Biology today

7070 MTMTBIOLOGY TODAYBIOLOGY TODAY || MARCH ‘16MARCH ‘16

87. Match the name of the animal (Column I), with one characteristic

(Column II), and the phylum / class (column III) to which it

belongs.

Column I Column II Column III

(a) Limulus Body covered by

chitinous exoskeleton

Pisces

(b) Adamsia Radially symmetrical Porifera

(c) Petromyzon Ectoparasite Cyclostomata

(d) Ichthyophis Terrestrial Reptilia

88. Select the wrong statement.

(a) In Oogamy, female gamete is smaller and motile, while

male gamete is larger and non-motile.

(b) Chlamydomonas exhibits both isogamy and anisogamy

and Fucus shows oogamy.

(c) Isogametes are similar in structure, function and

behaviour.

(d) Anisogametes differ either in structure, function or

behaviour.

89. Which of the following is correctly matched without
    exception in regard to plant classification?
    (a) Family – Poaceae - ae
    (b) Division – Pteridophyta - phyta
    (c) Class – Bryopsida - sida
    (d) Genus – Solanum - um


90. (i) They help in respiration.

(ii) They help in cell wall formation.

(iii) They help in DNA replication.

(iv) They increase surface area of plasma membrane.

Which of the following prokaryotic structures has all the
above roles?
(a) Ribosome (b) Mesosome
(c) Lysosome (d) Polysome

91. Match Column I with Column II.

Column I Column II

P. Pollen grains (i) Photochemical smog

Q. PAN (ii) Particulate pollution

R. CO 2 (iii) Global warming

S. Cadmium (iv) Itai itai disease

(a) P-(ii), Q-(i), R-(iii), S-(iv)

(b) P-(iv), Q-(ii), R-(i), S-(iii)

(c) P-(i), Q-(ii), R-(iii), S-(iv)

(d) P-(iii), Q-(i), R-(ii), S-(iv)

92. IUDs which are used by females
    (a) are implanted under the skin and they release
    progestogen and estrogen
    (b) act as spermicidal jellies
    (c) release copper ions in the uterus that increase
    phagocytosis of sperm
    (d) block the entry of sperms into vagina.


93. Entry of pollen tube through micropyle is termed as
    (a) mesogamy (b) porogamy
    (c) syngamy (d) chalazogamy


94. Lindeman for the first time gave energy transfer law, which
    states that
    (a) only 20% of the energy is transferred to each trophic
    level
    (b) only 10% of the energy is transferred to each trophic
    level
    (c) only 30% of the energy is transferred to each trophic
    level
    (d) only 50% of the energy is transferred to each trophic
    level.


95. Which of the following statements about enzymes is
    wrong?
    (a) Enzymes are denatured at high temperatures.
    (b) Enzymes are mostly proteins but some are lipids also.
    (c) Enzymes are highly specific.
    (d) Enzymes require optimum pH and temperature for
    maximum activity.


96. Find the wrongly matched pair.
    (a) Unicellular glandular cells – Goblet cell
    (b) Fusiform fibres – Smooth muscle
    (c) Cartilage – Areolar tissue
    (d) Intercalated discs – Cardiac tissue.

mgIms Wardha : 17 th April

kerala pmt : 27 th & 28th April

Ap EAmCEt : 29 th April

AIpmt : 1 st May

k-CEt : 4 th & 5th May

COmEDk : 8 th May

J & k : 14 th & 15th May

WbJEE : 17 th May

AIIms : 29 th May

JIpmER : 5 th June

EXAM DATES 2016