Answer:
The beating or fanning movements of three pairs of maxilliped flagella in crabs and crayfish modify exhalent gill currents while drawing water over chemoreceptors on the head. They play an integral part both in signalling by distributing urine odours, and in active chemosensation.
Explanation:
A. <span>A flatworm doesn't have a coelom
Flatworms and other invertebrates belong to a specific group called </span><span>acoelomate, wherein they lack a coelom and has an internal cavity which serves as their digestive cavity.</span>
Answer:
Organisms compete for shelter
Explanation:
Just took the test and answered this
<span>D) composed of one or more eukaryotic cells</span>
In photosynthesis experiment, the effect of the light will be observe during the starch production- thus you need to have a plant without a starch to observe if the starch is produced during photosynthesis. Letting the leaves of the plant deprived from light for 48 hours will be forced to use its reserved starch making the storage of the starch decrease.
