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

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

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   :       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.

Assertion   :       Vagina acts as copulation canal and fertilization canal.

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

Assertion   :       Primary spermatocytes of testes are haploid.

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

Assertion   :       Spermiation is the transformation of spermatid into sperm.

Reason      :       During spermiation, sperms get nutrition from sertioli cells.

Assertion            :       During fertilization only head of spermatozoa enters egg.

Reason               :       If several spermatozoa hit the egg at same time, all can enter the egg.

Assertion             :       In morula stage, cells divide without increase in size.

Reason                 :      Zona pellucida remain undivided till cleavage is complete.

Assertion   :       Holoblastic cleavage with almost equal sized blastomeres is a characteristic of placental animals.

Reason      :      Eggs of most mammals, including humans, are of centrolecithal type