In flowering plants, a mature male gametophyte contains _____
A) two haploid gametes and a diploid pollen grain
B) a generative cell and a tube cell
C) two sperm nuclei and one tube cell nucleus
D) two haploid microspores
E) a haploid nucleus and a diploid pollen wall
Answer: C
You might also like to view...
Which is a correct description of hormone action?
A. FSH stimulates Leydig cells in the testes. B. LH stimulates Sertoli cells in the testes. C. Testosterone stimulates corpus luteum. D. GnRH stimulates the anterior pituitary gland. E. Testosterone regulates LH and FSH in a positive feedback loop.
Some conditions like progeria do not run in families despite being autosomal dominant. How is this possible? What will be an ideal response?
__________ acts on the uterus and milk ducts. Fill in the blank(s) with the appropriate word(s)
Of the following, the social trend that would cause the fastest population increase is ________
A) declining fecundity B) lower nutritional values C) more older men getting married D) decreasing age of first pregnancy