Morphology of Flowering Plants

Q1 FREE PREVIEW

PYQ

Which one of the following statements is correct?

aA sterile pistil is called a staminode

bThe seed in grasses is not endospermic

cMango is a parthenocarpic fruit

dA proteinaceous aleurone layer is present in maize grain

✓ Correct answer: d) A proteinaceous aleurone layer is present in maize grain

ExplanationA. A sterile pistil is called a staminode: This statement is incorrect.A sterile pistil (the female reproductive organ) is called a pistillode, while a sterile stamen (the male reproductive organ) is called a staminode.B. The seed in grasses is not endospermic: This statement is incorrect.Seeds in grasses (which are monocots) are typically endospermic (albuminous), meaning they retain the endosperm tissue for nourishment.C. Mango is a parthenocarpic fruit: This statement is incorrect.Parthenocarpic fruits develop without fertilization and are typically seedless (e.g., banana, grapes).Mangoes develop from a fertilized ovary and contain a seed.D. A proteinaceous aleurone layer is present in maize grain: This statement is correct.The maize grain (a type of fruit where the fruit wall is fused with the seed coat) has a distinct outer layer of the endosperm called the aleurone layer, which is rich in proteins and separates the embryo from the starchy endosperm.

Q2 FREE PREVIEW

PYQ

In some plants thalamus contributes to fruit formation. Such fruits are termed as: [Re-NEET 2020]

aParthenocarpic fruit

bFalse fruits

cAggregate fruits

dTrue fruits

✓ Correct answer: b) False fruits

ExplanationIn some plants, the thalamus contributes to fruit formation.Such fruits are termed false fruits because they develop from parts other than the ovary, usually from floral parts like the thalamus.An example of a false fruit is an apple, where the fleshy edible part is derived from the thalamus rather than the ovary.

Q3 FREE PREVIEW

PYQ

Identify the correct features of Mango and Coconut fruits. (i) In both fruit is a drupe (ii) Endocarp is edible in both (iii) Mesocarp in Coconut is fibrous, and in Mango it is fleshy (iv) In both, fruit develops from monocarpellary ovary Select the correct option from below:

a(i), (ii) and (iii) only

b(i) and (iv) only

c(i) and (ii) only

d(i), (iii) and (iv) only

✓ Correct answer: d) (i), (iii) and (iv) only

ExplanationIn mango and coconut, the fruit is known as a drupe.They develop from monocarpellary superior ovaries and are one seeded.In mango the pericarp is well differentiated into an outer thin epicarp, a middle fleshy edible mesocarp and an inner stony hard endocarp.In coconut which is also a drupe, the mesocarp is fibrous.The edible part of coconut is endosperm.

Q4 FREE PREVIEW

PYQ

The roots that originate from the base of the stem are [NEET 2020]

aFibrous roots

bPrimary roots

cProp roots

dLateral roots.

✓ Correct answer: a) Fibrous roots

ExplanationThe fibrous roots originate from the base of the stem.The primary root originates at the germination stage from the radicle of the seed in most of the dicots.The primary root of monocotyledonous plants is short-lived and is replaced by a vast number of roots.The fibrous root system of a plant, such as a wheat plant, is made up of these roots that grow from the base of the stem.

Q5

PYQ

In angiosperms, root hairs arise from which one of the following regions of the root?

[NEET 2026]

a

The root cap zone

b

The region of meristematic activity

c

The region of elongation

d

The region of maturation

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Q6

PYQ

How many of the following have pentamerous flowers

Onion, Asparagus, potato, capsicum, lupin, pea, lemon grass, mustard, bamboo

a

3

b

4

c

5

d

2

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Q7

PYQ

In racemose inflorescence, _________ .

[NEET 2026]

a

the main axis terminates in a flower

b

the growth is limited

c

flowers are borne in an acropetal succession

d

flowers are solitary

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Q8

PYQ

Match List I with List II.

