11. Identify the wrong statement with reference to transport of oxygen.
(1) Partial pressure of CO2 can interfere with O2 binding with haemoglobin
(2) Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin
(3) Low pCO2 in alveoli favours the formation of oxyhaemoglobin
(4) Binding of oxygen with haemoglobin is mainly related to partial pressure of O2
12. Floridean starch has structure similar to
(1) Amylopectin and glycogen
(2) Mannitol and algin
(3) Laminarin and cellulose
(4) Starch and cellulose
13. By which method was a new breed ‘Hisardale’ of sheep formed by using Bikaneri ewes and Marino rams?
(1) Mutational breeding
(2) Cross breeding
(3) Inbreeding
(4) Out crossing
14. Match the following columns and select the correct option.
Column-I Column-II
(a) Pituitary gland (i) Grave’s disease
(b) Thyroid gland (ii) Diabetes mellitus
(c) Adrenal gland (iii)Diabetes insipidus
(d) Pancreas (iv) Addison’s disease
(a) (b) (c) (d)
(1) (iii) (ii) (i) (iv)
(2) (iii) (i) (iv) (ii)
(3) (ii) (i) (iv) (iii)
(4) (iv) (iii) (i) (ii)
15. Select the option including all sexually transmitted diseases.
(1) Gonorrhoea, Malaria, Genital herpes
(2) AIDS, Malaria, Filaria
(3) Cancer, AIDS, Syphilis
(4) Gonorrhoea, Syphilis, Genital herpes
16. Choose the correct pair from the following
(1) Polymerases - Break the DNA into fragments
(2) Nucleases - Separate the two strands of DNA
(3) Exonucleases - Make cuts at specific positions within DNA
(4) Ligases - Join the two DNA Molecules
17. Ray florets have
(1) Superior ovary
(2) Hypogynous ovary
(3) Half inferior ovary
(4)
Inferior ovary
18. Match the following columns and select the correct option.
Column-I Column-II
(a)
Bt cotton (i) Gene therapy
(b) Adenosine (ii) Cellular defence deaminase deficiency
(c) RNAi (iii)Detection of HIV infection
(d) PCR (iv) Bacillus thuringiensis
(a)
(b) (c) (d)
(1)
(iii) (ii) (i) (iv)
(2)
(ii) (iii) (iv) (i)
(3)
(i) (ii) (iii) (iv)
(4)
(iv) (i) (ii) (iii)
19. The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous
plants
is/are
(1) Nitrate alone
(2) Ammonia and oxygen
(3)
Ammonia and hydrogen
(4) Ammonia alone
20. Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
(1) Gibberellin
(2) Ethylene
(3) Abscisic acid
(4) Cytokinin
Answer:
11. (2) Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin
12. (1) Amylopectin and glycogen
13. (2) Cross breeding
14. (2) (iii) (i) (iv) (ii)
15. (4) Gonorrhoea, Syphilis, Genital herpes
16. (4) Ligases - Join the two DNA Molecules
17. (4) Inferior ovary
18. (4) (iv) (i) (ii) (iii)
19. (3) Ammonia and hydrogen
20. (1) Gibberellin