Through resource partitioning:

(1) Two species can compete for the same prey

(2) Slight variation in niche allow closely related species to co-exist in the same habitat

(3) Competitive exclusion results in the success of the superior species

(4) Two species undergo character displacement that allows them to compete

The figure given below is a diagrammatic representation of response of organisms to abiotic factors. What do (i), (ii) and (iii) represent respectively?

When the value of 'r' is significantly low as compared to another species, it is better known by:

(1) Competition exclusion                   

(2) Interference competition

(3) Resource partition                        

(4) Competitive release

The four levels of biological organisation to which Ecology is basically concerned are:
A. Macromolecules-tissues-populations-biome
B. Macromolecules-organisms-population-biome
C. Tissues-organs-community-biome
D. Organisms-Populations-Community-Biome

Physiological ecology

1. works at organismic level
2. Tries to understand the adaptation with respect to survival only
3. Tries to understand the adaptation with respect to reproduction only
4. None of these

Wide variety of habitats within a biome can be a result of

1. Regional variation of temperature and precipitation.
2. Local variation of temperature and precipitation
3. Both A and B
4. Natural selection

Life exist in compost pits, permafrost polar regions. Our intestine host only 3-10 microbes. Major biomes of India include desert rainforest and tundra. The important physicochemical components alone chracterise different habitats.

How many of the above statements is/are wrong?

1. Three
2. Two
3. Only one
4. All four

The most ecologically relevant abiotic factor is

1. Water
2. Light
3. Temperature
4. Soil

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

1. Average temperature of land is approximately 50 throughout year
2. The temperature of temperate countries is very much favourable for mango trees
3. Temperature affects kinetics of enzyme and hence basal metabolic activity of the body
4. Both A and B

Aquatic organisms face problems when water quality gets disturbed. Here water quality includes

1. Chemical composition, temperature, pH
2. Chemical composition and pH
3. Only pH
4. pH and temperature