Mark the incorrect statement.
- APolyspermy is prevented by depolarization of the membrane,which is called a fast block.
- BEntry of sperm into the ovum restarts the cell cycle by breaking down $MPF$ and turning on the $APC$.
- CIf implantation occurs anywhere else other than the uterus,it is called tubal pregnancy.
- DAbility to reproduce is lost in female primates after menopause.
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Similar Questions
Consider the following four statements $(A-D)$ and select the option which includes all the correct ones only.
$(A)$ The male sex accessory ducts include rete testis,vasa efferentia,epididymis and vas deferens.
$(B)$ Leydig cells synthesise and secrete testicular hormones called androgens.
$(C)$ The female reproductive system is located in the pelvic region.
$(D)$ Each testis has about $250$ compartments called testicular lobules.
$(A)$ The male sex accessory ducts include rete testis,vasa efferentia,epididymis and vas deferens.
$(B)$ Leydig cells synthesise and secrete testicular hormones called androgens.
$(C)$ The female reproductive system is located in the pelvic region.
$(D)$ Each testis has about $250$ compartments called testicular lobules.
Medium
View SolutionSelect the correct option from the following.
Medium
View SolutionMatch the columns.
Column $I$ Column $II$ $(a)$ Corpus luteum $(1)$ Initially in abdominal cavity then in scrotum $(b)$ Testis $(2)$ At the anterior part of scrotum in male $(c)$ Myometrium $(3)$ Graafian follicle $(d)$ Penis $(4)$ Uterus
| Column $I$ | Column $II$ |
|---|---|
| $(a)$ Corpus luteum | $(1)$ Initially in abdominal cavity then in scrotum |
| $(b)$ Testis | $(2)$ At the anterior part of scrotum in male |
| $(c)$ Myometrium | $(3)$ Graafian follicle |
| $(d)$ Penis | $(4)$ Uterus |
Easy
View SolutionGive differences between:
$(A)$ Spermatogenesis and Oogenesis
$(B)$ Embryo development and Foetus development
$(A)$ Spermatogenesis and Oogenesis
$(B)$ Embryo development and Foetus development
Easy
View SolutionGenetic recombination is due to .....
Medium
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