All of the following statements referring to the uterine cycle are true except a. fsh and lh directly promote development of the uterine endometrium b. the corpus luteum is formed from the ruptured follicle c. after ovulation estrogen is secreted by the developing follicle d. in the follicular phase of the cycle a decrease in the levels of ovarian hormones signals menstruation

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

enjoy!

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explanation:

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.