6666 MTMTBIOLOGY TODAYBIOLOGY TODAY || MARCH ‘16MARCH ‘16
- Match the following and select the correct option.
Column - I Column - II
A. Pteris (i) Gymnosperm
B. Cycas (ii) Bryophyte
C. Sphagnum (iii) Algae
D. Sargassum (iv) Pteridophyta
(a) A - (iv), B - (ii), C - (i), D - (iii)
(b) A - (iv), B - (i), C - (ii), D - (iii)
(c) A - (ii), B - (iii), C - (iv), D - (i)
(d) A - (i), B - (iv), C - (iii), D - (ii)
- 1 / 4 TT :^1 / 2 Tt :^1 / 4 tt is the binomial expansion of
(a)
1
2
1
2
2
T+ t
(b)
1
4
1
4
2
T+ t
(c)
1
4
1
2
2
T+ t
(d)
1
2
1
4
2
T+ t
- Choose the wrong pair.
(a) Divergent evolution - Forelimbs of whales,
bats, cheetah and human
(b) Convergent evolution - Flippers of penguins and
dolphins
(c) Homologous structures - Vertebrate hearts
(d) Analogous structures - Tendrils of Bougainvillea
and thorns of Cucurbita
- Read the statements.
(i) IgE antibodies are produced in an allergic reaction.
(ii) B-lymphocytes mediate cell mediated immunity.
(iii) The yellowish fluid colostrum has abundant IgE
antibodies.
(iv) Spleen is a secondary lymphoid organ.
Of the above statements
(a) (i) and (iv) are correct
(b) (i) and (ii) are correct
(c) (ii) and (iv) are correct
(d) (iii) and (iv) are correct
- In the ribose of RNA, unlike DNA, every nucleotide residue
has an additional
(a) COOH group in the 2′ position
(b) OH group in the 5′ position
(c) OH group in the 2′ position
(d) Phosphate group in the 2′ position
- Progestasert is an IUD which makes the uterus unsuitable
and cervix hostile to the sperms as they are
(a) hormone releasing IUDs
(b) copper releasing IUDs
(c) ideal contraceptive
(d) non-medicated IUDs.
- Golden rice is a genetically modified crop plant where the
incorporated gene is meant for biosynthesis of
(a) omega 3 (b) vitamin A
(c) vitamin B (d) vitamin C.
49. Triticale is an example of
(a) autopolyploidy (b) allopolyploidy
(c) aneuploidy (d) none of these.
50. Maximum absorption of light by chlorophyll a occurs in
which regions of the absorption spectrum?
A. Blue B. Red
C. Green D. Yellow
(a) A and B only (b) B and C only
(c) A and D only (d) B and D only
51. Identify the correctly matched structure and its secretion.
(a) Brunner’s gland - Salivary amylase
(b) Intestinal mucosa - Insulin
(c) Gall bladder - Bile
(d) Salivary gland - Lysozyme
52. Which of the following statements does not apply to
eutrophication?
(a) It is the natural aging of a lake by nutrient enrichment
of its water.
(b) In a young lake the water is cold and clear and
supports less life.
(c) The nutrients such as sulphur and phosphorus
encourage the growth of aquatic organisms in the
lake.
(d) Pollutants released by man radically accelerate the
aging process of a lake.
53. Given here is a pie chart representation
A
B
CD
of the extent of global diversity of
invertebrates. What groups the four
portions (A-D) represent respectively?
A B C D
(a) Insects Crustaceans Other animal
groups
Molluscs
(b) Crustaceans Insects Molluscs Other animal
groups
(c) Molluscs Other animal
groups
Crustaceans Insects
(d) Insects Molluscs Crustaceans Other animal
groups
- Match the following and select the correct answer.
A. Centriole (i) lnfoldings in mitochondria
B. Chlorophyll (ii) Thylakoids
C. Cristae (iii) Nucleic acids
D. Ribozymes (iv) Basal body of cilia or flagella
A B C D
(a) (iv) (ii) (i) (iii)
(b) (i) (ii) (iv) (iii)
(c) (i) (iii) (ii) (iv)
(d) (iv) (iii) (i) (ii)
