Biology 9th Chap 6 : Topic 1 - Maryam Publications

Biology Chapter 6 : Topic 1

Biodiversity and Classification

1 / 15

What is biodiversity?

A) Study of living organisms only

B) Grouping of organisms into categories

C) Variety of life forms present on Earth

D) Process of naming organisms

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Which statement best defines classification?

A) Counting the number of organisms in an area

B) Study of ecosystems

C) Arrangement of organisms into groups based on similarities and differences

D) Identification of diseases in organisms

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Which of the following is an example of biodiversity?

A) A cage containing identical rabbits

B) A laboratory culture of one bacterial species

C) A field growing only one crop species

D) A forest containing many plant and animal species

4 / 15

Why is classification important in biology?

A) It helps scientists study and identify organisms systematically.

B) It reduces biodiversity.

C) It increases the number of species.

D) It prevents organisms from evolving.

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A student finds two organisms with many common features. According to classification principles, these organisms are likely:

A) Considered extinct

B) Unrelated to each other

C) Placed in different kingdoms only

D) Grouped together in similar categories

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Biodiversity mainly refers to variation among:

A) Water bodies only

B) Rocks and minerals

C) Living organisms

D) Atmospheric gases

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Which situation indicates low biodiversity?

A) Many species living in a rainforest

B) A coral reef with numerous marine organisms

C) A farm growing only one crop species over a large area

D) A pond containing various fish, insects, and plants

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What is the primary purpose of biological classification?

A) To arrange organisms into meaningful groups

B) To increase populations of organisms

C) To eliminate rare species

D) To prevent discovery of new organisms

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Which characteristic is most useful in classifying organisms?

A) Age of the organism

B) Color of surroundings

C) Similar structural and functional features

D) Geographic location only

10 / 15

Which branch of biology deals with classification of organisms?

A) Taxonomy

B) Genetics

C) Embryology

D) Physiology

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Biodiversity contributes most directly to:

A) Stability of ecosystems

B) Decrease in food sources

C) Elimination of species interactions

D) Reduction in adaptation

12 / 15

Which statement about biodiversity is correct?

A) It includes all forms of life.

B) It excludes microorganisms.

C) It includes only animal species.

D) It includes only plant species.

13 / 15

If scientists discover a new organism, what is usually done first?

A) Immediate placement in a zoo

B) Classification based on its characteristics

C) Extinction assessment

D) Genetic modification

14 / 15

Which pair of organisms is most likely to be placed in the same group?

A) Organisms with many common characteristics

B) Organisms from different kingdoms

C) Organisms with different body structures

D) Organisms living in different habitats only

15 / 15

The vast number of living organisms makes classification necessary because it:

A) Increases species diversity

B) Simplifies the study of organisms

C) Prevents evolution

D) Creates new species

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