Question

Which of the following belongs to abiotic components of environment?

• A. Air, water, light
• B. Plants
• C. Plants and animals
• D. Plants, animals and microorganisms

Answer 1

The correct option is A

Air, water, light

The correct option A:

Explanation for the correct option:

Abiotic components of biosphere are inorganic substances, organic components, and climatic factors.

1. Inorganic substances – includes oxygen, carbon dioxide, nitrogen, water etc.
2. Organic components- proteins, fats and carbohydrates. This link abiotic components with biotic components.
3. Climatic factors – are of two types:

1. Atmosphere – which includes temperature, light and rainfall
2. Edaphic factors - includes soil.

Explanation for incorrect options:

The three biotic components of an ecosystem are autotrophs, heterotrophs and decomposers.

Autotrophs –

1. Produce their own food by using sunlight by the process of photosynthesis.
2. Example - plants, green algae.

Heterotrophs –

1. These organisms depends on producers for their food.
2. Example – humans

Decomposers –

1. Consume, decompose dead and decaying matter.
2. Example – hawk.

Thus, Air, water, light belongs to abiotic components of environment.