Which Group of Animals Has a Respiratory System That Involves

question 81

Multiple Choice

Which group of animals has a respiratory system that involves countercurrent exchange?

• A) Mammals
• B) Sponges
• C) Reptiles
• D) Insects
• E) Fish

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Definitions:

Blastula

The blastula is an early stage of embryonic development in animals, characterized by a hollow sphere of cells following the morula stage.

Cytoplasm

The jelly-like material within a cell, excluding the nucleus, containing organelles and involved in cellular processes.

Chromosomes

Chromosomes are long, thread-like structures made of DNA and proteins, contained in the nucleus of cells, which carry genetic information.

Mitochondria

Mitochondria are organelles within cells that produce energy through the process of oxidative phosphorylation, often referred to as the "powerhouses" of the cell.