Default Title

Question (11)

QN008149

Flowers pollinated by insects usually have

(A) dull colour and no smell
(B) sticky pollen and nectar
(C) very small petals only
(D) no stigma

Correct Answer: B

Explanation:

Insect-pollinated flowers have nectar and sticky pollen.

Link:

Report Error

Question (12)

QN008150

Which structure develops into a fruit after fertilisation?

(A) Ovule
(B) Petal
(C) Ovary
(D) Anther

Correct Answer: C

Explanation:

Ovary develops into fruit after fertilisation.

Link:

Report Error

Question (13)

QN008151

The ovule develops into a

(A) root
(B) seed
(C) stem
(D) leaf

Correct Answer: B

Explanation:

Ovule develops into a seed.

Link:

Report Error

Question (14)

QN008152

Fusion of male and female gametes forms a

(A) spore
(B) embryo
(C) zygote
(D) pollen tube

Correct Answer: C

Explanation:

Fusion of gametes forms a zygote.

Link:

Report Error

Question (15)

QN008153

Which scientist is known as the ‘Father of Indian Embryology’?

(A) Louis Pasteur
(B) Darwin
(C) P. Maheshwari
(D) Mendel

Correct Answer: C

Explanation:

P. Maheshwari is called the Father of Indian Embryology.

Link:

Report Error

Question (16)

QN008154

A pollen grain germinates on the stigma and forms

(A) fruit wall
(B) pollen tube
(C) embryo sac
(D) seed coat

Correct Answer: B

Explanation:

Germinating pollen grain forms a pollen tube.

Link:

Report Error

Question (17)

QN008155

Which structure connects stigma to ovary?

(A) Filament
(B) Ovule
(C) Style
(D) Sepal

Correct Answer: C

Explanation:

Style connects stigma to ovary.

Link:

Report Error

Question (18)

QN008156

If a species has 16 chromosomes in body cells, how many chromosomes will be present in its gametes?

(A) 32
(B) 16
(C) 8
(D) 4

Correct Answer: C

Explanation:

Gametes contain half the chromosome number. Half of 16 is 8.

Link:

Report Error

Question (19)

QN008157

A flower releases 8,00,000 pollen grains and finally forms 160 seeds. What is the pollen-to-seed ratio?

(A) 2000:1
(B) 5000:1
(C) 4000:1
(D) 1000:1

Correct Answer: B

Explanation:

8,00,000 ÷ 160 = 5000. Ratio = 5000:1.

Link:

Report Error

Question (20)

QN008158

A pollen grain reaches the stigma but no pollen tube develops. Which process will fail?

(A) Pollination
(B) Fertilisation
(C) Seed dispersal
(D) Photosynthesis

Correct Answer: B

Explanation:

Fertilisation cannot occur without pollen tube formation.

Link:

Report Error

Question (11)

Flowers pollinated by insects usually have

Explanation:

Link:

Question (12)

Which structure develops into a fruit after fertilisation?

Explanation:

Link:

Question (13)

The ovule develops into a

Explanation:

Link:

Question (14)

Fusion of male and female gametes forms a

Explanation:

Link:

Question (15)

Which scientist is known as the ‘Father of Indian Embryology’?

Explanation:

Link:

Question (16)

A pollen grain germinates on the stigma and forms

Explanation:

Link:

Question (17)

Which structure connects stigma to ovary?

Explanation:

Link:

Question (18)

If a species has 16 chromosomes in body cells, how many chromosomes will be present in its gametes?

Explanation:

Link:

Question (19)

A flower releases 8,00,000 pollen grains and finally forms 160 seeds. What is the pollen-to-seed ratio?

Explanation:

Link:

Question (20)

A pollen grain reaches the stigma but no pollen tube develops. Which process will fail?

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY