An Aquatic Ecosystem That May Include Protists and Bacteria as Producers

question 60

Multiple Choice

An aquatic ecosystem that may include protists and bacteria as producers in a well-lit zone and detritus feeders in a deeper dark zone is a(n) ____.​

• A) ​estuary
• B) ​stream
• C) ​lake
• D) ​coral reef
• E) ​hydrothermal vent

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Definitions:

Gland

An organ in the body that secretes particular chemical substances for use in the body or for discharge into the surroundings.

Neurotransmitter

Chemicals in the nervous system that transmit signals across a synapse from one neuron to another, influencing mental processes and behavior.

Hypothalamus

A small region of the brain responsible for regulating physiological processes such as temperature regulation, hunger, thirst, and sleep cycles.

Hormones

Biochemical substances produced by glands in the endocrine system that regulate physiological activities by traveling through the bloodstream to target organs.