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Neet Biology Morphology Of Flowering Plants Mcq
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Q.1
Seeds are beset with tiger's claw in ... .. [ CPMT 1992]
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a) Martynia
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b) Xanthium
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c) Spear Grass
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d) Puncture Vine
Explanation
Answer : (a)
Q.2
Leaves develop from... ... [ AFMC 2003]
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a) Nodes
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b) Internodes
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c) Epidermis
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d) Endodermis
Explanation
Answer : (a)
Q.3
Birds disseminate seeds by ... ... [ AMU 2003]
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a) Eating fruit and passing the seeds unharmed through excreta at places
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b) Their feathers
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c) Carrying seeds in their beaks
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d) Eating fruits and digesting fruit content in their elementary canal
Explanation
Answer : (a)
Q.4
Wheat/Rice grain is a fruit of the type ... ..[ AFMC 2009]
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a) Cypseal
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b) Samara
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c) Achene
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d) Caryopsis
Explanation
Answer : (d)
Q.5
Winged seeds are ... ... [ CPMT 1996]
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a) Rough and sticky
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b) Smooth and sticky
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c) Dry and spinning
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d) None of the above
Explanation
Answer : (c)
Q.6
Persistent nucellus in the seed is known as... [NEET 2019]
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a) Chalaza
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b) Perisperm
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c) Hilum
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d) Tegmen
Explanation
Persistent Nucellus is called Perisperm Perisperm is the persistent nucellus in seed of Black pepper and beet. Nucellus is the central tissue of ovules that contains the embryo sac. In some seeds like black pepper, it presists after the double fertilization. Answer : (a)
Q.7
Pneumatophores occur in [ NEET 2018]
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a) Carnivorous plants
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b) Free-floating hydrophytes
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c) Halophytes
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d) Submerged hydrophytes
Explanation
Answer : (c)
Q.8
The body of the ovule is fused within the funicle at (1) (2) (3) (4) Answer (3)
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a) Nucellus
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b) Chalaza
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c) Hilum
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d) Micropyle
Explanation
Answer : (c)
Q.9
The edible part of Apple/Pear is ... .. [ BHU 1996]
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a) Cotyledons
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b) Thalamus/Receptacle
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c) Mesocarp
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d) Endocarp
Explanation
Apple and pears is a pome. It is a false fruit as it surrounded by fleshy and edible thalamus. Answer : (b)
Q.10
A flower without nonessential whorls is ... .... [ kerala 2001]
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a) Monoecious
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b) Dioecious
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c) Calyx
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d) Achlamydeous
Explanation
The stamens and pistils usually occur in thesame flower. These are essential whorls. The calyx and the corolla are referred to as the non-essential whorls. When non-essential are absent, the flower is called achlamydeous. For example, flowers of willow. Answer : (d)
Q.11
Which of the following description of the flower matches the floral diagram ... ..[ KCET 2012]
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a) Heterochlamydeous, gamopetalous and isexual
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b) Homochlamydeous, gamopetalous, tetramerous and unisexual
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c) Homochlamydeous, polypetalous, pentamerous and bisexual
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d) Homochlamydeous, gamopetalous, tetramerous and bisexual
Explanation
Answer : (a)
Q.12
The process of growth is maximum during [NEET 2020]
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a) Senescence
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b) Dormancy
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c) Log phase
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d) Lag phase
Explanation
Maximum growth takes place during exponential or log phase. Answer : (c)
Q.13
Name the family having (9)+1 arrangement of stamens .... ...... [ AIIMS 2001]
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a) Solanaceae
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b) Asteraceae
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c) Liliaceae
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d) Fabaceae
Explanation
Answer : (d)
Q.14
There is stem modification in Ruscus. It is ... ... [ Har PMT 2003 ]
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a) Cladode
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b) Phylloclade
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c) Thorn
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d) Corm
Explanation
Answer : (a)
Q.15
The roots that originate from the base of the stem are ... .. [NEET 2020]
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a) Prop roots
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b) Lateral roots
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c) Fibrous roots
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d) Primary roots
Explanation
A fibrous root system is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. A fibrous root system is universal in monocotyledonous plants and ferns. Answer : (c)
Q.16
The ovary is half inferior in : [NEET 2020]
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a) Sunflower
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b) Plum
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c) Brinjal
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d) Mustard
Explanation
In the censer mechanism, the seeds are discharged through small openings on the fruits. The outlets are so narrow that only a few seeds can escape at a time. Thus, in Argemoru Mexicana and the poppies of Papaveraceae, after the apertures are opened by porous dehiscence, as the capsule swings in the air, the minute seeds are dispersed through the pores. Answer : (c)
Q.17
Sweet Potato is homologous to .. .. [ CBSE 2011]
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a) Colocasia
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b) Potato
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c) Turnip
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d) Ginger
Explanation
Sweet potato is homologous to turnip as both are having same origin i.e., both are root but modified for different functions. Sweet potato is a modified root for storage and vegetative propagation while turnip is modified for storage only Answer : (c)
Q.18
Cauliflory is ... ...[ CPMT 1995]
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a) Production of new plants from cauline buds
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b) Formation of flowers from old stem
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c) Development of flowers on young branches
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d) Clustering of flowers
Explanation
Cauliflory is a botanical term referring to plants that flower and fruit from their main stems or woody trunks rather than from new growth and shoots. Answer : (b)
Q.19
Seed of Caster is ... ..[ AMU 2005] Explanation is provided please click on
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a) Non-endospermic exalbuminous
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b) Endospermic albuminous
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c) Endospermic exalbuminous
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d) Non-endospermic albuminous
Explanation
Endospermic seeds are those which seed enosperm is located outside of cotyledons and cotyledons are tiny or leafy, ex: castor bean seeds Castor retains a part of endosperm as it is not completely used up during embryo development, hence it is known as Albuminous seed. Groundnut do not have residual endosperm as it is completely consumed during embryo development, hence it is known as Exalbuminous seed. Answer : (b)
Q.20
Prop or pillar roots are ... ..[ Manipur 2006]
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a) Fasciculated roots
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b) Tap roots
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c) Adventitious roots
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d) Secondary roots
Explanation
Prop roots are adventitious in nature, and are also called as Pillar roots. Definition of adventitious root: a root that arises from any point other than the radicle or the root axis (as the prop roots of corn arising from the lower stem) Answer : (c)
Q.21
A fruit developed from a condensed inflorescence is ... .. [ AFMC 1999 ]
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a) Simple fruit
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b) Aggregate fruit
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c) Composite fruit
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d) Etaerio
Explanation
A fruit, which develops from a condensed inflorescence, is called as composite fruit. A composite fruit is a type of fruit that develops from an inflorescence rather than from a single flower while custard apple fruit develops from a polycarpellary and apocarpous ovary. Answer : (c)
