Importance of photosynthesis — task. Biology CBSE Live product, Class 7 (2025-26).

Identify all accurate options.

1. Why is photosynthesis considered the foundation of all food chains on Earth?

It provides oxygen for respiration.
It supports both autotrophs and heterotrophs directly or indirectly.
It absorbs nitrogen from the air for animals.
It removes carbon dioxide from the environment.
It produces glucose, the base food source for all living organisms.

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