Choose the correct answer from the options given below:

The site of maturation of human sperms is the

1. Seminiferous tubule
2. Interstitial cells
3. Epididymis
4. Prostate gland

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Which of the following is not a natural reflex action?

1. Knee-jerk
2. Blinking of eyes due to strong light
3. Salivation at the sight of food
4. Sneezing when any irritant enters the nose

State the exact location of the following:

(i) Tricuspid valve

(ii) Amnion

(iii) Yellow spot

(iv) Seminal vesicle

(v) Adrenal gland

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After mitotic cell division, a female human cell will have

1. 44 + xx chromosomes
2. 44 + xy chromosomes
3. 22 + x chromosomes
4. 22 + y chromosomes