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Q. No.Which of the following statements is incorrect about the phylum Arthropoda?
1.
Arthropods have an open circulatory system.
2.
Arthropods exhibit bilateral symmetry.
3.
All arthropods possess jointed appendages.
4.
Arthropods possess a segmented body plan with a pseudocoelom.
Subtopic: Phylum Arthropoda |
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Which of the following characteristics is used as a basis for the classification of animals into different phyla?
1. Presence of feathers
2. Mode of reproduction
3. Type of respiratory system
4. Body plan and symmetry
1. Presence of feathers
2. Mode of reproduction
3. Type of respiratory system
4. Body plan and symmetry
Subtopic: Basis of Classification |
92%
From NCERT
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Consider the given two statements:
| Assertion (A): | Echinoderms are exclusively marine animals. |
| Reason (R): | Echinoderms have a water vascular system that functions in locomotion, feeding, and respiration. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Phylum Echinodermata |
77%
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Consider the given two statements:
| Assertion (A): | Cnidarians have a body plan based on a gastrovascular cavity. |
| Reason (R): | Cnidarians are diploblastic animals. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Phylum Coelenterata |
66%
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Consider the given two statements:
| Assertion (A): | The swim bladder is an essential organ for bony fishes. |
| Reason (R): | It allows them to maintain buoyancy without expending energy. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
93%
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Insects belong to the phylum Arthropoda. Their exoskeleton is primarily composed of:
1. Calcium carbonate
2. Chitin
3. Silica
4. Keratin
1. Calcium carbonate
2. Chitin
3. Silica
4. Keratin
Subtopic: Phylum Arthropoda |
94%
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Which statement correctly relates to body symmetry with examples in the animal kingdom?
| 1. | Radial symmetry is found in annelids, allowing them to move in any direction. |
| 2. | Bilateral symmetry is present in cnidarians like jellyfish. |
| 3. | Bilateral symmetry is characteristic of vertebrates like humans, allowing for directional movement. |
| 4. | Asymmetry is commonly seen in vertebrates, providing varied evolutionary advantages. |
Subtopic: Basis of Classification |
86%
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Match each item in column I with one in column II and select the correct match from the codes given below
Codes
| Column I | Column II | ||
| A. | Sycon | P. | Scypha |
| B. | Spongilla | Q. | Fresh water sponge |
| C. | Euspongia | R. | Both sponge |
Codes
| A | B | C | |
| 1. | P | Q | R |
| 2. | R | Q | P |
| 3. | P | R | Q |
| 4. | Q | P | R |
Subtopic: Phylum Porifera |
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Pleurobrachia and Ctenoplana belong to:
1. Porifera
2. Cnidaria
3. Ctenophora
4. Platyhelminthes
1. Porifera
2. Cnidaria
3. Ctenophora
4. Platyhelminthes
Subtopic: Phylum Ctenophora & Platyhelminthes |
92%
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Fasciola is
1. a nematode
2. liver fluke
3. blood sucking leech
4. a model organism to study genetics
1. a nematode
2. liver fluke
3. blood sucking leech
4. a model organism to study genetics
Subtopic: Phylum Ctenophora & Platyhelminthes |
87%
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