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
• B. 1,2 & 3
• C. 2,3 & 4
• D. All

Answer 1

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.