1. A force which acts against the achievement of highest possible level to population growth is known as
(a) population pressure (b) saturation level
(c) carrying capacity (d) environmental resistance
2. Antibiotic flavicin is obtained from
(a) Aspergillus flavus (b) Aspergillus davatum
(c) Streptomyces grieseus (d) Streptomyces fradiae
3. The crystal of lead zirconate is a key component of
(a) sonography (b) electrocardiography
(c) electroencephalography (d) magnetoencephalography
4. Antifeedant property occurs in
(a) nicotine (b) azadiractin
(c) rotenone (d) cinerin
5. Latest trend in plant disease control is
(a) chemical control (b) biological control
(c) good manure and fertilizer (d) breeding for disease resistance
6. Silk is the secretion of
(a) cephalic glands (b) gastric glands
(c) buccal glands (d) salivary glands
7. Endometrium is the lining of
(a) bladder (b) vagina
(c) uterus (d) oviduct
8. Which animal has gone extinct in recent times in India ?
(a) Acinonyx jubatus (b) Antilope cervicapra
(c) Rhinocerus unicornis (d) Panthera leo
9. What is true about cleavage in the fertilized egg in humans ?
(a) It is meroblastic
(b) It starts while the egg is in fallopian tube
(c) It is identical to normal mitosis
(d) It starts when the egg reaches in uterus
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10. ‘Climacteric’ is
(a) a phenomenon related to fruit ripening
(b) the condition of a plant when all its fruits are almost ripe
(c) the condition of a plant when most of its leaves have turned yellow
(d) none of the above
11. Ethylene is a
(a) gaseous hormone (b) gaseous enzyme
(c) liquid-gas mixture (d) solid hormone
12. When the pollen tube enters through the mieropyle, it is termed as
(a) chalazogamy (b) mesogamy
(c) porogamy (d) none of these
13. For self pollination, flower must be
(a) unisexual (b) bisexual
(c) monosexual (d) asexual
14. Which is not a gonadal hormone ?
(a) Progesterone (b) Testosterone
(c) Adrenalin (d) Estrogen
15. Cochlea of mammalian internal ear is concerned with
(a) hearing (b) balance of body posture
(c) both (a) and (b) (d) perception changes of atmospheric pressure
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