CBSE Class 10 Science 2022 · Paper 31/1/1 · Question 3

(a) Mustard and hibiscus. Their flowers are bisexual: each flower has both stamens and a pistil, so pollen from its own anthers can reach its own stigma. Papaya and watermelon have unisexual flowers, with either stamens or a pistil, so their pollen has to be carried to a different flower. (b) The two reproductive parts of a bisexual flower are the stamens, the male part (anther and filament), which produce the pollen grains, and the pistil or carpel, the female part (stigma, style and ovary), whose ovary contains the ovules.