Question

What word most accurately describes roundworms?
A Predatory
B Sessile
C Asymmetric
D Common

Answer 1

A) Predatory

Explanation:

• Roundworms is part of the "phylum Nematoda". They have a "hydrostatic  skeleton" & "pseudocoelom". Their body is "encompassed" with "tough cuticle".
• "Free-living roundworms" inhabit "freshwater &  marine" environments. Parasitic roundworms usually "live off their hosts' & have several hosts, including "humans".
• Roundworms are "cylindrical unsegmented" worms & have "bilateral symmetry" (mouth area, jaws, spines & other structures). Most free living roundworms are predatory
• Several  free-living (round worm) "nematodes" are "predatory carnivores" that may have "feeding teeth" or a "spearlike", long,  structure to "suck/stab" their juices from their prey.
• Roundworms feed on living and dead organic matter like small animals/ diatoms, bacteria, algae, & fungi, including other worms. Some "eat plants" by piercing  the root/stem & the contents are sucked out .

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Explain the features of round worms -

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