Radial symmetry is not found in adults of phylum__________
1.
Echinodermata D
2.
Ctenophora
3.
Hemichordata
4.
Coelenterata
Subtopic: Â Phylum Hemichordata |
 63%
Level 2: 60%+
NEET - 2023
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Select the correct statements with reference to chordates.
Choose the correct answer from the options given below:
| A: | Presence of a mid-dorsal, solid and double nerve cord. |
| B: | Presence of closed circulatory system. |
| C: | Presence of paired pharyngeal gill slits |
| D: | Presence of dorsal heart. |
| E: | Triploblastic pseudocoelomate animals. |
| 1. | C, D and E only | 2. | A, C and D only |
| 3. | B and C only | 4. | B, D and E only |
Subtopic: Â Phylum Chordata |
 83%
Level 1: 80%+
NEET - 2023
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The unique mammalian characteristics are:
1. pinna, monocondylic skull and mammary glands
2. hairs, tympanic membrane and mammary glands
3. hairs, pinna and mammary glands
4. hairs, pinna and indirect development
1. pinna, monocondylic skull and mammary glands
2. hairs, tympanic membrane and mammary glands
3. hairs, pinna and mammary glands
4. hairs, pinna and indirect development
Subtopic: Â Study of Aves & Mammals |
 81%
Level 1: 80%+
NEET - 2023
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Match List - I with List - II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Contractile vacuole | (I) | Asterias |
| (B) | Water vascular system | (II) | Amoeba |
| (C) | Canal system | (III) | Spongilla |
| (D) | Flame cells | (IV) | Taenia |
Choose the correct answer from the options given below:
| Options: | (A) | (B) | (C) | (D) |
| 1. | (IV) | (II) | (I) | (III) |
| 2. | (I) | (III) | (II) | (IV) |
| 3. | (III) | (II) | (I) | (IV) |
| 4. | (II) | (I) | (III) | (IV) |
Subtopic: Â Phylum Porifera |Â Phylum Ctenophora |Â Phylum Echinodermata |
 86%
Level 1: 80%+
NEET - 2023
Hints
Select the correct statements:
Choose the correct answer from the options given below:
| A: | Platyhelminthes are triploblastic, pseudocoelomate and bilaterally symmetrical organisms. |
| B: | Ctenophores reproduce only sexually and fertilization is external. |
| C: | In tapeworm, fertilization is internal but sexes are not separate. |
| D: | Ctenophores are exclusively marine, diploblastic and bioluminescent organisms. |
| E: | In sponges, fertilization is external and development is direct. |
Choose the correct answer from the options given below:
| 1. | (A), (C) and (D) only | 2. | (B), (C) and (D) only |
| 3. | (A) and (E) only | 4. | (B) and (D) only |
Subtopic: Â Phylum Porifera |Â Phylum Coelenterata |Â Phylum Ctenophora |Â Phylum Platyhelminthes |
 67%
Level 2: 60%+
NEET - 2023
Hints
Consider the given two statements:
1. Statement I is incorrect; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | All members of Animalia are multicellular. |
| Statement II: | All members of Animalia have at least a tissue grade of organisation. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Â Basis of Classification |
 73%
Level 2: 60%+
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Identify the option where all the given animals belong to the same Phylum?
1. Portuguese man-of-war, Sea anemone, Sea-pen and Sea-fan
2. Scypha, Fresh water sponge, Bath sponge and Brain Coral
3. Roundworm, Filaria worm, Hookworm and Tapeworm
4. King crab, Mosquito, Silkworm and Blood sucking leech
1. Portuguese man-of-war, Sea anemone, Sea-pen and Sea-fan
2. Scypha, Fresh water sponge, Bath sponge and Brain Coral
3. Roundworm, Filaria worm, Hookworm and Tapeworm
4. King crab, Mosquito, Silkworm and Blood sucking leech
Subtopic: Â Phylum Coelenterata |
 90%
Level 1: 80%+
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The characteristics of osteichthyes include:
1. Only I and II
2. Only II and III
3. Only I and III
4. I, II and III
| I: | Four pairs of gills covered by an operculum on each side |
| II: | Skin covered with placoid scales |
| III: | Regulation of buoyancy by an air bladder |
2. Only II and III
3. Only I and III
4. I, II and III
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
 73%
Level 2: 60%+
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Hippocampus [sea horse] is a:
| 1. | marine bony fish |
| 2. | fresh water bony fish |
| 3. | cartilaginous fish |
| 4. | limbless amphibian |
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
 80%
Level 1: 80%+
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Consider the given statements:
The number of correct statements is:
| I: | Annelids are metamerically segmented animals with a true coelom. |
| II: | Arthropods are the most abundant group of animals characterised by the presence of jointed appendages. |
| III: | Molluscs have a soft body surrounded by an external calcareous shell. |
| IV: | Echinoderms possess a spiny skin. |
| V: | Hemichordates are fresh water animals. |
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 5 |
Subtopic: Â Phylum Annelida |Â Phylum Arthropoda |Â Phylum Mollusca |Â Phylum Echinodermata |Â Phylum Hemichordata |
 73%
Level 2: 60%+
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