AGRI 412 REMEDIAL EXAMINATION

What term best describes an organism’s role in its environment?

• Habitat

• Niche

• Community

• Ecosystem

Which of the following best describes a herbivore?

• Feeds on plants

• Feeds on animals

• Feeds on dead organisms

• Feeds on both plants and animals

A frog’s diet changes from algae to insects as it matures. What does this represent?

• Food chain

• Abiotic factor

• Symbiosis

• Niche change

Why is each organism’s niche important to the ecosystem?

• It reduces biodiversity

• It maintains ecological balance

• It limits species interactions

• It prevents energy flow

The heron feeds on fish, while the cicada feeds on plant juice. What does this show?

• Habitat difference

• Predator-prey relationship

• Niche differentiation

• Energy imbalance

Ecology is best defined as the study of:

• Evolution of species

• Classification of living things

• Energy conversion

• Relationships between organisms and environment

Which of the following is a biotic factor?

• Water

• Soil

• Sunlight

• Fungi

The main producers in an ecosystem are:

• Animals

• Fungi

• Plants

• Bacteria

What would likely happen if sunlight were removed from an ecosystem?

• Producers would die

• Fungi would increase

• Consumers would multiply

• Decomposers would stop feeding

Which abiotic factor most directly affects photosynthesis?

• Air

• Sunlight

• Soil

• Temperature