Which of the following is not a parasitic flatworm?

planarian

tapeworm

flukes

none of the above

Parasitic flatworms are majorly the members of phylum Platyhelminthes. Parasitic flatworms are generally triploblastic, symmetrical, and lack anus.

The planarian is a flatworm but is not a parasitic worm.

The parasitic flatworms are:

Thus, the correct answer is Option A.

To know more about flatworms, refer to the following link:

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.