First slide

Organism and its Environment

Question

Food chains are typically short in Tundra because

Moderate

A

the region has high biodiversity due to its proximity to the equator.
B

primary production is lower than in most other ecosystems.
C

secondary productivity is higher compared to any other ecosystems.
D

the productivity remains constant without any annual variations.

Solution

Food chains are typically short in the tundra because primary production is lower than in most other ecosystems.
The length of a food chain is limited by the inefficiency of energy transfer along the chain. Another factor that may limit food chain length is that carnivores in a food chain tend to be larger at successive trophic levels.

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