- The odd group from the following is
(a) Cray fish, pipe fish, puffer fish
(b) monitor lizard, cobra, tortoise
(c) scorpion, crab, tick
(d) jelly fish, sea anemone, coral.
(NSEB 2009-2010) - Which of the following is not a function of calcitonin?
(a) Promoting deposition of Ca2+ in bones
(b) Suppressing Ca2+ absorption in Gl tract
(c) Countering the action of parathormone
(d) Increasing reabsorption of Ca2+ in nephrons
(NSEB 2009-2010) - If a cytotoxin blocks the activity of an enzyme per-
manently, it is a
(a) competitive inhibitor
(b) non-competitive promoter
(c) non-competitive inhibitor
(d) competitive promoter.
(NSEB 2009-2010) - Which of the following adaptations is likely to be
observed in arid condition?
(i) Vertically hanging leaves
(ii) Presence of salt glands
(iii) Green fleshy stem
(iv) Absence of vascular tissue, scarcely developed
vascular tissue
(a) (i) and (ii) (b) (ii) and (iv)
(c) (i) and (iii) (d) (ii) and (iii)
(NSEB 2011) - Which of the following births must have preceded by
release of maximum number of eggs during ovulation
phase?
(a) Identical twins (b) Fraternal twins
(c) Identical triplet (d) Siamese twins
(NSEB 2011) - Water from the two tanks shown in the diagram was
tested 3 hours after they were stocked with indicated
animals. The predominant nitrogenous waste detected
in Tank I and Tank II respectively would be
(a) ammonia and urea
(b) ammonia in both
(c) urea in both
(d) urea and uric acid.
(NSEB 2012 -2013)
- Rohit complained of stomach ache and heart burn.
Deepak advised him to take lime juice (i) while Jyoti
advised him to take milk of magnesia (ii).
Which of these do you feel will work and how?
(a) i – because it will neutralise acidity in stomach
(b) ii – because it will neutralise excess acidity in
stomach
(c) i- because it will suppress the secretion of acid in
stomach
(d) ii- because it will suppress the secretion of acid in
stomach
(NSEB 2012-2013) - A botany student encountered a palm like, short tree
with pinnately compound leaves and sessile leaflets
bearing midrib, but no lateral veins. The stem had
persistent, woody, leaf bases. Branched, blunt finger-
like structures could be noticed on ground around the
base of trunk. The plant has to be
(a) Areca nut (b) Coconut palm
(c) Fern (d) Cycas.
(NSEB 2012-2013)
Answer Key
- (a) 2. (a) 3. (c) 4. (c) 5. (b)
- (a) 7. (b) 8. (d) 9. (b) 10. (c)
- (c) 12. (a) 13. (b) 14. (d) 15. (d)
- (c) 17. (b) 18. (a) 19. (d) 20. (c)
- (c) 22. (b) 23. (a) 24. (b) 25. (d)
(^) nn
Form IV
- Place of Publication : New Delhi
- Periodicity of its publication : Monthly
- Printer’s and Publisher’s Name : Mahabir Singh
Nationality : Indian
Address : Biology Today,
406, Taj Apartment,
New Delhi - 110029. - Editor’s Name : Anil Ahlawat
Nationality : Indian
Address : MT Biology Today,
19, National Media
Centre, Gurgaon
Haryana - 122002 - Name and address of : Mahabir Singh
individuals who own the 406, Taj Apartment
newspapers and partners or New Delhi
shareholders holding more than
one percent of the total capital
I, Mahabir Singh, hereby declare that particulars given above are true to
the best of my knowledge and belief.
Mahabir Singh
Publisher