Question 17
Which of the following statements are true about unisexual flowers?

(i) They possess both stamen and pistil
(ii) They possess either stamen or pistil
(iii) They exhibit cross-pollination
(iv) Unisexual flowers possessing only stamens cannot produce fruits

(a) (i) and (iv)
(b) (ii), (iii) and (iv)
(c) (iii) and (iv)
(d) (i), (iii) and (iv)

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Solution

(b) (ii), (iii) and (iv)

The flower may be unisexual (papaya, watermelon) when it contains either stamens or pistil. They exhibit cross-pollination, i.e., the transfer of the pollen grains from the anther of one plant to the stigma of the other plant. Unisexual flowers possessing only stamens cannot produce fruits since it needs both male and female gamete to produce a zygote.

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Similar questions

Question 17
Which of the following statements are true about unisexual flowers?

(i) They possess both stamen and pistil
(ii) They possess either stamen or pistil
(iii) They exhibit cross-pollination
(iv) Unisexual flowers possessing only stamens cannot produce fruits

(a) (i) and (iv)
(b) (ii), (iii) and (iv)
(c) (iii) and (iv)
(d) (i), (iii) and (iv)

Q. Which among the following statements are true for uni-sexual flowers?
(i) They possess both stamen and pistil.
(ii) They possess either stamen or pistil.
(iii) They exhibit cross pollination.
(iv) Uni-sexual flowers possessing only stamens cannot produce fruits.

Question 16
Which of the following statements are true about flowers?

(i) Flowers are always bisexual
(ii) They are the sexual reproductive organs
(iii) They are produced in all groups of plants
(iv) After fertilization, they give rise to fruits

(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)

Which of the following statements are true for flowers?
(i) flowers are always bisexual
(ii) they contain sexual reproductive organs
(iii) they are produced in all groups of plants
(iv) after fertilisation, they give rise to fruits
(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)

Tick (√ ) the correct answer:

(a) The reproductive part of a plant is the

(i) leaf

(ii) stem

(iii) root

(iv) flower

(b) The process of fusion of the male and female gametes is called

(i) fertilisation

(ii) pollination

(iii) reproduction

(iv) seed formation

(i) seed