NEET Biology Morphology of Flowering Plants MCQs Set 20

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Chapter-wise Objective Questions: Morphology Of Flowering Plants

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Multiple Choice Questions

Question 1: Primary root is the direct elongation of the
(a) Pedicel
(b) Radicle
(c) Plumule
(d) Stamen
Show Answer & Explanation

Answer: (b) Radicle

Explanation:
1. Primary root is the direct elongation of the radicle.

Question 2: The type of roots present in mustard plant is
(a) Fibrous roots
(b) Adventitious roots
(c) Tap roots
(d) Nodulated roots
Show Answer & Explanation

Answer: (c) Tap roots

Explanation:
1. The type of roots present in mustard plant is tap roots.

Question 3: Which of the following is not the lateral branches of the roots?
(a) Tertiary roots
(b) Secondary roots
(c) Primary root
(d) More than one option is correct
Show Answer & Explanation

Answer: (c) Primary root

Explanation:
1. Primary root is not the lateral branches of the roots.

Question 4: In wheat plant ________ root system is present.
(a) Nodulated
(b) Tap
(c) Fibrous
(d) Prop
Show Answer & Explanation

Answer: (c) Fibrous

Explanation:
1. In wheat plant fibrous root system is present.

Question 5: Which of the following is not the main function of the root system?
(a) Provide anchorage to the plant parts
(b) Synthesis of PGRs
(c) Absorption of water and minerals from soil
(d) Photosynthesis
Show Answer & Explanation

Answer: (d) Photosynthesis

Explanation:
1. Photosynthesis is not the main function of the root system.

Question 6: A root grows in length, which region of the root is responsible for this growth?
(a) Root cap
(b) Region of meristematic activity
(c) Region of elongation
(d) Region of maturation
Show Answer & Explanation

Answer: (c) Region of elongation

Explanation:
1. Region of elongation of the root is responsible for the root growth.

Question 7: Root hairs are present in/on
(a) Region of elongation
(b) Region of maturation
(c) Region of meristematic activity
(d) Root cap
Show Answer & Explanation

Answer: (b) Region of maturation

Explanation:
1. Root hairs are present in region of maturation.

Question 8: The region or part of root that increases the surface area for water absorption is
(a) Root cap
(b) Zone of elongation
(c) Meristematic zone
(d) Root hair
Show Answer & Explanation

Answer: (d) Root hair

Explanation:
1. Root hair increases the surface area of water absorption.

Question 9: Adventitious roots of ______ get swollen and store food.
(a) Carrot
(b) Turnip
(c) Radish
(d) Sweet potato
Show Answer & Explanation

Answer: (d) Sweet potato

Explanation:
1. Adventitious roots of sweet potato get swollen.

Question 10: Supporting roots coming out of the lower nodes of the sugarcane stem are called
(a) Prop roots
(b) Stilt roots
(c) Pneumatophores
(d) Fusiform roots
Show Answer & Explanation

Answer: (b) Stilt roots

Explanation:
1. Supporting roots coming out of the lower nodes of sugarcane stem is called stilt roots.

Question 11: In Rhizophora, roots are modified to form
(a) Tuberous roots
(b) Pneumatophores
(c) Stilt roots
(d) Storage roots
Show Answer & Explanation

Answer: (b) Pneumatophores

Explanation:
1. In Rhizophora, roots are modified to form pneumatophores.

Question 12: The hanging structures that support banyan tree are called
(a) Prop roots
(b) Stilt roots
(c) Pneumatophores
(d) Root hair
Show Answer & Explanation

Answer: (a) Prop roots

Explanation:
1. The hanging structures that support banyan tree are called prop roots.

Question 13: Stem develops from ______ of the embryo of a germinating seed.
(a) Radicle
(b) Plumule
(c) Pedicel
(d) Pneumatophore
Show Answer & Explanation

Answer: (b) Plumule

Explanation:
1. Stem develops from plumule of the embryo of a germinating seed.

Question 14: ______ are the regions of the stem that bear leaves.
(a) Internode
(b) Nodes
(c) Foliar bud
(d) Radical bud
Show Answer & Explanation

Answer: (b) Nodes

Explanation:
1. Nodes are the regions of the stem that bear leaves.

Question 15: Stems of potato, ginger and turmeric are modified to
(a) Respiration
(b) Perform photosynthesis
(c) Store food
(d) Provide support
Show Answer & Explanation

Answer: (c) Store food

Explanation:
1. Stems of potato, ginger and turmeric are modified to store food.

Question 16: In gourds, axillary buds develop spirally coiled structures called
(a) Thorns
(b) Tendril
(c) Offsets
(d) Suckers
Show Answer & Explanation

Answer: (b) Tendril

Explanation:
1. In gourds, axillary buds develop spirally coiled structures called tendril.

Question 17: ______ protect Bougainvillea from grazing animals.
(a) Tendrils
(b) Suckers
(c) Offsets
(d) Thorns
Show Answer & Explanation

Answer: (d) Thorns

Explanation:
1. Thorns protect Bougainvillea from grazing animals.

Question 18: Stems are modified into flattened structures, which carryout photosynthesis in
(a) Euphorbia
(b) Opuntia
(c) Bougainvillea
(d) Colocasia
Show Answer & Explanation

Answer: (b) Opuntia

Explanation:
1. In Opuntia, stems are modified into flattened structures which carryout photosynthesis.

Question 19: Leaves originate from ______ and are arranged in an ______ order.
(a) Root apical meristem, acropetal
(b) Floral meristem, basipetal
(c) Shoot apical meristem, acropetal
(d) Internodes, basipetal
Show Answer & Explanation

Answer: (c) Shoot apical meristem, acropetal

Explanation:
1. Leaves originate from shoot apical meristem and are arranged in an acropetal order.

Question 20: Which of the following is not a part of a leaf?
(a) Pedicel
(b) Leaf base
(c) Petiole
(d) Lamina
Show Answer & Explanation

Answer: (a) Pedicel

Explanation:
1. Pedicel is not a part of leaf.

Question 21: Leaf base may bear two lateral small leaf like structures called
(a) Lamina
(b) Pulvinus
(c) Stipules
(d) Sepals
Show Answer & Explanation

Answer: (c) Stipules

Explanation:
1. Leaf base may bear two lateral small stipules.

Question 22: Swollen leaf base found in leguminous plants is called
(a) Leaf blade
(b) Petiole
(c) Stipules
(d) Pulvinus
Show Answer & Explanation

Answer: (d) Pulvinus

Explanation:
1. Swollen leaf base found in leguminous plants is called pulvinus.

Question 23: Which one of the following plants shows alternate phyllotaxy?
(a) Sunflower
(b) Guava
(c) Nerium
(d) Calotropis
Show Answer & Explanation

Answer: (a) Sunflower

Explanation:
1. Sunflower shows alternate phyllotaxy.

Question 24: The petiole expand and become green to synthesize food in
(a) Solanum
(b) Pisum sativum
(c) Venus-fly trap
(d) Australian Acacia
Show Answer & Explanation

Answer: (d) Australian Acacia

Explanation:
1. Petiole expand and become green, structure called phyllode to synthesize food.

Question 25: Mark the incorrect statement
(a) Flower is a modified shoot
(b) In cymose inflorescence, the main axis terminates in a flower
(c) Flowers are borne on successive internodes on the stems and roots
(d) When a shoot tip transforms into a flower, the flower is always solitary
Show Answer & Explanation

Answer: (c) Flowers are borne on successive internodes on the stems and roots

Explanation:
1. Flowers are borne on successive nodes on the stems.

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