The most ecologically relevant environmental factor is:

1. Temperature

2. Water

3. Light

4. Soil

The plants which can withstand with narrow and broad range of temperature tolerance respectively are:

1. monothermal and stenothermal

2. stenothermal and monothermal

3. stenothermal and eurythermal

4. stenothermal and mesothermal

I. Organisms living in oceans, lakes, and rivers face water-related problems.
II. Euryhaline can tolerate a wide range of salinities
III. Stenohaline are restricted to a narrow range of salinities
IV. No freshwater animals cannot live for long in seawater but sea animals can live in freshwater for a long time because of osmotic balance
V. The salt concentration (measured as salinity in parts per thousand), is less than 5 in inland water, 30-35 in the sea, and >100 in some hypersaline lagoons.
(1) All are correct                     

(2) All are false

(3) Only IV is wrong                 

(4) Only I, III, V are correct

Which of the following is best suited with the abiotic factor temperature, playing role in changes in the physicochemical environment of different habitats?

1. The average temperature of land is approximately 50 throughout the year

2. The temperature of temperate countries is very much favorable for mango trees

3. Temperature affects the kinetics of enzyme and hence the basal metabolic activity of the body

4. Both 1 and 2

Formation of wide variety of habitats takes place by:-

1. Types of species inhabiting that area

2. Types of predation

3. Regional and local variation of environment conditions

4. All of the above 

Below is the diagrammatic representation of the response of organisms against temperature. Find out the correct match.

1. A-plants, B-birds

2. A-birds, B-mammals

3. C-mammals, B-plants

4. A-birds, B-plants

Which one of the following pairs is mismatched:

1. Savanna - acacia trees

2. Coniferous forest - evergreen trees

3. Tundra - permafrost

4. Prairie - epiphytes 

Acacia, Prosopis and Capparis belong to:
1.  Deciduous forest
2.  Tropical forest
3.  Thorn forest
4.  Evergreen forest

In which one of the following habitats does the diurnal temperature of the soil surface vary most?

1. Forest

2. Desert

3. Grassland

4. Shrubland