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Q. No.Select the correct statements:
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: Phylum Porifera | Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes |
65%
From NCERT
NEET - 2023
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Consider the given two statements:
Statement I: All members of Animalia are multicellular.
Statement II: All members of Animalia have at least a tissue grade of organisation.
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.
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
Subtopic: Basis of Classification |
73%
From NCERT
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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: Phylum Coelenterata |
89%
From NCERT
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The characteristics of Osteichthyes include:
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
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
1. Only I and II
2. Only II and III
3. Only I and III
4. I, II and III
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
72%
From NCERT
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Hippocampus [sea horse] is a:
1. marine bony fish
2. fresh water bony fish
3. cartilaginous fish
4. limbless amphibian
1. marine bony fish
2. fresh water bony fish
3. cartilaginous fish
4. limbless amphibian
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
80%
From NCERT
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Consider the given statements:
I: Annelids are metamerically segmented animals with a true coelom.
II: The arthropods are the most abundant group of animals characterised by the presence of jointed appendages.
III: The molluscs have a soft body surrounded by an external calcareous shell.
IV: The echinoderms possess a spiny skin.
V: The hemichordates are fresh water animals.
The number of correct statements is:
1. 2
2. 3
3. 4
4. 5
I: Annelids are metamerically segmented animals with a true coelom.
II: The arthropods are the most abundant group of animals characterised by the presence of jointed appendages.
III: The molluscs have a soft body surrounded by an external calcareous shell.
IV: The echinoderms possess a spiny skin.
V: The hemichordates are fresh water animals.
The number of correct statements is:
1. 2
2. 3
3. 4
4. 5
Subtopic: Phylum Annelida | Phylum Arthropoda | Phylum Mollusca | Phylum Echinodermata | Phylum Hemichordata |
71%
From NCERT
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Most vertebrates:
I: possess a jaw
II: have a cartilaginous endoskeleton
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: possess a jaw
II: have a cartilaginous endoskeleton
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Phylum Chordata |
60%
From NCERT
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Study the Assertion statement followed by the Reason statement given below:
Assertion: The digestive system in Platyhelminthes is called incomplete.
Reason: Platyhelminthes are mostly endoparasites found in animals including human beings.
1. Assertion (A) is true and Reason (R) is false.
2. Both Assertion (A) and Reason (R) are true and Reason (R) is a correct explanation of Assertion (A).
3. Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).
4. Assertion (A) is false and Reason (R) is true.
Assertion: The digestive system in Platyhelminthes is called incomplete.
Reason: Platyhelminthes are mostly endoparasites found in animals including human beings.
1. Assertion (A) is true and Reason (R) is false.
2. Both Assertion (A) and Reason (R) are true and Reason (R) is a correct explanation of Assertion (A).
3. Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).
4. Assertion (A) is false and Reason (R) is true.
Subtopic: Phylum Ctenophora & Platyhelminthes |
67%
From NCERT
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Notochord is:
I. an endodermally derived rod-like structure.
II. formed on the dorsal side during embryonic
development in some animals.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I. an endodermally derived rod-like structure.
II. formed on the dorsal side during embryonic
development in some animals.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Phylum Chordata |
70%
From NCERT
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Aschelminthes are:
1. radially symmetrical, triploblastic and pseudocoelomate animals.
2. bilaterally symmetrical, triploblastic and acoelomate animals.
3. bilaterally symmetrical, triploblastic and pseudocoelomate animals.
4. radially symmetrical, diploblastic and eucoelomate animals.
1. radially symmetrical, triploblastic and pseudocoelomate animals.
2. bilaterally symmetrical, triploblastic and acoelomate animals.
3. bilaterally symmetrical, triploblastic and pseudocoelomate animals.
4. radially symmetrical, diploblastic and eucoelomate animals.
Subtopic: Phylum Ctenophora & Platyhelminthes |
88%
From NCERT
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