List-I (Types of Stamens)	List-II (Example)
(A)	Monoadelphous	(I)	Citrus
(B)	Diadelphous	(II)	Pea
(C)	Polyadelphous	(III)	Lily
(D)	Epiphyllous	(IV)	China rose

Choose the correct answer from the options given below:

[NEET 2024]

a

A-III, B-I, C-IV, D-II

b

A-IV, B-II, C-I, D-III

c

A-IV, B-I, C-II, D-III

d

A-I, B-II, C-IV, D-III

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Q9

PYQ

Match List-I with List-II:

List-I	List-II
(A)	Vexillary aestivation	(I)	Brinjal
(B)	Epipetalous stamens	(II)	Peach
(C)	Opposite phyllotaxy	(III)	Pea
(D)	Perigynous flower	(IV)	Calotropis

Choose the correct answer from the options given below:

[Re-NEET 2024]

a

A-III, B-I, C-IV,D-II

b

A-III, B-IV, C-I, D-II

c

A-III, B-II, C-I, D-IV

d

A-II, B-I, C-IV, D-III

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Q10

PYQ

Which of the following examples show monocarpellary, unilocular ovary with many ovules?
A. Sesbania
B. Brinjal
C. Indigofera
D. Tobacco
E. Asparagus
Choose the correct answer from the options given below:

[Re-NEET 2024]

a

B and E only

b

C, D and E only

c

A, B and D only

d

A and C only

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Q11

PYQ

Match List I with List II :

List I	List II
A. Marginal	I. Mustard
B. Axile	II. Pea
C. Parietal	III. Marigold
D. Basal	IV. Lemon

Choose the correct answer from the options given below:

[NEET 2026]

a

A-I, B-III, C-II, D-IV

b

A-IV, B-II, C-I, D-III

c

A-II, B-IV, C-I, D-III

d

A-III, B-I, C-IV, D-II

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Q12

PYQ

Which of the following is an example of actinomorphic flower?

[NEET 2024]

a

Sesbania

b

Datura

c

Cassia

d

Pisum

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Q13

PYQ

Phyllotaxy is the pattern of arrangement of:

[Re-NEET 2026]

a

leaves

b

flowers

c

fruits

d

sepals

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Q14

PYQ

How many of the following have pentamerous flowers

Onion, Asparagus, potato, capsicum, lupin, pea, lemon grass, mustard, bamboo

a

3

b

4

c

5

d

2

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Q15

PYQ

Which of the following is an example of actinomorphic flower?

[NEET 2024]

a

Sesbania

b

Datura

c

Cassia

d

Pisum

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Q16

PYQ

Which of the following examples show monocarpellary, unilocular ovary with many ovules?
A. Sesbania
B. Brinjal
C. Indigofera
D. Tobacco
E. Asparagus
Choose the correct answer from the options given below:

[Re-NEET 2024]

a

B and E only

b

C, D and E only

c

A, B and D only

d

A and C only

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Q17

PYQ

In a pea flower, five petals are arranged in a specialized manner with one posterior, two lateral and two anterior. These are named as ................, ................ and ................ respectively.

a

Keel, Wings and Standard

b

Vexillum, Keel and Standard

c

Keel, Standard and Carina

d

Standard, Wings and Keel

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Q18

PYQ

Given below are two statements: One is labelled as Assertion A and the other is labeled as Reason R :
Assertion A: A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem.
Reason R: Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves.
In the light of the above statements, choose the correct answer from the options given below:

a

A is false but R is true.

b

Both A and R are true and R is the correct explanation of A.

c

Both A and R are true but R is NOT the correct explanation of A.

d

A is true but R is false.

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Q19

PYQ

The ovary is half inferior in

a

Mustard

b

Sunflower

c

Plum

d

Brinjal

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Q20

PYQ

Match List-I with List-II:

List-I	List-II
(A)	Vexillary aestivation	(I)	Brinjal
(B)	Epipetalous stamens	(II)	Peach
(C)	Opposite phyllotaxy	(III)	Pea
(D)	Perigynous flower	(IV)	Calotropis

Choose the correct answer from the options given below:

a

A-III, B-I, C-IV,D-II

b

A-III, B-IV, C-I, D-II

c

A-III, B-II, C-I, D-IV

d

A-II, B-I, C-IV, D-III

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Q21

PYQ

The roots that originate from the base of the stem are

a

Primary roots

b

Prop roots

c

Lateral roots

d

Fibrous roots

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Q22

PYQ

Axile placentation is observed in

a

China rose, Petunia and Lemon

b

Mustard, Cucumber and Primrose

c

China rose, Beans and Lupin

d

Tomato, Dianthus and Pea

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Q23

PYQ

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem.
Reason R : Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves.
In the light of the above statements, choose the correct answer from the options given below:

[NEET 2023]

a

Both A and R are true but R is NOT the correct explanation of A.

b

A is true but R is false.

c

A is false but R is true.

d

Both A and R are true and R is the correct explanation of A.

