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Question

The below statements are regarding phylum aschelminthes :

1). They are bilaterally symmetrical and triploblastic

2). Dioecious

3). All are parasitic.

4). Pseudocoelomate

Select the correct answer having a pair of correct characters


A

1,2 & 4

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B

1,2 & 3

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C

2,3 & 4

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D

All

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Solution

The correct option is A

1,2 & 4


Phylum aschelminthes has animals which are bilaterally symmetrical, triploblastic and dioecious. But not all of them are parasitic. Free-living nematodes (the most familiar group in this phylum) are extremely abundant in soils and sediments, where they feed on bacteria and detritus.


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