Choose the correct statement.

Correct option is D

The correct answer is: (d) Heterotrophs’ survival depends directly or indirectly on autotrophs
Explanation:
· Autotrophs (like green plants) prepare their own food via photosynthesis.
· Heterotrophs (like humans and animals) depend on autotrophs for energy, directly or through food chains.
· Energy transfer in ecosystems always starts with autotrophs as producers.
Information Booster:
· Autotrophs = Producers (e.g., plants, algae)
· Heterotrophs = Consumers (e.g., humans, fungi, animals)
· Food chains begin with autotrophs
· Autotrophs convert solar energy → chemical energy
· All animals are heterotrophs
· Most bacteria are heterotrophs; some are autotrophic (e.g., cyanobacteria)