The below statements are regarding phylum aschelminthes :
1). They are bilaterally symmetrical and triploblastic
3). All are parasitic.
Select the correct answer having a pair of correct characters
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.