Author: Study Clue

In Platyhelminthes, which statement best explains why acoelomate condition limits body thickness A No excretory pores B Gills absent always

In Platyhelminthes, which tissue-filled condition replaces a true body cavity and supports organs A Fluid coelom space B Air-filled cavity

In flatworms, which feature most clearly shows body organization beyond tissue level A Only nerve net B No organ formation

In platyhelminths, which feature most strongly supports cephalization and directional movement A Bilateral symmetry B Radial body plan C Asymmetry

In Platyhelminthes, the body is flattened mainly in which direction A Side-to-side flattening B Dorsoventral flattening C Cylindrical round body

A cnidarian tissue called mesoglea is best described as lying between which two layers A Epidermis, mesoderm B Mesoderm, endoderm

A cnidarian shows tissue-grade organization mainly because it has A True tissues formed B True organs formed C True coelom

Which cnidarian trait best shows an incomplete digestive system with no separate anus A Two openings present B Many pores

Which single opening in cnidarians connects the outside directly to the gastrovascular cavity A Paired nostrils B Separate anus C

In cnidarians, which body plan shows a cylindrical form attached to a surface A Free-swimming umbrella B Segmented worm-like body