A) The pollen grains are transferred from one flower to another flower situated on the same plant
B) The pollen grains are transferred from one flower to another flower, of another plant of the same species
C) The pollen grains of male flower are transferred to the stigma of the female flower
D) The pollen grains of one flower are transferred to the stigma of the same flower
Correct Answer: D
Solution :
Transfer of pollen grains from male flower to female flower is known as pollination. It is of two types: (i) Self-pollination occurs in bisexual of hermaphrodite flowers in which pollen grains of male flower are transferred to stigma of female flower of the same flower. Bisexual or hermaphrodite flowers contain male and female flowers in the same flower. (ii) Cross-pollination is the transfer of pollen grains of a male flower to the stigma of female flower which occurs either on the same plant (monoecious) or on the different plant (dioecious).
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