Autecology is the

Ecotone is

1. a polluted area

2. the bottom of a lake

3. a zone of transition between two communities

4. a zone of developing community

Biosphere is

1. a component in the ecosystem

2. composed of the plants present in the soil

3. life in the outer space

4. composed of all living organisms present on earth which interact with the physical environment

Ecological niche is

1. the surface area of the ocean

2. an ecologically adapted zone

3. the physical position and functional role of a species within the community

4. formed of all plants and animals living at the bottom of a lake

According to Allen's rule, the mammals from colder climates have

1. shorter ears and longer limbs

2. longer ears and shorter limbs

3. longer ears and longer limbs

4. shorter ears and shorter limbs

Salt concentration (salinity) of the sea measured in parts per thousand is
1. 10-15
2. 30-70
3. 0-5
4. 30-35

Formation of tropical forests needs mean annual temperature and mean annual precipitation as

1. 18-25°C and 150-400 cm

2. 5-15°C and 50- 100 cm

3. 30-50°C and 100- 150 cm

4. 5-15°C and 100- 200 cm

Which of the following forest plants control the light conditions aground?

1. Lianas and climbers

2. Shrubs

3. Tall trees

4. Herbs

What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?

1. It will grow normally

2. It will grow well because it is planted in the same locality

3. It may not survive because of changes in its microclimate

4. It grows very well because the plant gets more sunlight

If a population of 50 Paramecium present in a pool increases to 150 after an hour, what would be the growth rate of the population?

1. 50 per hour

2. 200 per hour

3. 5 per hour

4. 100 per hour