Q.22
Opening of flowers in a cymose inflorescence is .. ... [ AMU 1999]
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a) Centrifugal
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b) Centripetal
0%
c) Basipetal
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d) Acropetal
Explanation
In cymose inflorescence the-main axis is terminated by development of a flower. Lateral axes, one or more bearing younger flowers, originate from below the terminal one. The arrangement is basipetal, i.e. oldest one at the tip and the younger ones away from it. Thus the mode of opening of flowers here is centrifugal (from centre towards circumference). Answer : (a)
Q.23
Plants with this floral diagram are ... [ AIIMS 2012]
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a) Dicots
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b) Legumes
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c) Medicinal and perennial
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d) With pinnately compound leave
Explanation
Answer : (c)
Q.24
Fusiform roots are found in ... ... [ BHU 1996]
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a) Solanum tuberosum
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b) Colocasia
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c) Daucos carota
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d) Raphanus sativus
Explanation
Fusiform structure means spindle-shaped structure. Fusiform roots are found in Raphanus sativus, because the food product by the plant is stored in the root turning it into a spindle-shaped structure. Answer : (d)
Q.25
Which one is not a pseudocarp? ... ... [ AMU 1997]
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a) Tomato
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b) Guava
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c) Apple
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d) Banana
Explanation
False fruit is a fruit such as the apple, strawberry, or pineapple, that contains, in addition to a mature ovary and seeds, a significant amount of other tissue Answer : (c)
Q.26
Epicalyx occurs in ... ..[ MHT CET 2007]
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a) Cycas
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b) Jowar
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c) Nephrolepis
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d) China Rose
Explanation
Bracteoles are small scale like structure present on the pedicel Epicalyx- Whorl of bracteoles present below the calyx or outside the calyx constitute epicalyx, e.g., Hibiscus rosasinensis (China rose) Answer : (d)
Q.27
Study the statements and choose the right option ... [ kerala 2011] a) Buds are present in the axils of leaflets of a compound leaf b) Pulvinus leaf base is present in some leguminous plants c) In Alstonia the petioles expand, become green and synthesis food d) Opposite phyllotaxy is seen in Guava
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a) b and d
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b) a and c
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c) a and d
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d) b, c and d
Explanation
a) Buds are present in the axils of petiole of simple and compound leaves. However, buds are absent in the axils of leaflets of the compound leaf. b) Pulvinus is the swollen structure present at the leaf base. It is seen in leguminous plants. It helps in protection. c) In Alstonia, the petioles are not modified into green phyllodes. Phyllotaxy is the arrangement of leaves on the stem. There are three types of phyllotaxy, namely opposite, alternate and whorled. d) Opposite phyllotaxy is seen in guava. Thus, the correct answer is 'b and d.' Answer : (a)
Q.28
Match the following ... [ EAMCET 2005]
a) Gall flowers
i) Spikelet
b) Involucre
ii) Hypanthodium
c) Spathe
iii) Cyathium
d) Lemma
iv) Umbel
- - - -
v) Spadix
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a) a - ii, b - iv, c - v, d - iii
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b) a - ii, b - iii, c - v, d - i
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c) a - iii, b - iv, c - ii, d - v
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d) a - iii, b - iv, c - ii, d - i
Explanation
Sterile, neuter or gall flowers occur in between the two groups. The inflorescence is formed by the condensation of three types of flower- bearing axes (cymose groups). Hypanthodium is found in the genus Ficus of the family Moraceae, e.g., Peepal (Ficus religiosa), Banyan (Ficus bengalensis), and Fig (Ficus carica).a - ii A cyathium (plural: cyathia) is one of the specialised pseudanthia ("false flowers") forming the inflorescence of plants in the genus Euphorbia (Euphorbiaceae). A cyathium consists of: Five (rarely four) bracteoles. These are small, united bracts, which form a cup-like involucre. b- iii The spadix emerges from a vase-shaped or funnel-like modified leaf or spathe which is often brightly colored. The spadix of some arums emits a putrid odor that attracts carrion flies for pollination. c - v Lemma is a phytomorphological term referring to a part of the spikelet.d - 1 Answer : (b)
Q.29
Geocarpic fruits are formed in ... ..[ AFMC 2007]
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b) Onion
