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 |
85%
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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 |
82%
From NCERT
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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 |
81%
From NCERT
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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 |
78%
From NCERT
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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 |
80%
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Consider the given two statements:
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
| 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. |
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%
From NCERT
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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 |
88%
From NCERT
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Tunicates are included in which sub-phylum of Chordata?
| 1. | Urochordata | 2. | Cephalochordata |
| 3. | Cyclostomata | 4. | Hemichordata |
Subtopic: Phylum Chordata |
78%
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 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 |
88%
From NCERT
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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 |
68%
From NCERT
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