The Respiratory System of an Ectoproct Involves

question 6

Multiple Choice

The respiratory system of an ectoproct involves

• A)tracheae.
• B)gills that form another layer under the tentacles.
• C)amebocytes loaded with hemoglobin pigment.
• D)circulation of water by opening and closing the epistome.
• E)no system at all,merely diffusion across the body surface.

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Definitions:

Tabula Rasa

Tabula rasa is a philosophical concept suggesting that the human mind starts as a blank slate, with knowledge and character formed through experience.

Proximal Stimulus

The physical energy from a stimulus as it directly interacts with sensory receptors.

Retinal Image

The visual picture formed on the retina, the light-sensitive surface at the back of the eye, enabling sight.

Optic Nerve

A cranial nerve that transmits visual information from the retina to the brain.