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Q. No.A radula is present in many members of the phylum:
1.
Mollusca
2.
Arthropoda
3.
Annelida
4.
Echinodermata
Subtopic: Phylum Mollusca |
96%
From NCERT
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The given figure is from your textbook and shows the classification of organisms with true coelom into various phyla. What would be peculiar for organisms shown by an * mark?
| 1. | They are the only organisms to possess an endoskeleton. |
| 2. | They exhibit radial or bilateral symmetry depending on the stage. |
| 3. | They are the only animals exclusively inhabiting marine water. |
| 4. | Bioluminescence is well marked in these animals. |
Subtopic: Basis of Classification |
89%
From NCERT
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The given figure shows a/an:
| 1. | rag worm, an annelid |
| 2. | round worm, a nematode |
| 3. | flat worm, a platyhelminth |
| 4. | acorn worm, a hemichordate |
Subtopic: Phylum Hemichordata |
64%
From NCERT
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Anopheles, Culex and Aedes are:
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are incorrect
4. Only II and IV are incorrect
| I: | important vectors for some human pathogens. |
| II: | mosquitoes belonging to Arthropoda. |
| III: | arthropods with closed circulatory system. |
| IV: | arthropods lacking jointed appendages. |
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are incorrect
4. Only II and IV are incorrect
Subtopic: Phylum Arthropoda |
91%
From NCERT
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The number of animals having bilateral symmetry and a true coelom from the list given in the box will be:
1. 4
2. 5
3. 6
4. 7
| Fasciola, Pila, Chaetopleura, Ancylostoma, Saccoglossus, Meandrina, Hirudinaria, Labeo, Ichthyophis |
1. 4
2. 5
3. 6
4. 7
Subtopic: Basis of Classification |
51%
From NCERT
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Identify the option where all the animals given in Column I share the characters given in Column II:
| Column I | Column II | |
| 1. | Ancylostoma, Taenia | Pseudocoelom, Bilateral symmetry |
| 2. | Delphinus, Camelus | Mammary glands, Hair |
| 3. | Octopus, Dentalium | Closed circulation, segmented body |
| 4. | Obelia, Hydra | Metagenesis, Diploblastic |
Subtopic: Basis of Classification:I |
61%
From NCERT
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You discover an organism and observe that it shows the presence of the following characteristics:
You conclude that this must be an arthropod but want to get more confident by observing another feature. Which of the following, if present, will strengthen your argument?
| A: | Bilateral symmetry |
| B: | Body covered with a plate like exoskeleton |
| C: | Legs with joints and wings |
You conclude that this must be an arthropod but want to get more confident by observing another feature. Which of the following, if present, will strengthen your argument?
| 1. | Closed circulation |
| 2. | Lack of a true coelom |
| 3. | Ammonotelic excretion |
| 4. | Body divided into head, thorax and abdomen segments |
Subtopic: Phylum Arthropoda | Basis of Classification |
93%
From NCERT
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The correct statements regarding cyclostomes will be:
1. Only (a) and (b)
2. Only (b) and (c)
3. Only (a) and (d)
4. Only (c) and (d)
| (a) | All living members of the class Cyclostomata are endoparasites in mammals. |
| (b) | Cyclostomes have a sucking and circular mouth without jaws. |
| (c) | Their body is devoid of scales and paired fins. |
| (d) | Cranium and vertebral column are bony. |
2. Only (b) and (c)
3. Only (a) and (d)
4. Only (c) and (d)
Subtopic: General Introduction: Vertebrates & Agnatha |
89%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Hemichordates | Worm like with proboscis, collar and trunk |
| 2. | Mollusca | External skeleton of shell usually present |
| 3. | Porifera | Body with pores and canals in walls |
| 4. | Arthropoda | Exoskeleton of cellulose and jointed appendages |
Subtopic: Phylum Arthropoda |
87%
From NCERT
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Tissue level of body organization and absence of organ systems is seen in:
1. Cnidaria and Ctenophora
2. Porifera and Cnidaria
3. Aschelminthes and Porifera
4. Echinodermata and Chordata
1. Cnidaria and Ctenophora
2. Porifera and Cnidaria
3. Aschelminthes and Porifera
4. Echinodermata and Chordata
Subtopic: Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes | Basis of Classification |
88%
From NCERT
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