A scientist wanted to conduct a genetic experiment on mice. He cut the tails of all the mice and made
them reproduce. What will be the phenotype of the offsprings?
(a) All the offsprings will be tailless.
(b) There will be a mix of tailed and tailless offsprings.
(c) All the offsprings will have tails.
(d) Tail of the offsprings cannot be predicted.
The hormone that induces vigorous contractions of the uterus in a pregnant mother is:
(a) Oestrogen (b) Prolactin
(c) Oxytocin (d) Progesterone
Assertion (A): Seminal vesicles pour an alkaline secretion into the semen as it passes through the ureter.
Reason (R): The female vagina is acidic and needs to be neutralized for sperm survival.
(a) (A) is true and (R) is false. (b) (A) is false and (R) is true.
(c) Both (A) and (R) are true. (d) Both (A) and (R) are false.
The structure that lies at the junction of the choroid and the iris and is itself a part of the choroid is called:
(a) Ciliary body (b) Suspensory ligament
(c) Pupil (d) Lens
The number of live births per thousand people per year is called:
(a) Mortality (b) Population density
(c) Population growth rate (d) Natality
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