- 1(current)
Q. No.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: Â Phylum Chordata |
 78%
Level 2: 60%+
Hints
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: Â Phylum Chordata |
 76%
Level 2: 60%+
Hints
Consider the two statements:
| Statement I: | All vertebrates are chordates but all chordates are not vertebrates. |
| Statement II: | Besides the basic chordate features, all vertebrates have at least a three-chambered heart and paired appendages. |
| 1. | Both Statement I and Statement II are correct but Statement II does not explain Statement I. |
| 2. | Statement I is correct and Statement II is incorrect. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Both Statement I and Statement II are correct and Statement II explains Statement I. |
Subtopic: Â Phylum Chordata |
 72%
Level 2: 60%+
Hints
The given flow chart shows the classification scheme of sub-phylum Vertebrata. Identify A, B, C and D.
| A | B | C | D | |
| 1. | Phylum | Cephalochordata | Urochordata | Protochordata |
| 2. | Division | Agnatha | Super-Class | Pisces |
| 3. | Phylum | Protochordata | Infra-class | Jawless fishes |
| 4. | Division | Agnatha | Sub-division | Pisces |
Subtopic: Â Phylum Chordata |
 83%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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