Which of the following structures is responsible for the
production of sperm in the male reproductive system ?
A. Prostate gland
B. Seminal vesicles
C. Epididymis
D. Testes
Ans. D
Ques 12. During double fertilization in angiosperms, which of the
following events occurs ?
A. Fusion of a sperm cell with the egg cell to form a zygote,
followed by fusion of another sperm cell with the polar nuclei to
form endosperm
B. Fusion of a sperm cell with the egg cell to form the endosperm,
followed by fusion of another sperm cell with the polar nuclei to
form a zygote
C. Fusion of a sperm cell with the egg cell to form a seed, followed
by fusion of another sperm cell with the polar nuclei to form
endosperm
D. Fusion of a sperm cell with the polar nuclei to form the zygote,
followed by fusion of another sperm cell with the egg cell to
form endosperm
Ans. A