I. | Platyhelminthes | II. | Mollusca | III. | Annelida |
1. | Only I | 2. | Only II |
3. | Only II and III | 4. | I, II, and III |
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1. | An open circulatory system | 2. | A closed circulatory system |
3. | A lymphatic system | 4. | A portal circulation |
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I: | Bilateral symmetry is the body plan where the body of the animal can be divided into two identical halves through any plane passing through the central axis of the body. |
II: | While Ctenophores and adult Echinoderms have bilateral symmetry, Annelida and Arthropods have radial symmetry. |
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1. | Bilateral symmetry | 2. | Three embryonic layers |
3. | Incomplete digestive system | 4. | Coelom |
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1. | Ectoderm | 2. | Mesoderm |
3. | Endoderm | 4. | Gastroderm |
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Consider the given features:
A: | Body cavity lined by mesoderm |
B: | The mesoderm present as scattered pouches in between the ectoderm and the endoderm |
Select the correct option of animals having the features A and B:
A | B | |
1. | Aschelminthes | Annelids |
2. | Platyhelminthes | Ctenophores |
3. | Arthropods | Molluscs |
4. | Arthropods | Aschelminthes |
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The given figure shows broad classification of Kingdom Animalia based on common fundamental features. Which of the following can be true based on the information given in the figure?
a.Sponges represent ‘A’
b.‘B’ includes flatworms
c.Animals in ‘C’ are triploblastic
d.Radial symmetry is seen in adults of animals in ‘D’
e.Animals in ‘E’ have a complete digestive system
1.only a, c and e | 2.only a, b and e |
3.only b and d | 4.only a, c and d |
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1. | Choanocyte and helps sponges in movement of water through their canal system |
2. | Choanocyte and helps sponges in reproducing asexually under favourable conditions |
3. | Cnidocyte and helps sponges in catching their prey by paralyzing them |
4. | Colloblast and helps sponges in sticking to a surface |