Biology 9th Chap 6 : Topic 1 - Maryam Publications

Biology Chapter 6 : Topic 1

Biodiversity and Classification

1 / 15

What is biodiversity?

A) Process of naming organisms

B) Grouping of organisms into categories

C) Study of living organisms only

D) Variety of life forms present on Earth

2 / 15

Which statement best defines classification?

A) Study of ecosystems

B) Identification of diseases in organisms

C) Counting the number of organisms in an area

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

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Which of the following is an example of biodiversity?

A) A laboratory culture of one bacterial species

B) A forest containing many plant and animal species

C) A cage containing identical rabbits

D) A field growing only one crop species

4 / 15

Why is classification important in biology?

A) It helps scientists study and identify organisms systematically.

B) It increases the number of species.

C) It prevents organisms from evolving.

D) It reduces biodiversity.

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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) Placed in different kingdoms only

C) Unrelated to each other

D) Grouped together in similar categories

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Biodiversity mainly refers to variation among:

A) Rocks and minerals

B) Living organisms

C) Water bodies only

D) Atmospheric gases

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Which situation indicates low biodiversity?

A) Many species living in a rainforest

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

C) A coral reef with numerous marine organisms

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

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What is the primary purpose of biological classification?

A) To prevent discovery of new organisms

B) To arrange organisms into meaningful groups

C) To increase populations of organisms

D) To eliminate rare species

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Which characteristic is most useful in classifying organisms?

A) Age of the organism

B) Geographic location only

C) Color of surroundings

D) Similar structural and functional features

10 / 15

Which branch of biology deals with classification of organisms?

A) Taxonomy

B) Physiology

C) Genetics

D) Embryology

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Biodiversity contributes most directly to:

A) Elimination of species interactions

B) Reduction in adaptation

C) Stability of ecosystems

D) Decrease in food sources

12 / 15

Which statement about biodiversity is correct?

A) It excludes microorganisms.

B) It includes only plant species.

C) It includes only animal species.

D) It includes all forms of life.

13 / 15

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

A) Classification based on its characteristics

B) Immediate placement in a zoo

C) Genetic modification

D) Extinction assessment

14 / 15

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

A) Organisms with different body structures

B) Organisms living in different habitats only

C) Organisms with many common characteristics

D) Organisms from different kingdoms

15 / 15

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

A) Increases species diversity

B) Prevents evolution

C) Simplifies the study of organisms

D) Creates new species

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