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a) Watermelon
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c) Carrot
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d) Groundnut
Explanation
Geocarpy refers to the ripening of fruits underground, In the case of ground nut, the young fruits are pushed into the soil as a result of post-fertilisation curvature of the stalk. Answer : (d)
Q.30
A fibrous root system is better adapted than tap root system for ... ... [ BHU 1993]
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a) Storage of food
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b) Anchorage of plant to soil
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c) Absorption of water and minerals
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d) Transport of water and organic food
Explanation
Fibrous roots form a network of roots near the surface of the soil where they absorb minerals and water. They also hold several soil particles together and thus help to prevent or reduce soil erosion. Taproots form a very strong anchor in the ground since they can grow very deep, Answer : (c)
Q.31
Which one is endospermous ... ...[ Tamil nadu 2001]
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a) Cajanus cajan
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b) Helianthus annuus
0%
c) Ricinus communis
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d) Ravenala madagascariensis
Explanation
Endospermic seeds are those which seed enosperm is located outside of cotyledons and cotyledons are tiny or leafy Monocotyledon endospermic seed - Zea mays, Barley, Rice, Wheat. Dicotyledonous endospermic seed. - Castor(Ricinus communis), Cotton, Coffee. pigeon pea (Cajanus cajan) sunflower (Helianthus annuus) Traveller's tree (Ravenala madagascariensis) Answer : (c)
Q.32
Root cap is absent in ... .. [ BHU 2000 ]
0%
a) Hydrophytes
0%
b) Lithophytes
0%
c) Xerophytes
0%
d) Mesophytes
Explanation
Root cap is generally absent in aquatic plants, that is hydrophytes. Root cap protects the growing tip of roots from the soil. In hydrophytes, roots are either absent or poorly developed. Note that Tomato is a true berry which develops from a superior ovary with just ovary involved information of the fruit. It is thus a eucarp (true fruit ) Answer : (a)
Q.33
Arrangement of ovules on the placenta developed from central axis of ovary is ... ... [ JKCMEE 2005]
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a) Parietal placentation
0%
b) Free central
0%
c) Marginal placentation
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d) Axile placentation
Explanation
In free central placentation, the ovules develop on the central axis while the septa are absent. Answer : (b)
Q.34
Aggregate fruit occurs in ... ..[ EAMCET 1995]
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a) Artocarpus
0%
b) Annona squamosa
0%
c) Ananas
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d) Both b and c
Explanation
Aggregate fruits are special because they form from multiple ovaries in the same flower. The result is tiny fruitlets fused together around a receptacle to form an entire fruit. Fragaria (Strawberry), Ailanthus, Calotropis (Ak), Annona squamosa (Custard apple), Rubus sp. (Blackberry) are examples of aggregate fruit. Answer : (b)
Q.35
National flower of India is ... .. [ CPMT 1996]
0%
a) Lotus
0%
b) Rosa
0%
c) Carica
0%
d) Colocasia
Explanation
Answer : (a)
Q.36
Testa of seed develops from .. ...[ JKCMEE 2011]
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a) Ovary wall
0%
b) Hilum
0%
c) Outer integument
0%
d) Funicle
Explanation
Bitegmic seeds form a testa from the outer integument and a tegmen from the inner integument while unitegmic seeds have only one integument. Answer : (c)
Q.37
Pneumatophores are useful in .. .. [ BHU 1990]
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a) Respiration
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b) Transpiration
0%
c) Guttation
0%
d) Protein synthesis
Explanation
Pneumatophores are specialized root structures that grow out from the water surface and facilitate the aeration necessary for root respiration in hydrophytic trees such as many mangrove species Answer : (a)
Q.38
Ginger is a stem which can be differentiated from root because it ... ... [ MPPMT 2007]
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a) Grows parallel to ground
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b) Stores food
0%
c) Lacks chlorophyll
0%
d) Has nodes and internodes
Explanation
Rhizome is a thickened, underground, dorsiventral stem that grows horizontally at a particular depth within the soil. Ginger is a rhizome. It can be distinguished from the modified root by the presence of nodes, internodes, terminal buds, auxillary buds and scale leaves. Answer : (d)
Q.39
Replum occurs in the ovary of ... ... [ RPMT 2011]
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a) Malvaceae
0%
b) Brassicaceae
0%
c) Asteraceae
0%
d) Liliaceae
Explanation
Replum is present in the ovary of flower of mustard. A false septun called replum develops between the two parietal placentae in mustard and other members of family Brassicaceae. The ovary becomes bilocular. Answer : (b)
Q.40
Select the correct match ... ... [ Kerala 2011]
