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Q. No.Assertion (A): Tapeworm, roundworm and pinworm are endoparasites of human intestine.
Reason (R): Improperly cooked food is one of the main causes of intestinal infections.
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. Both (A) and (R) are false.
Subtopic: Phylum Ctenophora & Platyhelminthes | Phylum Aschelminthes |
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Identify the option where all given animals belong to the same phylum:
| 1. | Squid, Devil fish, Flying fish, Dogfish |
| 2. | Apple snail, Pearl oyster, Brittle star, Brain coral |
| 3. | Sea urchin, Sea lily, Sea cucumber, Sea horse |
| 4. | Cuttlefish, Sea-hare, Tusk shell, Chiton |
Subtopic: Phylum Mollusca |
72%
From NCERT
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Members of Chondrichthyes are characterised by all the following except:
| 1. | Presence of a swim bladder |
| 2. | Ventrally located mouth |
| 3. | Lack of operculum |
| 4. | Placoid scales |
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
80%
From NCERT
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Consider the two statements:
| Assertion (A): | Hemichordata was earlier considered as a sub-phylum under non-chordata but now it is placed as a separate Class under Chordata. |
| Reason (R): | Hemichordates have a rudimentary structure in the collar region called stomochord, a structure homologous to notochord. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are False. |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A). |
Subtopic: Phylum Hemichordata |
61%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I [Phylum] |
Column II [Characteristic] |
||
| A | Porifera | P | Water vascular system |
| B | Aschelminthes | Q | Canal system |
| C | Echinodermata | R | Pseudocoelom |
| D | Hemichordata | S | Stomochord |
| A | B | C | D | |
| 1. | Q | R | P | S |
| 2. | S | R | Q | P |
| 3. | Q | S | R | P |
| 4. | R | S | P | Q |
Subtopic: Phylum Porifera | Phylum Aschelminthes | Phylum Echinodermata | Phylum Hemichordata |
92%
From NCERT
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Identify a vertebrate chordate amongst the following:
1. Ascidia
2. Doliolum
3. Brannchiostoma
4. Petromyzon
1. Ascidia
2. Doliolum
3. Brannchiostoma
4. Petromyzon
Subtopic: Phylum Chordata |
74%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A | Radula | P | Osteichthyes |
| B | Operculum | Q | Molluska |
| C | Flame cell | R | Flat worms |
| D | Hair | S | Mammalia |
| A | B | C | D | |
| 1. | P | S | Q | R |
| 2. | Q | P | R | S |
| 3. | Q | R | P | S |
| 4. | R | Q | S | P |
Subtopic: Phylum Ctenophora & Platyhelminthes | Phylum Mollusca | Phylum Chordata | Comparative study of Cartilagenous & Bony Fishes | Study of Aves & Mammals |
94%
From NCERT
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The cell shown in the figure is used in:
| 1. | capturing prey in Cnidarians |
| 2. | generating water current in sponges |
| 3. | osmoregulation in rotifers |
| 4. | movement in ctenophores |
Subtopic: Phylum Coelenterata |
91%
From NCERT
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Notochord is a:
| 1. | endodermally derived rod-like structure formed on the dorsal side during embryonic development in some animals. |
| 2. | endodermally derived rod-like structure formed on the ventral side during embryonic development in some animals. |
| 3. | mesodermally derived rod-like structure formed on the dorsal side during embryonic development in some animals. |
| 4. | mesodermally derived rod-like structure formed on the ventral side during embryonic development in some animals. |
Subtopic: Phylum Chordata |
81%
From NCERT
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What would not be true for cyclostomes?
| 1. | All are endoparasites on some fishes. |
| 2. | They have aa circular mouth without jaw. |
| 3. | Body is devoid of scales and paired fins. |
| 4. | Circulation is of closed type. |
Subtopic: Phylum Chordata |
69%
From NCERT
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