1. The heartbeat is regulated by—
(A) Pacemaker
(B) Vagus nerve
(C) Sympathetic nerve
(D) All of these
2. Haptens are:
(A)Pseudoantigens
(B)Incomplte antigen
(C)Antigen
(D)Isoantigens
3. Which pair is correct ?
(A) Microlecithal eggs — Dipnoi
(B) Homolecithal eggs — Amphibia
(C) Mesolecithal eggs — Bird
(D) Centrolecithal eggs — Insect
4.Lactogenic hormone is secreted by
(A)Mammary gland
(B)Placenta
(C)Ovary
(D)Pituitary
5. In Drosophila, sex determination depends on—
(A) Y-chromosome
(B) X-chromosome
(C) Autosome
(D) X-chromosome & autosome both
6. In which stage does centromere divide in two ?
(A) Metaphase-I
(B) Prophase-I
(C) Metaphase-II
(D) Anaphase-II
7.Phototrophic movement is controlled by
(A)Auxin
(B)Gibberellin
(C)Cytikinin
(D)Ethylene
8. Which animal is egg laying mammal ?
(A) Didelphys
(B) Macropus
(C) Pteropus
(D) Tachyglossus
9. The term ‘Plasmalemma’ was given by—
(A) C. Nageli & C. Cramer
(B) J.Q. Plowe
(C) Dancilli & Davson
(D) Robertson
10. The innermost layer of egg albumen in birds is called—
(A) Inner thin albumen
(B) Vitelline membrane
(C) Dense alburmen
(D) Chalaziferous layer
Note : Answers will be updated soon..........................
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