- 1(current)
Q. No.The biome characterized by a mean annual temperature between 0C and 25C and mean annual precipitation between 25 cm and 100 cm is:
1. Desert
2. Arctic and alpine tundra
3. Temperate forest
4. Grassland
A system of rotating crops with legume or grass pastures to improve soil structure and fertility is called:
1. Shifting agriculture
2. Ley farming
3. Contour farming
4. Strip farming
Identify the biome that is not correctly matched with the physical parameters given in corresponding Column II and Column III:
|
Biome |
Mean annual temperature [OC] |
Mean annual precipitation [cm] |
|
|
1. |
Tropical forest |
20 – 25 |
130 – 430 |
|
2. |
Arctic and alpine tundra |
-12 – 2 |
10 – 125 |
|
3. |
Coniferous forest |
-5 –5 |
100 – 200 |
|
4. |
Temperate forest |
8 – 22 |
50 – 225 |
A terrestrial animal must be able to
1. Conserve water.
2. Active pump salts out through the skin.
3. Excrete large amounts of salts in urine.
4. Excrete large amounts of water in urine.
The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that
1. both plant populations in this habitat decreased.
2. population B competed more successfully for food than population A.
3. population A produced more offspring than population B.
4. population A consumed the members of population B.
Consider the following statements (A)-(D) each with one or two blanks:
| (A) | Bears go into ________ (1) _ during winter to ________ (2) _ cold weather. |
| (B) | A conical age pyramid with a broad base represents _________ (3) human population. |
| (C) | A wasp pollinating a fig flower is an example of ________ (4) _ . |
| (D) | An area with high levels of species richness is known as _________ (5) . |
Which of the following options, gives the correct fill-ups for the respective blank numbers from(1) to (5) in the statements?
| 1. | (1) - hibernation, (2) - escape, (3) - expanding, (5) - hot spot |
| 2. | (3) - stable, (4) - commensalism, (5) - marsh |
| 3. | (1) - aestivation, (2) - escape, (3) - stable, (4) - mutualism |
| 4. | (3) - expanding, (4) - commensalism, (5) - biodiversity park |
- 1(current)
Q. No.
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