5. Parasitic flukes of vertebrates can devote most of their bodies to reproducti

Question

5. Parasitic flukes of vertebrates can devote most of their bodies to reproduction because they: have a well-developed digestive tract acquire all of their nutrients from their host have a highly-developed nervous system D have modified pneumatic air sacs for gas exchange 6. A member of the deuterostome group of animals: A is diploblastic does not have endoderm C)has an anus derived from the blastopore has a mouth derived from the blastopore protostomas X1 The lophophore: is found in ecdysozoans is used for gas exchange is a free-swimming ciliated larva is a feeding apparatus consisting of ciliated tentacles

Explanation / Answer

ANSWER 5 - Option B (accquire all of their nutrients from their host) is correct.

Ultimate moto of any living being is to reproduce and give birth to their young ones, so that their species continue to exist on earth. Any animal has two basic requirement i.e. food and shelter. After getting proper food and shelter, they can go for reproduction.

In case of fluke shelter is vertebrate body and as they are parasite, they derive all nutrition from host body. Body of flukes have organs that are specialised in deriving nutrion from their host, for example- sucker present on mouth. now they can devote most of their bodies to reproduction.

ANSWER 7 - Option D (is a feeding apparatus consisting of ciliated tentacles) is correct.

Lophophore consists of ciliated tentacles and it is attached on mouth of animal. Animal bearing lophophore are filter feeder. Lophophorates is a group of animals having lophophore as their feeding organ.

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