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Q. No.Consider the given statements regarding Sponges.
I:
They have a cellular level of organisation
II:
Digestion is intracellular
III:
Fertilization is external and development is direct
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Phylum Porifera |
77%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Radula – Molluscs | 2. | Malpighian tubules– Insects |
| 3. | Choanocytes– Sponges | 4. | Cnidocytes – Ctenophora |
Subtopic: Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes |
84%
From NCERT
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In Chordates
1. Only I and II are correct
2. Only III is correct
3. Only II is correct
4. Only I and III are correct
| I: | Heart is dorsal |
| II: | Central nervous system is ventral |
| III: | A post-anal tail is present |
2. Only III is correct
3. Only II is correct
4. Only I and III are correct
Subtopic: Phylum Chordata |
79%
From NCERT
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Match each item in Column I with the one in column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A | Cephalochordata | P | Swim bladder |
| B | Cyclostomata | Q | Notochord – head to tail |
| C | Chondrichthyes | R | Males bear claspers on pelvic fins |
| D | Osteichthyes | S | Marine but migrate to freshwater for spawning |
| A | B | C | D | |
| 1. | S | Q | P | R |
| 2. | P | Q | R | S |
| 3. | Q | S | R | P |
| 4. | R | P | S | Q |
Subtopic: General Introduction: Vertebrates & Agnatha |
90%
From NCERT
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Which of the following animals is not matched to its correct scientific name?
| 1. | Penguin: Aptenodytes | 2. | Tortoise: Testudo |
| 3. | Platypus: Macropus | 4. | Angel fish: Pterophyllum |
Subtopic: Study of Aves & Mammals |
82%
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Hemichordates are not chordates. |
| Reason (R): | They do not have a notochord. |
| 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 Hemichordata | Phylum Chordata |
86%
From NCERT
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Match each item in Column I with one in Column II and select the best match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Comb plates | P. | Cnidaria |
| B. | Metagenesis | Q. | Mollusca |
| C. | Canal system | R. | Sponges |
| D. | Radula | S. | Ctenophora |
| A | B | C | D | |
| 1. | S | P | R | Q |
| 2. | P | S | R | Q |
| 3. | P | S | Q | R |
| 4. | S | P | Q | R |
Subtopic: Phylum Porifera | Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes | Phylum Mollusca |
88%
From NCERT
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Identify the incorrect statement:
1. Notochord is derived from embryonic mesoderm
2. Stomochord in hemochordates is actually notochord
3. Chordates have a post-anal tail
4. Pharynx is perforated by gill slits in chordates
1. Notochord is derived from embryonic mesoderm
2. Stomochord in hemochordates is actually notochord
3. Chordates have a post-anal tail
4. Pharynx is perforated by gill slits in chordates
Subtopic: Phylum Hemichordata |
74%
From NCERT
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What is the number of animals, amongst the animals given below, that have both a four-chambered heart and endothermy?
Crocodilus, Aptendytes, Canis, Calotes, Struthio, Delphinus, Testudo, Ichthyophis
| 1. | 3 | 2. | 4 |
| 3. | 5 | 4. | 6 |
Subtopic: Phylum Chordata | Study of Reptilia | Study of Aves & Mammals |
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. | Petromyzon | P | A jawless vertebrate |
| B. | Icthyophis | Q | A limbless amphibian |
| C. | Struthio | R | A flightless bird |
Codes
| A | B | C | |
| 1. | Q | R | P |
| 2. | Q | P | R |
| 3. | P | Q | R |
| 4. | P | R | Q |
Subtopic: Phylum Chordata | Comparative study of Cartilagenous & Bony Fishes | Study of Amphibians | Study of Aves & Mammals |
89%
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