Question

Sponges produce structures called gemmules, which are hard outer coatings protecting a reproductive bud during times of drought. What type of adaptation is this?
a.
Biochemical
b.
Ecological
c.
Structural
d.
Physiological

Answer 1

The production of gemmules by sponges, which provides protection for reproductive buds during drought conditions, is an example of a **structural adaptation**. This is because the gemmules have a physical form (the hard outer coating) that enhances the sponge's ability to survive in challenging environmental conditions.

So, the answer is:
**c. Structural**