Ecological Balance and Food Chains Quiz

What is the primary role of predatorial species in an ecosystem?

• To increase the number of prey species

• To create more food sources

• To maintain ecological balance

• To eliminate all herbivores

What happens if there are more herbivores than plant food?

• Herbivores will thrive indefinitely

• They will eat all the vegetation

• They will reproduce at a slower rate

• They will migrate to other areas

Which level of the trophic pyramid has the least biomass?

• Tertiary Consumers

• Secondary Consumers

• Primary Consumers

• Primary Producers

What is the primary source of energy in a food chain?

• Decomposers

• Plants and algae

• Herbivores

• Carnivores

Which of the following is a characteristic of tertiary consumers?

• They have no natural predators

• They are herbivores

• They are at the top of the food chain

• They primarily eat plants

What is biomass?

• The amount of food available

• The total energy in an ecosystem

• The total mass of living matter

• The number of species in a habitat

Which animal is mentioned as being in danger of extinction due to human activity?

• Small-spotted genet

• Wolf

• Geoffroy's cat

• Cheetah

What do primary consumers depend on for subsistence?

• Scavengers

• Decomposers

• Plants or algae

• Other carnivores

Which of the following animals is a scavenger?

• Gazelle

• Lion

• Hyena

• Cheetah

What is the consequence of having too many carnivores in an ecosystem?

• Herbivore population decreases

• Herbivore population increases

• Herbivores will thrive

• Plant life will flourish