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Q24

PYQ

Diadelphous stamens are found in

[NEET 2021]

a

Citrus

b

Pea

c

China rose and Citrus

d

China rose

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Q25

PYQ

Identify the correct features of Mango and Coconut fruits.

(i) In both fruit is a drupe

(ii) Endocarp is edible in both

(iii) Mesocarp in Coconut is fibrous, and in Mango it is fleshy

(iv) In both, fruit develops from monocarpellary ovary

Select the correct option from below:

[Re-NEET 2020]

a

(i), (ii) and (iii) only

b

(i) and (iv) only

c

(i) and (ii) only

d

(i), (iii) and (iv) only

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Q26

PYQ

Correct position of floral parts over thalamus in mustard plant is

[Re-NEET 2020]

a

Margin of the thalamus grows upward, enclosing the ovary completely, and other parts arise below the ovary

b

Gynoecium is present in the centre and other parts cover it partially

c

Gynoecium is situated in the centre, and other parts of the flower are located at the rim of the thalamus, at the same level

d

Gynoecium occupies the highest position, while the other parts are situated below it

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Q27

PYQ

Family Fabaceae differs from Solanaceae and Liliaceae. With respect to the stamens, pick out the characteristics specific to family Fabaceae but not found in Solanaceae or Liliaceae.

[NEET 2023]

a

Polyadelphous and epipetalous stamens

b

Monoadelphous and Monothecous anthers

c

Epiphyllous and Dithecous anthers

d

Diadelphous and Dithecous anthers

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Q28

PYQ

Family Fabaceae differs from Solanaceae and Liliaceae. With respect to the stamens, pick out the characteristics specific to family Fabaceae but not found in Solanaceae or Liliaceae.

a

Epiphyllous and Dithecous anthers

b

Diadelphous and Dithecous anthers

c

Polyadelphous and epipetalous stamens

d

Monoadelphous and Monothecous anthers

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Q29

PYQ

Diadelphous stamens are found in

a

Citrus

b

Pea

c

China rose and citrus

d

China rose

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Q30

PYQ

Ray florets have

a

Superior ovary

b

Hypogynous ovary

c

Half inferior ovary

d

Inferior ovary

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Q31

PYQ

The ovary is half inferior in

[NEET 2020]

a

Mustard

b

Sunflower

c

Plum

d

Brinjal

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Q32

PYQ

Correct position of floral parts over thalamus in mustard plant is:

a

Margin of the thalamus grows upward, enclosing the ovary completely, and other parts arise below the ovary.

b

Gynoecium is present in the centre and other parts cover it partially.

c

Gynoecium is situated in the centre, and other parts of the flower are located at the rim of the thalamus, at the same level.

d

Gynoecium occupies the highest position, while the other parts are situated below it.

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Q33

PYQ

Correct position of floral parts over thalamus in mustard plant is

a

Margin of the thalamus grows upward, enclosing the ovary completely, and other parts arise below the ovary

b

Gynoecium is present in the centre and other parts cover it partially

c

Gynoecium is situated in the centre, and other parts of the flower are located at the rim of the thalamus, at the same level

d

Gynoecium occupies the highest position, while the other parts are situated below it

🔒

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Q34

PYQ

Ray florets have:

[NEET 2020]

a

superior ovary.

b

hypogynous ovary.

c

half inferior ovary.

d

inferior ovary.

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Q35

PYQ

Identify the correct features of Mango and Coconut fruits.
(i) In both fruit is a drupe
(ii) Endocarp is edible in both
(iii) Mesocarp in Coconut is fibrous, and in Mango it is fleshy
(iv) In both, fruit develops from monocarpellary ovary

a

(i), (ii) and (iii) only

b

(i) and (iv) only

c

(i) and (ii) only

d

(i), (iii) and (iv) only

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Q36

PYQ

Ray florets have:

a

superior ovary.

b

hypogynous ovary.

c

half inferior ovary.

d

inferior ovary.

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