Importance of Biodiversity

Q.

The term “the evil quartet” is related with four major causes of

1. Forest loss

2. Population explosion

3. Air pollution

4. Biodiversity losses

Q.

Why has India a rich heritage of flora and fauna?

Q. Degree of biodiversity increases from

1. Low altitude to high altitude
2. Equator to poles
3. Low latitude to high latitude
4. Poles to equator

Q. Assertion: Communities that comprise of more species tend to be more stable.

Reason: A higher number of species results in less animal variation in total biomass.

1. If both assertion and reason are true and reason is the correct explanation of assertion
2. If assertion is true but reason is false
3. If both assertion and reason are true but reason is not the correct explanation of assertion
4. If both assertion and reason are false

Q.

Mac Arthur observed that five closely related species of warblers living on the same tree were able to avoid competition and co-exist by behavioral differences. This is an example of Competitive release, Resource partitioning, Competitive exclusion principle, Adaptive radiation?

Q.

How is biodiversity important for ecosystem functioning?

Q. Assertion: Communities that comprise of more species tend to be more stable

Reason: A higher number of species results in less annual variation in total biomass

1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion
3. The assertion is true but the reason is false
4. Both assertion and reason are false

Q. Ecosystem productivity can be measured as a function of ___ and unit area.

1. Flora
2. Biomass
3. Consumers
4. Humidity

Q. [3]
(a) "India has greater ecosystem diversity than Norway." Do you agree with the statement ? Give reasons in support of your answer.

(b) Write the difference between genetic biodiversity and species biodiversity that exists at all the levels of biological organisation. .

Q. Read the following statements and identify the incorrect statement related to David Tilman's experiments on outdoor plots.

1. Stability of a community depends on its species richness
2. Greater diversity in community led to higher productivity
3. The experiments were performed in grassland ecosystems
4. Plots with more species showed more year to year variation in total biomass

Q. ______________ conducted long-term ecosystem experiments using outdoor plots.

1. Alexander von Humboldt
2. David Tilman
3. Robert May
4. Edward Wilson

Q. Mrs. Saalumarada Thimmakka is recognised for (correct answer + 1, wrong answer - 0.25)

1. ‘Appiko’ movement.
2. agitations against hydroelectric projects.
3. planting and conservation of avenue trees.
4. conservation of fauna and flora of the western ghats.

Q. How is 'stratification' represented in a forest ecosystem?

Q. The extinction of passenger pigeon was due to

1. habitat loss
2. over exploitation
3. bird flu virus infection
4. alien species invasion

Q. The name of Smt. Thimmakka is associated with the

1. planting and conservation of avenue trees
2. agitations against hydroelectric projects
3. ‘Appiko’ movement
4. conservation of fauna and flora of the western ghats

Q. On a logarithmic scale, the species area relationship is a straight line described by the equation log S = log C + Z log A.
What does S, C, Z and A represent in the given equation? Select the correct answer from the codes given below.
Species richness = 1
Slope of the line = 2
Y- intercept = 3
Area = 4

1. 1 - C; 2 - S; 3 - Z; 4 - A
2. 1 - S; 2 - Z; 3 - C; 4 - A
3. 1 - Z; 2 - S; 3 - C; 4 - A
4. 1 - A; 2 - C; 3 - S; 4 - Z

Q.

What is meant by wildlife and how is it important for us?

Q. What do you mean by standing crop and standing state?

Q. Select the correct statement about biodiversity.

1. The desert area of Rajasthan and Gujarat have very high level of desert animals.
2. Large scale planting of Bt cotton has no adverse effect on biodiversity.
3. Western Ghats have a very high degree of species richness and
   endemism.
4. Conservation of biodiversity is just a fad pursued by the developed countries.

Q.

Which of the following has highest number of species in nature?

1. ​​​​​​Fungi

2. ​​​​​​Insects

3. ​​​​​​Angiosperms

4. ​​​​​​Amphibians

Q. Write slogans in bio-diversity?

Q.

what is mean by net primary productivity

Q. Which of the following denote economic benefits of biodiversity?

1. Control of weeds and pests
2. Provision of food in the form of vegetables, fruits and meat
3. Provision of items including feathers, timber wood, glues and rubbers
4. Provision of important and medicinal herbs
5. Provision of oxygen as a byproduct of photosynthesis

Q. A highly diverse ecosystem churns out oxygen, organic macromolecules like glucose and a healthy amount of decaying matter with high efficiency. Which ecosystem product contributes directly to ecosystem productivity?

1. Oxygen
2. Glucose
3. Decaying matter
4. Carbon dioxide

Q. The term "the evil quarter" is related with four major causes of

1. Forest loss
2. Population explosion
3. Biodiversity losses.
4. Air pollution

Q. Assertion :All our insectivorous plants are on the verge of extinction. Reason: These plants are grown in green houses.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. All of these are reasons why biodiversity is important except

1. It allows for adjustment to disturbances .
2. It has led to medical discoveries.
3. It cleans water.
4. It provides food and materials.
5. It increases extinction rates.

Q. Tendency of increase of species diversity in transition zone between two community is called as

1. Ecotone effect
2. Edge effect
3. Border effect
4. Complementary effect

Q.

Q.2 Deepsha wants to do something to save biodiversity. Suggest her any two ways by which she can contribute. (Real life application)

Q. Vertical distribution of different species occupying different levels in dense vegetation is called.

1. Stratification
2. Species composition
3. Standing crop
4. Trophic structure