Human Reproduct...

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : In human male, testes are extra-abdominal and lie in scrotal sacs.

Reason : Scrotum acts as thermoregulator and keeps testicular temperature lower by 2°C normal spermatogenesis.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : Asexual reproduction is also called blastogenesis.

Reason : In asexual reproduction, there is no fusion of gametes.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : Urethra in human male acts as urinogenital canal.

Reason : Urethra carries only urine while sperms are carried by vasa deferentia only.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : Sexual reproduction is advantageous than asexual reproduction.

Reason : It is rapid mode of reproduction while asexual reproduction is slow mode of reproduction.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : Penis of male is homologous to clitoris of human female.

Reason : Both are highly sensitive and both supported by corpora cavernosa.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : Fallopian funnel of oviduct is with finger-like fimbriae.

Reason : Graafian follicle of the ovary is with a secondary oocyte hanging in the cavity called the antrum.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : At puberty, human male develop secondary sexual characters.

Reason : At puberty, there is decreased secretion of testosterone in male.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : Size of breasts increases at puberty in human females.

Reason : Prolactin secretion starts at puberty.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : Vagina acts as copulation canal and fertilization canal.

Reason : Both insemination and fusion of gametes occur in vagina of females.

Directions: In the following questions a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion : Primary spermatocytes of testes are haploid.

Reason : Primary spermatocytes are formed by meiosis-I in the spermatogonia.