Explain blind sac body plan in animals.
Important Questions on Structural Organisation in Animals
A coelom (body cavity) derived from blastocoel is known
The coelom not lined by mesoderm and directly connected to the archenteron is found in
Observe the shown animals (A), (B), (C) and (D). Choose the correct answer with respect to a common characteristics of two of these animals.
Which of the following is not descriptive of deuterostomes?
| (i) | Diploblastic | Poriferans, Coelenterates |
|---|---|---|
| (ii) | Triploblastic | Platyhelminthes to Chordates |
| (iii) | Acoelomata | Poriferans, Coelenterates, Platyhelminthes |
| (iv) | Pseudocoelomata | Aschelminthes/Roundworms |
| (v) | Eucoelomata | Annelids to Chordates |
Coelom derived from blastocoel is known as
Enterocoelom appeared first in the course of evolution in
| Column I | Column II |
| A. Platyhelminthes | 1. Enterocoel |
| B. Nematoda | 2. No body cavity |
| C. Annelida | 3. Pseudocoel |
| D. Echinodermata | 4. Schizocoel |
Coelom is found between
Pseudocoelomate animals belong to the phylum
The animals in which coelom originates as a space in the mesoderm are termed as
The blind sac body plan is shown by
Body cavity is the cavity present between body wall and gut wall. In some animals the body cavity is not lined by mesoderm. Such animals are called
