- 1(current)
Q. No.Triploblastic, bilaterally symmetrical animals with true coelom but no segmentation are:
| 1. | Aschelminthes | 2. | Molluscs |
| 3. | Annelids | 4. | Chordates |
Subtopic: Phylum Mollusca |
80%
From NCERT
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Identify the incorrect statement regarding Mollusca:
| 1. | It is the second largest animal Phylum after Phylum Arthropoda. |
| 2. | It includes animals that are bilaterally symmetrical, triploblastic, and coelomate. |
| 3. | Body is covered with a calcareous shell and is metamerically segmented with a distinct head, muscular foot, and visceral hump. |
| 4. | Gills are present in the mantle cavity, a space between the mantle and the hump. |
Subtopic: Phylum Mollusca |
75%
From NCERT
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How many of the given statements regarding Mollusca are true?
1. 1
2. 2
3. 3
4. 4
| I: | They are bilaterally symmetrical, triploblastic and coelomate animals. |
| II: | Body is covered by a calcareous shell and is segmented with a distinct head, muscular foot and visceral hump as metameres. |
| III: | A soft and spongy layer of skin forms a mantle over the visceral hump. |
| IV: | They are usually dioecious and oviparous with indirect development. |
2. 2
3. 3
4. 4
Subtopic: Phylum Mollusca |
57%
From NCERT
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Radula, a tongue rasping like organ, is characteristically seen in most:
| 1. | Annelids | 2. | Mollusca |
| 3. | Round worms | 4. | Arthropods |
Subtopic: Phylum Mollusca |
92%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Pinctada | Pearl Oyster |
| 2. | Aplysia | Sea hare |
| 3. | Dentalium | Tusk shell |
| 4. | Loligo | Devil fish |
Subtopic: Phylum Mollusca |
85%
From NCERT
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How many of the animals given in the box belong to Mollusca?
1. 4
2. 5
3. 6
4. 7
| Pila, Echinus, Pinctada, Sepia, Loligo, Cucumaria, Octopus, Limulus, Chaetopleura |
2. 5
3. 6
4. 7
Subtopic: Phylum Mollusca | Phylum Echinodermata |
59%
From NCERT
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If Arthropoda is the largest phylum of Animalia, which of the following is the second largest phylum of Animalia?
1. Chordata
2. Echinodermata
3. Mollusca
4. Platyhelminthes
1. Chordata
2. Echinodermata
3. Mollusca
4. Platyhelminthes
Subtopic: Phylum Mollusca |
98%
From NCERT
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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
Subtopic: Phylum Mollusca |
From NCERT
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- 1(current)
Q. No.
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