Give differences between:
$(a)$ Testis and ovary
$(b)$ Sperm cell and ovum (egg) cell

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(A)
Testis Ovary
$(1)$ Testis is an egg-shaped gland with a length of $5 \ cm$ and a diameter of $2.5 \ cm$. $(1)$ Ovary is an almond-shaped gland with a length of $3 \ cm$,width of $2 \ cm$,and thickness of $1 \ cm$.
$(2)$ It produces the male sex hormone,testosterone. $(2)$ It produces female sex hormones,estrogen and progesterone.
$(3)$ Testes are located in the scrotum,outside the abdominal cavity. $(3)$ Ovaries are located inside the abdominal cavity on both sides of the uterus.

Sperm cell Ovum (egg) cell
$(1)$ Sperm cell is motile. $(1)$ Ovum is non-motile.
$(2)$ It consists of a head,middle piece,and a tail. $(2)$ It is a spherical cell structure surrounded by a zona pellucida layer.
$(3)$ Production continues throughout the male reproductive life. $(3)$ Production stops after menopause (around $50$ years of age).

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Similar Questions

Match the following columns:
Column-$I$Column-$II$
$(1)$ Testis$(a)$ Provides nutrition to sperms
$(2)$ Ovary$(b)$ Primary male sex organ
$(3)$ Theca interna$(c)$ Synthesis of testosterone
$(4)$ Sertoli cells$(d)$ Synthesis of estrogen
$(5)$ Leydig cells$(e)$ Primary female sex organ

Given below are the events in human reproduction. Write them in correct sequential order: Insemination,gametogenesis,fertilisation,parturition,gestation,implantation.

$A$ single ejaculation contains $...A...$ to $...B...$ million spermatozoa. Semen has a pH of $...C...$ to $...D...$. Its alkalinity helps to neutralize the acidity of the urethra. Here $A, B, C$ and $D$ refer to:

What is the cause of pseudopregnancy?

Ovulation can be detected by

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