Question

1. which of the following are organs or organ systems of a rotifer? select all that apply.

□ sensory organs
□ a rudimentary nervous system
□ a digestive tract
□ a respiratory system

Explanation:

Rotifers have sensory organs (like eyespots for light detection), a rudimentary nervous system (with a brain and nerve cords), and a complete digestive tract (with mouth, pharynx, stomach, etc.). They do not have a specialized respiratory system (gas exchange occurs by diffusion across the body surface).

Answer:

• sensory organs
• a rudimentary nervous system
• a digestive tract