A Pond Ecosystem Includes Small Water Fleas Which Feed on Submerged

question 10

Multiple Choice

A pond ecosystem includes small water fleas which feed on submerged aquatic plants. When the water fleas die, they sink to the bottom of the pond where their dead bodies are broken downwith the help of bacteria. List in order the producer, decomposer, and consumer in this system.

• A) water fleas, bacteria, aquatic plants
• B) aquatic plants, water fleas, bacteria
• C) bacteria, water fleas, aquatic plants
• D) aquatic plants, bacteria, water fleas
• E) bacteria, aquatic plants, water fleas

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Definitions:

Gonads

The primary reproductive organs in animals that produce gametes; in males, they are the testes, and in females, the ovaries.

Thyroid

A gland located in the neck that produces hormones regulating the body's metabolic rate as well as heart and digestive function, muscle control, brain development, and bone maintenance.

Thalamus

A structure in the brain that relays motor and sensory signals to the cerebral cortex.

Pituitary

A small gland at the base of the brain that produces hormones which regulate growth and the function of other glands in the body.