MEDIUM
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Identify the correct statement regarding above diagrams.

(a)All these animals are aquatic, free living.
(b)All are true coelomates.
(c)"A" has radial symmetry but remaining have bilateral symmetry.
(d)A is monoecious but remaining are dioecious

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Important Questions on Animal Kingdom
EASY
Match the following and choose correct combination.
Column I | Column II | ||
i) | Cellular grade level | a) | Pheretima |
ii) | Tissue grade level | b) | Schistosoma |
iii) | Organ level | c) | Obelia |
iv) | Organ system level | d) | Sycon |

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Consider following features:
- Organ system level of organisation
- Bilateral symmetry
- True coelomates with segmentation of body.
Select the correct option of animal group which possess all the above characteristics:

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Match the following
List - I | List - II | ||
(a) | Asymmetry | (i) | Cnidaria |
(b) | Radial symmetry | (ii) | Platyhelminthes |
(c) | Bilateral symmetry and Enterocoelom | (iii) | Porifera |
(d) | Bilateral symmetry without body cavity | (iv) | Hemichordata |
The correct answer is

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Which of the following phyla possess body cavity as shown in the diagram below?

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Column-I | Column-II | ||
P | Mollusca | i | Pseudocoelom |
Q | Annelida | ii | Radula |
R | Nematoda | iii | Radial symmetry |
S | Echinodermata | iv | Segmentation |
Choose the CORRECT combination.

MEDIUM
Match the following.
Sub Division | Character | Example | |||
Acoelomata | Coelom is formed by archenteron | Mollusca | |||
Pseudocoelomata | Without a body cavity | Hemichordata | |||
Schizocoelomata | Body cavity should not lined by mesodermal layers | Nematoda | |||
Enterocoelomate | Coelom is formed by splitting of mesoderm | Platyhelminthes |

MEDIUM
Identify the correct statement with reference to 'Enterocoelomates'.
A Body cavity is formed from endodermal pouches
B. They display determinate type of cleavage
C. Enterocoelomates are deuterostomes
D. Hemichordates are enterocoelomates

