Question

click load and play the video.
observe sample f in the interactive.
here you have an organism called a ophryidium (long and green) being disturbed by surrounding paramecium.
select an option below that describes what you observe.
i need a hint
the ophryidium is making more cells as it changes size.
the ophryidium does not change as other organisms interact with it.
the ophryidium quickly changes size when disrupted by other organisms.

Explanation:

Ophrydium (a type of colonial alga) forms a sessile colony that does not alter its form or interact with paramecia in the described ways of growing new cells, being eaten, or rapidly changing size when disturbed. It remains stable as other organisms interact around it.

Answer:

The Ophrydium does not change as other organisms interact with it.