The flower may be unisexual when it contains either stamen or pistil or bisexual when it contains both stamens and pistil. Stamen is the male reproductive part and it produces pollen grains that often sticks to our hands if we touch the stamen of a flower. Pistil is the female reproductive part.
1. Which of these is unisexual ?
(i) hibiscus
(ii) papaya
(iii) watermelon
(iv) both b and c
2. Which of these is bisexual ?
(i) mustard
(ii) papaya
(iii) watermelon
(iv) both b and c
3. Pollen grains are _____ in colour.
(i) greenish
(ii) brownish
(iii) yellowish
(iv) orangish
4. Pistil is present in the centre of a flower. True or false ?
(i) TRUE
(ii) FALSE
5. Pistil is made up of __ parts.
(i) 1
(ii) 2
(iii) 3
(iv) 4
