Ecology Answers

What happens to air over the high Arctic?

Question 4 options:

it cools, rises, and moves southward at ground level

it cools , sinks, and moves southward at high altitude

it warms, rises, and moves southward at ground level

it warms, sinks and moves southward at high altitude

What type of population does a density-dependent limiting factor affect?

Write short notes on:

i) The Competitive Exclusion Principle 

ii) Population density

iii) Measures to control global warming 

iv) Depleted species

v) Use of the Red Data Book

Give the main difference and one example each of the following:

i) Ecosystem and biosphere 

ii) Keystone species and dominant species

iii) Gross primary production and net primary production

iv) Interspecific and intraspecific interactions

Describe the different types of forests. Mention the importance of forests 

in maintaining the ecological balance of the global ecosystem. (10)

Make clear and labelled diagrams of the various stages of hydrarch or xerarch

succession. (10)

How does the wildlife get affected by the degradation of the ecosystem due to 

various causes? Also give measures for the conservation of the wildlife. 

(5+5)

Write the characteristic features of a terrestrial or an aquatic ecosystem. (10)

List the analytic and synthetic characters of a biological community. Explain 

in one or two lines the information provided by each character about the 

community. (10)

Describe the ecological adaptations in plants and animals when there is 

scarcity or abundance of water with labeled diagrams. (10)