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Q. No.Column-I contain larval stages and column-II contain the groups to which they belong. Match them correctly and choose the right option"
Column-I
Column-II
A.
Planula
i.
Annelida
B.
Tornaria
II.
Mollusca
C.
Trochophore
iii.
Arthropoda
D.
Bipinnaria
iv.
Hemichordata
E.
Glochidium
v.
Echinodermata
vi.
Coelenterata
1. A = vi, B = iv, C = i, D = v, E = ii
2. A = ii, B = v, C = i, D = iv, E = vi
3. A = v, B = iv, C = iii, D = ii, E = i
4. A = iv, B = iii, C = ii, D = i, E = v
Subtopic: Phylum Annelida | Phylum Arthropoda | Phylum Mollusca | Phylum Echinodermata | Phylum Hemichordata | Phylum Chordata |
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Read the following statements for the first triploblastic animals (w.r.t. evolution)
i. Possess coelom
ii. Are acoelomate
iii Are pseudocoelomate
iv. Possess protonephridia
v. Cephalisation begins
vi. Is exemplified by Planaria
Which of the following statements corresponds to these animals?
1. i, ii, iii
2. i, ii, iii, iv, v, vi
3. ii, iv, v, vi
4. i and iii
i. Possess coelom
ii. Are acoelomate
iii Are pseudocoelomate
iv. Possess protonephridia
v. Cephalisation begins
vi. Is exemplified by Planaria
Which of the following statements corresponds to these animals?
1. i, ii, iii
2. i, ii, iii, iv, v, vi
3. ii, iv, v, vi
4. i and iii
Subtopic: Basis of Classification:I | Basis of Classification:II | Basis of Classification |
78%
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Assertion (A): Coelenterates have a tissue level of organization.
Reason (R): Cells performing the same function are arranged in tissues.
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.
Reason (R): Cells performing the same function are arranged in tissues.
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 |
72%
From NCERT
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Assertion (A): The digestive system of Aschelminthes is incomplete.
Reason (R): The incomplete digestive system has only a single opening to the outside of the body that serves as both mouth and anus.
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.
Reason (R): The incomplete digestive system has only a single opening to the outside of the body that serves as both mouth and anus.
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 Aschelminthes |
71%
From NCERT
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Assertion (A): Platyhelminthes are also known as Flatworms.
Reason (R): Platyhelminthes have a dorsolaterally flattened body.
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.
Reason (R): Platyhelminthes have a dorsolaterally flattened body.
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 Ctenophora & Platyhelminthes |
From NCERT
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Assertion (A): Aschelminthes are called roundworms.
Reason (R): Aschelminthes have circular bodies in cross-section.
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.
Reason (R): Aschelminthes have circular bodies in cross-section.
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 Aschelminthes |
90%
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Assertion (A): Annelids have segments or metameres which are distinctly marked out.
Reason (R): The word Annelida is derived from the Latin word annulus which means little rings.
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.
Reason (R): The word Annelida is derived from the Latin word annulus which means little rings.
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 Annelida |
51%
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Assertion (A): Echinoderms are spiny-bodied animals.
Reason (R): Their exoskeleton is made up of calcareous ossicles.
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.
Reason (R): Their exoskeleton is made up of calcareous ossicles.
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 |
From NCERT
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Which of the following groups of three animals, each is correctly matched with their one characteristic morphological feature:
| Animals | Morphological features | |
| (a) | Scorpion, spider, cockroach | Ventral solid nerve cord |
| (b) | Centipede, prawn, sea-urchin | Joined appendages |
| (c) | Cockroach, Locust, Taenia | Metameric segmentation |
| (d) | Liver fluke, sea-anemone, sea-cucmber | Bilateral symmetry |
Subtopic: Phylum Arthropoda | Phylum Mollusca | Phylum Echinodermata |
65%
From NCERT
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Read the following statements:
i. Snakes lack urinary bladder
ii. Air sacs in birds are helpful to lessen the body weight, keep the body warm, regulate body temperature and help in blood circulation
iii. Bone marrow is abundantly present in birds
iv. Devil fish belongs to the phylum Mollusca
v. Sea urchin has mouth on lower side and anus on the upper side
How many of the above statements are incorrect?
1. One
2. Three
3. Two
4. Four
i. Snakes lack urinary bladder
ii. Air sacs in birds are helpful to lessen the body weight, keep the body warm, regulate body temperature and help in blood circulation
iii. Bone marrow is abundantly present in birds
iv. Devil fish belongs to the phylum Mollusca
v. Sea urchin has mouth on lower side and anus on the upper side
How many of the above statements are incorrect?
1. One
2. Three
3. Two
4. Four
Subtopic: Phylum Arthropoda | Study of Aves & Mammals |
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