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P. 1
Assignment
A. Multiple choice Questions(MCQs)
1. Which of the following are found in extreme saline conditions?
(1) Archaebacteria
(2) Eubacteria
(3) Cyanobacteria
(4) Mycobacteria
2. Viroids differ from viruses in having
(1) DNA molecules with protein coat
(2) DNA molecules without protein coat
(3) RNA molecules with protein coat
(4) RNA molecules without protein coat
3. Methanogens belong to
(1) eubacteria
(2) archaebacteria
(3) dinoflagellates
(4) slime moulds
4. Select the wrong statement.
(a) The walls of diatoms are easily destructible
(b) 'Diatomaceous earth' is formed by the cell walls of diatoms
(c) Diatoms are chief producers in the oceans
(d) Diatoms are microscopic and float passively in water
Match Column I with column II and select the correct option using the codes given
below:
Column I Column II
A. Pistils fused together 1. Gametogenesis
B. Formation of gametes 2. Pistillate
C. Hyphae of higher ascomycetes 3. Syncarpous
D. Unisexual female flower 4. Dikaryotic
Codes:
A B C D
(1) 4 3 2 1
(2) 2 1 4 3
(3) 1 2 4 3
(4) 3 1 4 2
