The Nerve Net of Hydra

question 51

Multiple Choice

The nerve net of Hydra:

• A) contains a central control organ and connected neurons.
• B) sends electrical signals in only one direction.
• C) allows the organism to respond to stimuli approaching from any direction.
• D) produces a signal that intensifies as it radiates from its point of origin.
• E) cannot coordinate the movement of all tentacles at once.

---

Definitions:

Camera Eye

An eye type that possesses a lens for focusing light on the retina, similar to the operational principle of a camera, found in humans and other animals.

Regulatory Mutations

Genetic mutations that affect the regulation of gene expression, potentially leading to changes in the timing, location, and amount of gene product being produced.

Adaptation

The process by which an organism becomes better suited to its environment, often through changes in its traits.