Most important and adamant MCQs of Biology for MDCAT Tests.
Past Papers repeated and advanced questions for the best preparation for the test.
1. The head of Hydra lacks
Ans. Dendrites
2. A nerve is a bundle of axons and dendrites bounded by
Ans. connective tissue
3. T3, T4 and Calcitosin are produced by
Ans. Thyroid glands
4. How many spinal nerves are present in a man?
Ans. 62
5. Pinus sylyestris belongs to
Ans. Class Pinata
6. Development in bananas is called
Ans. Parthenocarpy
7. A burst of respiratory activity also accompanies fruit ripening called
Ans. Climacteric
8. Effect of photoperiodism was first studied in 1920 by
Ans. Garner and Allard
9. Cocklebur is which type of plant according to photoperiodism
Ans. Short day plant
10. Photocrome exists in two forms P-660 and
Ans. P-730
11. Organisms produced from a single cell by subculturing are called
Ans. clones
12. The process in which the zygote is developed into new off-springs but with different combinations, such as twins are called
Ans. Triplets or fractional twins
13. The process which leads to the union of gametes is called
Ans. fertilization
14. The condition in which when fertilization is completed, a shelled egg is laid which hatches to off-springs. This condition is called
Ans. ovoviviparous
15. In humans only one ovum is usually discharged from the ovary at one time, this phenomenon is called
Ans. ovulation
16. In females the events of the menstrual cycle are regulated by the pituitary …..
Ans. Gonadotropins
17. Menstruation stage usually lasts for
Ans. 3 to 7 days
18. The end or complete stop of the menstrual cycle is called
Ans. menopause
19. Mostly at the age of …… females become menopausal.
Ans. 45 years
20. Which one is the most reproductive day in females after menstruation?
Ans. 14 day
21. The after-birth process starts within ………. minutes after birth.
Ans. 10-45 minutes
22. Gonorrhea is caused by
Ans. Gram-positive bacterium
23. Which gram-positive bacterium causes gonorrhea?
Ans. Neisseris gonorrhoeae
24. Syphilis is caused by
Ans. spirochaete
25. Which spirochaete causes syphilis?
Ans. Treponema pallidum
26. Genital Herpes is a
Ans. virl disease
27. Genital Herpes causes by
Ans. herpes simplex type 2 virus
28. AIDS stands for
Ans. Acquired Immune Deficiency Syndrome
29. The reduction of progesterone level stimulates the pituitary gland to produce
Ans. Oxytocin hormone
30. Developing seeds are a rich source of
Ans. Auxins
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