SSC MTS EXAM

SSC

BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the function of autotrophs in the carbon cycle?
A
to use oxygen to produce glucose
B
to take in excess water
C
to use carbon dioxide to produce glucose
D
to feed on herbivores
Explanation: 

Detailed explanation-1: -In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose. Glucose is a type of sugar. The glucose gives plants energy. Plants also use glucose to make cellulose, a substance they use to grow and build cell walls.

Detailed explanation-2: -Autotrophs are organisms that produce new biomass from inorganic resources (carbon dioxide and mineral nutrients), using either light energy (photoautotrophs) or energy from reduced molecules in the environment (chemoautotrophs).

Detailed explanation-3: -This process is called photosynthesis, while heterotrophic organisms use these molecules produced by autotrophs to produce their energy. Autotrophs utilize carbon dioxide produced by heterotrophs to produce glucose for their energy and release oxygen to be used by heterotrophs.

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