1. With reference to the food chains in ecosystems, which of the following kinds of organisms is/are known as decomposer organisms/organisms?
1. Virus
2. Fungi
3. Bacteria
Select the correct answer using the codes given below:
a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3
Answer. b)
2. The most important fishing grounds of the world are found in the regions where
a) Warm and cold atmospheric currents meet
b) Rivers drain out large amounts of freshwater into the sea
c) Warm and cold oceanic currents meet
d) Continental shelf is undulating
Answer. c)
3. Which of the following is/are unique characteristic/characteristics of equatorial forests?
1. Presence of tall, closely set trees with crowns forming a continuous canopy
2. Coexistence of a large number of species
3. Presence of numerous varieties of epiphytes
Select the correct answer using the codes given below:
a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3
Answer. D)
4. The annual range of temperature in the interior of the continents is high as compared to coastal areas. What is/are the reason/reasons?
1. Thermal difference between land and water
2. Variation in altitude between continents and oceans
3. Presence of strong winds in the interior
4. Heavy rains in the interior as compared to coasts
Select the correct answer using the codes given below:
a) 1 only
b) 1 and 2 only
c) 2 and 3 only
d) 1, 2, 3 and 4
Answer. A)
5. Which of the following is/are the characteristic/characteristics of Indian coal?
1. High ash content
2. Low sulfur content
3. Low ash fusion temperature
Select the correct answer using the codes given below:
a) 1 and 2 only
b) 2 only
c) 1 and 3 only
d) 1, 2 and 3
Answer. A)
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