Question

The group Beroe and Neis is commonly called as
A. Beroids
B. Brain coral
C. Dead men's fingers
D. Venus's girdle

Answer 1

Hint: Beroidae is a genus of ctenophores or comb jellies that are more generally referred to as beroids. They are differentiated from other comb jellies by the complete absence of tentacles, both in juvenile and adult stages.

Complete answer: Nuda is a genus of Ctenophores, consisting of a single family, Beroidae, with two genera, Beroe and Neis. More commonly, this group is referred to as "beroids “. They are differentiated from other comb jellies by the complete absence of tentacles, both in juvenile and adult stages. Beroe is present in all the oceans and seas of the world, and then all beroids are free-swimmers which are members of the plankton.
Meandrina gyrosa is classified as a cerebral coral boulder. It is found in the Caribbean Sea and in the Gulf of Mexico. It is characterised by large, domed colonies that can be up to two metres in length. It is termed brain coral due to the presence of a meandering network of ridges and valleys on its surface.
Chalina is a known as dead man's finger. Chalina belongs to the Demospongiae class of Porifera phylum. Chalina is a soft-bodied marine sponge with a branched structure and protrusions all over the body. This arrangement gives a honeycomb-like appearance to it.
The Venus girdle, Cestum veneris, is a comb jelly found in the Cestidae family. It is the only member of its genus, that is, Cestum. Venus girdles appear like translucent ribbons with iridescent tips. This imperial beast is pelagic. It is found in the midwater environment in the tropical and subtropical oceans.
Therefore, choice A- Beroids is the correct answer.

Note: Beroids are sac-shaped and have no tentacles or anything, however they do possess a very large mouth, so they can seal very tightly. Jellyfish and comb jellies are just not very close relatives (being in different phyla—Cnidaria and Ctenophora, respectively) and have very different life storeys.