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a) Colchicum autumnale - Solanaceae
0%
b) Gloriosa - Fabaceae
0%
c) Petunia - Solanaceae
0%
d) Trifolium - Liliaceae
Explanation
Answer : (c)
Q.41
Thalamus in hypogynous ovary is ... ..[ Odisha 2011]
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a) Convex
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b) Concave
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c) Flat
0%
d) Partly cup-shaped
Explanation
Thalamus or the receptacle is the end of the pedicel or peduncle at which the floral organs are borne. The shape of the thalamus varies with respect to the position of the ovary. In hypogynous flowers, the ovary is superior and the thalamus is convex or swollen or dome-shaped. A. Convex thalamus is seen in hypogynous flowers. B. Concave thalamus is seen in perigynous flowers. C. Flat and cup-shaped thalamus is seen in epigynous flowers. Answer : (a)
Q.42
In Tamarind (Imli) the pinnate leaf is ... ... [ Bih PMT 1994]
0%
a) Tripinnate
0%
b) Bipinnate
0%
c) Paripinnate
0%
d) Imparipinnate
Explanation
When leaflets are directly associated with the rachis, it is unipinnate type. It is of two types- (a)Paripinnate: Rachis terminated by even number of leaflets. e.g., tamarind, ashoka (b) Imparipinnate: Rachis terminated by odd number of leaflets. e.g. rose, clitoria Tamaind is paripinnate Answer : (c)
Q.43
Aestivation in which members of a whorl lie close but do not overlap is ... ...[ AMU 1999 ]
0%
a) Vexillary
0%
b) Valvate
0%
c) Imbricate
0%
d) Twisted
Explanation
Mode of arrangement of sepals or petals with respect to one another in the floral bud is termed as aestivation. (a) Valvate aestivation: sepals or petals just touch without any overlapping, e.g., Brassica (b) Twisted aestivation: It is a regular overlap pattern. (c) Vexillary aestivation : When the standard petal is large and overlaps the two wing petals which in turn overlap the keel petals. e.g., pea, bean. (d) Imbricate aestivation: Where one is exterior, one is interior and rest three are having one margin exterior and other interior. There is irregular overlapping. Answer : (b)
Q.44
Botanical name of Cauliflower is .. .. [ CBSE 1991]
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a) Brassica oleracea Var, capitata
0%
b) Brassica campestris
0%
c) Brassica oleracea var, botrytis
0%
d) Brassica oleracea var, gemmifera
Explanation
Cauliflower is one of several vegetables in the species Brassica oleracea in the genus Brassica, which is in the family Brassicaceae. Botanical name is Brassica oleracea var. botrytis Answer : (c)
Q.45
Petiole is modified into green leafy structure called ... .. [ MPPMT 1998]
0%
a) Phyllode
0%
b) Phylloclade
0%
c) Cladode
0%
d) Foliaceous petiole
Explanation
Petiole is the stalk of the leaf, that connects the lamina with the stem and is generally cylindrical, being terete or grooved. Petiole performs the function of leaf by modifying into leaf like structure called phyllode. Answer : (a)
Q.46
One seeded winged fruit is ... ..[ Har PMT 2007]
0%
a) Cypsela
0%
b) Samara
0%
c) Achene
0%
d) Nut
Explanation
Samara: It is an achene type of dry single-seeded indehiscent fruit having papery wing-like structures surrounding it. It helps in seed dispersal. A cypsela is a dry indehiscent fruit having hair like projections called pappus which help in its dispersal by air. A nut is an indehiscent fruit with hard, woody or leathery pericarp enclosing the seed. Athens is a place and not a fruit. Answer : (b)
Q.47
Among the following which compound can induce seed dormancy ... .. [ Pb PMT1998]
0%
a) Gibberellins
0%
b) Caffeine
0%
c) ABA
0%
d) Potassium nitrate
Explanation
abscisic acid (ABA) is the only hormone known to induce and maintain seed dormancy Gibberellins (GAs) break seed dormancy and promote germination. Answer : (c)
Q.48
In the leaves, veins are useful for ... .... [ AMU 2011]
0%
a) Transport of water and minerals
0%
b) Mechanical support
0%
c) Transport of organic nutrients
0%
d) All the above
Explanation
Functions of veins are as follows: 1. Conduction of water through xylem 2. Providing channels for translocation of organic nutrients. 3. Conduction of minerals. 4. By their large number, the veins and veinlets provide skeletal support to the lamina so that it can remain stretched for its optimum functioning. 5. Veins and veinlets reduce the effect of wilting. Answer : (d)
Q.49
Tegmen develops from ... .. [ CBSE 1990]
0%
a) Funiculus
0%
b) Chalaza
0%
c) Inner integument
0%
d) Outer integument
Explanation
Outer protective covering of seed is called seed coat which develops from integuments of ovules. The seeds developing from bitegmic ovule have two layers. The outer layer is called testa and inner layer or tegmen develops from inner integuments. Answer : (c)
Q.50
Union of stamens with carpels form a complex called ... ...[ CMC 2003]
0%
a) Gynostegium
0%
b) Syngenesious
0%
c) Gynandrium
0%
d) Synandrous
Explanation
The stamens and the style and stigma of carpel fused to form a unit called gynostegium. Syngnesious is the condition of androecium when the anthers are fused but the filaments are free. In synandrous condition, the stamens are united along their length. Answer : (a)
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