Ecology

Question 1 of 10

Eutrophication of a lake is caused mainly by

Question 2 of 10

In the food chain grass → grasshopper → lizard → hawk, the secondary consumer is the

Question 3 of 10

In a food chain, green plants are the

Question 4 of 10

The carrying capacity of an environment is

Question 5 of 10

The relationship between Rhizobium bacteria and leguminous plants is

Question 6 of 10

The tapeworm in the human gut is an example of a

Question 7 of 10

The relationship in which both organisms benefit is

Question 8 of 10

In a predator–prey cycle, predator numbers usually peak

Question 9 of 10

Only about 10% of energy passes to the next trophic level. If producers fix 10,000 kJ, energy reaching secondary consumers is about

Question 10 of 10

A relationship in which both organisms benefit is