Author: Study Clue

In Pheretima posthuma, the clitellum is present as a thick glandular band on which segment range A Segments 1–3 B

In annelids, the true coelom is formed by splitting of mesoderm called A Enterocoely method B Budding process C Fragmentation

In annelids, true segmentation includes repetition of organs mainly in A Only head region B Only tail end C Only

In annelids, the repeated body units are separated internally mainly by A Germ layers B Septa partitions C Shell plates

Annelids are mainly identified by which body feature A Jointed appendages B Radial symmetry C Metameric segmentation D Siliceous spicules

The pseudocoelom of nematodes is best interpreted embryologically as A Persistent blastocoel B True coelom cavity C Split mesoderm cavity

In nematodes, the pseudocoel fluid mainly helps in internal transport because it A Acts like blood B Has red cells

The “pseudocoel” of nematodes is correctly described as a cavity A Not fully lined B Fully mesoderm lined C With

The term “Nematoda” mainly reflects the animal’s typical body form as A Ringed segments B Thread-like body C Leaf-like flat

Nemathelminthes are called pseudocoelomates because their body cavity is A True coelom lined B No cavity present C Fluid-filled pseudocoel