Given below are five statements (i-v) regarding contrivances to ensure cross-pollination in plants (i) Dicliny - Anthers and stigmas mature at different times in a bisexual flower. (ii) Dichogamy - Flowers are unisexual. (iii) Prepotency - Pollen grains of the same flower germinate more rapidly over the stigma than the pollen grains of another flower. (iv) Heterostyly - Two or three types of flowers with different heights of styles. (v) Herkogamy - A mechanical device to prevent self-pollination. Which of the above statements are correct?

Question

Given below are five statements (i-v) regarding contrivances to ensure cross-pollination in plants (i) Dicliny - Anthers and stigmas mature at different times in a bisexual flower. (ii) Dichogamy - Flowers are unisexual. (iii) Prepotency - Pollen grains of the same flower germinate more rapidly over the stigma than the pollen grains of another flower. (iv) Heterostyly - Two or three types of flowers with different heights of styles. (v) Herkogamy - A mechanical device to prevent self-pollination. Which of the above statements are correct? (A) (i) and (ii) (B) (i), (ii) and (iii) (C) (iii), (iv) and (v) (D) (iv) and (v)

Tardigrade Admin · Accepted Answer

Dicliny - Flowers are unisexual so that self pollination is not possible
Dichogamy - Anthers and stigmas mature at different times in a bisexual flower so as to prevent self pollination.
Prepotency - Pollen grains of another flower germinate more rapidly over the stigma than the pollen grains of the same flower.