
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d) Drupe
Explanation
A peanut plant (Arachis hypogaea) that has been pulled out of the ground to show the subterranean, seed-bearing, dry fruit called a pod. Answer : (a)
Q.23
Monocot characteristics are ... ... [ RPMT 1998]
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a) Fibrous root system, parallel-veined leaves, trimerous flowers and two cotyledons
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b) Fibrous root system, parallel - veined leaves, trimerous flowers and cotyledon
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c) Fibrous root system, reticulate veined leaves, trimerous flowers an one cotyledon
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d) Tap root system, parallel venation, trimerous flowers and one cotyledon
Explanation
Monocot plants have characteristic features like fibrous root system because the radicle is short-lived, thus replaced by adventitious roots. They also have parallel-veined leaves and trimerous flowers. Answer : (b)
Q.24
Bicarpellary gynoecium with oblique ovary occurs in ... .. [ CBSE 2001]
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a) Banana
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b) Brinjal
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c) Pisum
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d) Mustard
Explanation
Bicarpellary gynoecium (of an ovary) means having two carpels. Oblique ovary means the ovary is placed obliquely in a diagonal plane. It is present in the family Solanaceae. In this, the gynoecium is bicarpellary and syncarpous Answer : (b)
Q.25
Carpels undergo torsion and are placed obliquely in ... .. [ EAMCET 1994]
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a) Brassicaceae
0%
b) Solanaceae
0%
c) Asteraceae
0%
d) Liliaceae
Explanation
In Solanaceae, the carpels undergo torsion (twisting) and they are placed obliquely because the posterior carpels turn to the right and anterior carpels are turned to the left. Answer : (b)
Q.26
Ginger multiplies vegetatively by ... ...[ CPMT 1991]
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a) Bud
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b) Stem
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c) Tuber
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d) Rhizome
Explanation
Ginger is multiplied vegetatively by rhizome. It is an underground modification of stem. It develops root and shoots from the nodes. Answer : (d)
Q.27
Edible part of Coconut is ... . [ AIIMS 1990 ]
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a) Endocarp
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b) Mesocarp
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c) Aril
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d) Seed/Endosperm
Explanation
The coconut fruit is a drupe fruit, and its edible part is the endosperm. Answer : (d)
Q.28
A pair of insectivorous plants is ... .. [ CBSE 1999]
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a) Drosera and Rafflesia
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b) Nepenthes and Bladderwort
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c) Dionaea and Viscum
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d) Venus Fly Trap and Rafflesia
Explanation
Nepenthes is a genus of carnivorous plants, also known as tropical pitcher plants, or monkey cups, in the monotypic family Nepenthaceae. Bladderwort, (genus Utricularia), genus of carnivorous plants in the family Lentibulariaceae (order Lamiales). Answer : (b)
Q.29
Dichotomous branching occurs in ... ... [ AFMC 1998]
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a) Liverworts
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b) Funaria
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c) Dryopteris
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d) Pinus
Explanation
The division of the apical meristem into two independently functioning axes is defined as dichotomous branching. This type of branching typically occurs in non-vascular and non-seed vascular plants, whereas in seed plants it presents a primary growth form only in several taxa. Liverworts are dichotomously branched Answer : (a)
Q.30
During ripening, a fruit becomes soft and pulpy due to dissolution of ... ..[ AMU 1999 ]
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a) Second walls
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b) Primary walls
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c) Middle lamellae
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d) None of the above
Explanation
The middle lamella is the part of cell wall that is the outermost layer in between cells. It is rich in pectin that cements the primary cell walls of adjacent cells together. It renders stability, and form plasmodesmata between cells. The middle lamella contains calcium and magnesium pectates. Loosening of the primary wall and/or middle lamella causes the attractive textural changes that characterize ripening. Answer : (c)
Q.31
Potato is multiplied vegetatively with the help of ... ... [ BHU 1991]
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a) Corm
0%
b) Rhizome
0%
c) Tuber
0%
d) Phyllode
Explanation
Answer : (c)
Q.32
Flowers having only one set of essential organs are ... ... [ kerala 2004]
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a) Monoecious
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b) Dioecious
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c) Bisexual
0%
d) Unisexual
Explanation
A flower in which only one set of essential organ is present is said to be unisexual Answer : (d)
Q.33
Edible part in sorosis fruit is ... ... [ AMU 2005]
0%
a) Perianth
0%
b) Perianth + sepals
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c) Placenta
0%
d) Perianth + placenta
Explanation
Sorosis is the composite fruit that develops from spike and catkin, eg, in pineapple edible part develops from perianth and peduncle. Answer : (d)
Q.34
In cyathium, the ratio between female to male flowers is ... ...[ Odisha 2010]
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a) One : One
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b) One : Many
0%
c) Many : One
0%
d) Many : Many
Explanation
The paired petal-like bracts of Euphorbia section Goniostema are called cyathophylls. here female to male flower ratio is one : many Answer : (b)
Q.35
Trimerous flower, superior ovary with axile placentation are characteristic of ... ...[ BHU 2008]
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a) Liliaceae
0%
b) Cucurbitaceae
0%
c) Solanaceae
0%
d) Asteraceae
Explanation
Liliaceae herbs rarely shrubs, stem underground rhizome, corm or bulb; leaves alternate, flowers actinomorphic, trimerous, hypogynous, perianth 6 in two whorls of 3 each, free or fused; stamen 3+3, epiphyllous, antiphyllous; gynoecium tricarpellary, syncarpous, ovary superior, axile placentation, two to many ovules per loculus; fruit capsule or berry; seed endospermic. Answer : (a)
Q.36
Placentation in Tomato and Lemon is ... ..[ CBSE 2012]
0%
a) Parietal
0%
b) Marginal
0%
c) Free central
0%
d) Axile
Explanation
Axile type of placentation is seen in lemon and tomato. In this type of placentation, the ovary is partitioned into two or more chambers by septa. Answer : (d)
Q.37
Occurrence of more than one type of leaves on the same plant is ... ... [ BHU 2007]
0%
a) Heterophylly
0%
b) Phyllotaxy
0%
c) Venation
0%
d) Vernation
Explanation
Heterophylly is the presence of differently shaped leaves on the same shoot or on different shoots of the same plant. Answer : (a)
Q.38
Outer covering of epiphytic root is ... ....[Odisha 2005]
0%
a) Osmophore
0%
b) Rhizophore
0%
c) Pneumatophore
0%
d) Velamen
Explanation
Velamen an outer layer of empty cells in the aerial roots of epiphytic orchids and aroids. Epiphytic roots are the roots that grow on the surface of a plant and derives its moisture and nutrients from the air,rain,water or from debris accumulating around it. The velamen surrounds the orchid root and acts like a sponge, accumulating water, which is transported via special passage cells to the pipeline (stele) inside the root and from there nutrients go to pseudobulbs and leaves. Answer : (d)
Q.39
The portion of embryo axis above cotyledons is ... ..[ JKCET 2012]
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a) Epicotyl
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b) Hypocotyl
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c) Radicle
0%
d) Coleoptile
Explanation
The part of the embryonic axis that projects above the cotyledons is known as the epicotyl. Answer : (a)
Q.40
Clinging root occur in ... ... [ CBSE 1999]
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a) Trapa
0%
b) Orchid
0%
c) Screwpine
0%
d) Podostemon
Explanation
Orchids have clinging roots that are modified adventitious roots meant for providing mechanical support. Answer : (b)
Q.41
Which among the following is monocarpic? ... .. [ RPMT 1998]
0%
a) Coconut
0%
b) Apple
0%
c) Bamboo/Agave
0%
d) Mango
Explanation
Monocarpic plants are those that flower, set seeds and then die. Bamboo plant will flower, go to seed, and then die. Answer : (c)
Q.42
National tree of India is ... .. [ JIPMER 2002]
0%
a) Mangifera indica
0%
b) Azadirachta indica
0%
c) Ficus benghalensis
0%
d) Ficus religiosa
Explanation
Indian fig tree, also termed as Banyan tree is the National tree of India. Ficus Bengalensis is the scientific name of national tree of India. Answer : (c)
Q.43
In floral formula, (K) denotes ... ... [ WB 2008]
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a) Polysepalous
0%
b) Gamosepalous
0%
c) Polypetalous
0%
d) Gamopetalous
Explanation
In floral formula, (K) denotes polysepalous condition. Polysepalous, having the sepals separate from each other. Answer : (b)
Q.44
Aerial absorptive roots occur in ... .. [ Odisha 1996]
0%
a) Epiphytes
0%
b) Mesophytes
0%
c) Hydrophytes
0%
d) Xerophytes
Explanation
Epiphytes are plants that grow attached to other plants. Epiphytes and climbing plants have aerial roots that anchor the plant to the bark, branch or another surface on which it grows. Aerial roots of some epiphytes are specialized not only for anchorage but some have photosynthetic roots (some epiphytic orchids), some absorb water. Answer : (a)
Q.45
Root that hold horizontal branches of Banyan tree in the air are .... [ Bih PMT 1991]
0%
a) Thumb root
0%
b) Prop roots
0%
c) Stilt roots
0%
d) All the above
Explanation
Answer : (b)
Q.46
Milky water in green Coconut is ... ... [ JIPMER 2000 ]
0%
a) Liquid female gametophyte
0%
b) Liquid endosperm
0%
c) Liquid nucellus
0%
d) Liquid chalaza
Explanation
In Cocos nucifera (coconut) milky endosperm is found in which many nuclei, vitamins and growth hormone e.g., cytokinins, auxin and induced cytokinin is found. Answer : (b)
Q.47
Lateral roots originate from ... .. [ CPMT 1994]
0%
a) Cortex
0%
b) Epidermis
0%
c) Endodermis
0%
d) Pericycle
Explanation
Lateral roots are produced when cells in the pericycle, the layer of cells surrounding the central vascular cylinder, begin to divide, form additional cell layers that push through the outer cell layers of the primary root, and ultimately organize a second root meristem. Answer : (d)
Q.48
Scientific name of Sunflower is ... ... [ W.B. 2009]
0%
a) Brassica campestris
0%
b) Pisum sativum
0%
c) Helianthus annuus
0%
d) Gossypium herbaceum
Explanation
The scientific name of the sunflower is “Helianthus annuus”. Answer : (c)
Q.49
Placentation of Pea flower is ... ..[ AFMC 2008]
0%
a) Parietal
0%
b) Marginal
0%
c) Axile
0%
d) Superficial
Explanation
In sweetpea (Pisum sativum), the placentation is marginal, in which the placenta develops along the junction of two carpels, in a unilocular ovary Answer : (b)
Q.50
An obligate stem parasite is ... .. [ BHU 1999]
0%
a) Rafflesia
0%
b) Orobanche
0%
c) Cuscuta
0%
d) Monotropa
Explanation
Obligate parasite – a parasite that cannot complete its life cycle without a host. The genus Cuscuta (Convolvulaceae) is an obligate stem parasite Answer : (c)
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