Assertion   :       Amoeba shows multiple fission during unfavourable conditions.

Reason      :       Chances of survival are less during unfavourable conditions.

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

Assertion   :       Sexual reproduction is advantageous than asexual reproduction.

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

Assertion   :       In honey bee, life history shows natural and complete parthenogenesis.

Reason      :       In honey bee, both drones and workers are parthenogenetically developed.

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.

Assertion   :       Urethra in human male acts as urinogenital canal.

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

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

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

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

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

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

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

Assertion   :       Corpus luteum degenerates if the ovum remains unfertilized.

Reason      :       Corpus luteum secretes progesterone which maintains the pregnancy.

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

Reason      :       Prolactin secretion starts at puberty.