Which of the following accounts for the formation of major biomes?

• Annual variations in intensity of temperature

• Annual variations in intensity and duration of temperature

• Annual variation in precipitation

• b and c

Basic unit of ecological hierarchy is –

• Ecosystem

• Community

• Population

• Individual

A regional ecological unit having a specific climate is –

• Biome

• Landscape

• Ecosystem

• Biotic community

Major biomes of India include –

• Tropical rain forest

• Deciduous forest

• Desert and sea coast

• All

What are the key elements that lead to so much variation in the physical and chemical conditions of different habitats?

• Temperature and light

• Soil and water

• Only soil

• Temperature, light, soil and water

False statement is –

• habitat includes both biotic and abiotic factors

• Ecology at the organismic level is essential physiological ecology

• Abiotic and biotic components interact constantly with each other

• None of the above

Which of the following is the most ecologically relevant environmental factor?

• Water

• Light

• Temperature

• Soil

Select the false statement –

• Average temperature on land varies seasonally

• Temperature progressively decreases from pole to equator

• Temperature progressively decreases from plains to mountain tops

• Our intestine is a unique habitat for hundreds of species of microbes

I. Mango trees cannot grow in temperate countries like Canada and Germany

II. Snow leopards are not found in Kerala.

III. Tuna fish are rarely caught beyond tropical latitude in the ocean.

IV. Average temperature exceeds 100oC in thermal springs and hydrothermal vents.

V. In polar areas and high altitudes temperature goes to 70oC.

VI. Temperature goes to > 50oC in tropical desert in summer.

Which of the above statements are false?

• I only

• II and III only

• V only

• V and VI only

A few organisms can tolerate and thrive a wide range of temperature. Such animals are called ___________. A vast majority of animals are restricted to a narrow range of temperature. Such animals are called __________.

• Eurythermal, stenothermal

• Stenothermal, eurythermal

• Thermoscopic, Unthermoscopic

• Thermophobic, thermophilic