Q. No.Consider following features:
| A. | Organ system level of organisation |
| B. | Bilateral symmetry |
| C. | True coelomates with segmentation of body |
Select the correct option of animal groups which possess all the above characteristics.
| 1. | Annelida, Mollusca and Chordata |
| 2. | Annelida, Arthropoda and Chordata |
| 3. | Annelida, Arthropoda and Mollusca |
| 4. | Arthropoda, Mollusca and Chordata |
Subtopic: Phylum Annelida | Phylum Arthropoda | Phylum Chordata |
82%
Level 1: 80%+
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Animals belonging to phylum Chordata are fundamentally characterised by:
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
| I: | the presence of a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits. |
| II: | bilateral symmetry, triploblastic body organisation, true coelom with organ-system level of organisation. |
| III: | a post anal tail and a closed circulatory system. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Phylum Chordata |
83%
Level 1: 80%+
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Which of the following features will be seen in chordates but not in non-chordates?
| (a) | A notochord |
| (b) | Ventral, solid, and double central nervous system |
| (c) | Pharynx perforated by gill slits |
| (d) | Ventral heart |
| (e) | Terminal anus and a lack of post-anal tail |
| 1. | (a), (c), and (d) only | 2. | (a), (b) and (e) only |
| 3. | (a) and (c) only | 4. | (b), (c) and (d) only |
Subtopic: Phylum Chordata |
74%
Level 2: 60%+
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Correctly identify the labelled parts of a hypothetical chordate showing the characteristics of chordate in the given figure:
| A | B | C | D | |
| 1 | Nerve cord |
Notochord | Gill slits | Terminal anus |
| 2 | Notochord | Nerve cord | Gill slits | Post anal tail |
| 3 | Nerve cord |
Notochord | Gill slits | Post anal tail |
| 4 | Notochord | Nerve cord | Muscle myotome |
Terminal anus |
Subtopic: Phylum Chordata |
76%
Level 2: 60%+
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Consider the given statements:
Which of the given statements is/ are true?
1. Only Statement I and Statement II
2. Only Statement I and Statement III
3. Only Statement II and Statement III
4. Statement I, Statement II, and Statement III
| Statement I: | In Urochordata, notochord is present only in larval tail. |
| Statement II: | In Cephalochordata, notochord extends from head to tail region and is persistent throughout their life. |
| Statement III: | Both Urochordates and Cephalochordates are exclusively marine. |
1. Only Statement I and Statement II
2. Only Statement I and Statement III
3. Only Statement II and Statement III
4. Statement I, Statement II, and Statement III
Subtopic: Phylum Chordata |
71%
Level 2: 60%+
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Consider the given two statements:
| Statement I: | Protochordates are exclusively marine. |
| Statement II: | In Urochordata, notochord is present only in larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Phylum Chordata |
89%
Level 1: 80%+
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All the following animals are Urochordates except:
1. Ascidia
2. Salpa
3. Doliolum
4. Branchiostoma
1. Ascidia
2. Salpa
3. Doliolum
4. Branchiostoma
Subtopic: Phylum Chordata |
90%
Level 1: 80%+
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Tunicates are included in which sub-phylum of Chordata?
| 1. | Urochordata | 2. | Cephalochordata |
| 3. | Cyclostomata | 4. | Hemichordata |
Subtopic: Phylum Chordata |
79%
Level 2: 60%+
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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 and Myxine | P. | Cyclostome |
| B. | Amphioxus or Lancelet | Q. | Cephalochordate |
| C. | Ascidia and Salpa | R. | Urochordate |
Codes:
| A | B | C | |
| 1. | P | Q | R |
| 2. | R | Q | P |
| 3. | P | R | Q |
| 4. | R | P | Q |
Subtopic: Phylum Chordata | General Introduction: Vertebrates & Agnatha |
86%
Level 1: 80%+
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Consider the given two statements:
| Assertion(A): | All chordates are not vertebrates. |
| Reason (R): | All chordates do not have a notochord at any stage of their development. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Phylum Chordata |
69%
Level 2: 60%+
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