In a typical mollusc:
I: | Head, muscular foot and visceral hump are body segments. |
II: | Mantle over the visceral hump is formed by a layer of skin. |
III: | Radula is a file-like rasping organ |
1. Only III is correct
2. Only II and III are correct
3. Only I and III are correct
4. Only I and II are correct
1. | Aschelminthes | 2. | Molluscs |
3. | Annelids | 4. | Chordates |
Statement I: | Sponges exhibit a cellular level of organization. |
Statement II: | Cnidarians have a tissue level of organization. |
1. | An open circulatory system | 2. | A closed circulatory system |
3. | A lymphatic system | 4. | A portal circulation |
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. |
1. | Ectoderm | 2. | Mesoderm |
3. | Endoderm | 4. | Gastroderm |
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 |
I: | The body is divided into segments only externally. |
II: | There is a serial repetition of at least some organs. |
I: | is derived from embryonic mesoderm. |
II: | is present on the ventral side during embryonic development in chordates. |
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 |