- 1(current)
Q. No.Select the correct statements with reference to chordates.
Choose the correct answer from the options given below:
| A: | Presence of a mid-dorsal, solid and double nerve cord. |
| B: | Presence of closed circulatory system. |
| C: | Presence of paired pharyngeal gill slits |
| D: | Presence of dorsal heart. |
| E: | Triploblastic pseudocoelomate animals. |
| 1. | C, D and E only | 2. | A, C and D only |
| 3. | B and C only | 4. | B, D and E only |
Subtopic: Â Phylum Chordata |
 83%
Level 1: 80%+
NEET - 2023
Hints
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 most appropriate answer from the options given below:
| Assertion (A): | All vertebrates are chordates but all chordates are not vertebrates. |
| Reason (R): | Notochord is replaced by vertebral column in the adult vertebrates. |
| 1. | (A) is False but (R) is True. |
| 2. | Both (A) and (R) are True and (R) correctly explains (A). |
| 3. | Both (A) and (R) are True and (R) does not correctly explain (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Â Phylum Chordata |
 76%
Level 2: 60%+
NEET - 2022
Hints
Which one of the following features are not true for chordates?
(a) Heart is dorsal.
(b) Pharynx is perforated by gill slits.
(c) Central nervous system is ventral, solid and single.
(d) Post-anal tail is present.
(e) Notochord is present.
Choose the most appropriate answer from the option given below:
| 1. | (e) only | 2. | (a), (d) and (c) only |
| 3. | (b) and (c) only | 4. | (a) and (c) only |
Subtopic: Â Phylum Chordata |Â Comparative study of Cartilagenous & Bony Fishes |
 74%
Level 2: 60%+
NEET - 2022
Hints
Which of the following statements are true for the phylum-Chordata?
| (a) | In Urochordata, notochord extends from head to tail and is present throughout their life |
| (b) | In Vertebrata, notochord is present during the embryonic period only |
| (c) | Central nervous system is dorsal and hollow |
| (d) | Chordata is divided into 3 sub-phyla : Hemichordata, Tunicata and Cephalochordata |
2. (a) and (b)
3. (b) and (c)
4. (d) and (c)
Subtopic: Â Phylum Chordata |
 70%
Level 2: 60%+
NEET - 2020
Hints
All vertebrates are chordates but all chordates are not vertebrates, why?
| 1. | Notochord is replaced by a vertebral column in the adults of some chordates. |
| 2. | The ventral hollow nerve cord remains throughout life in some chordates. |
| 3. | All chordates possess a vertebral column. |
| 4. | All chordates possess notochords throughout their lives. |
Subtopic: Â Phylum Chordata |
 84%
Level 1: 80%+
NEET - 2020
Hints
Links
Consider the following features:
| A: | Organ system level of organisation |
| B: | Bilateral symmetry |
| C: | True coelom with segmentation of body |
Select the correct option of animal groups that 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: Â Phylum Annelida |Â Phylum Arthropoda |Â Phylum Chordata |
 72%
Level 2: 60%+
NEET - 2019
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Links
An important characteristic that Hemichordates share with Chordates is:
| 1. | Ventral tubular nerve cord |
| 2. | Pharynx with gill slits |
| 3. | Pharynx without gill slits |
| 4. | Absence of notochord |
Subtopic: Â Phylum Hemichordata |Â Phylum Chordata |
 63%
Level 2: 60%+
NEET - 2017
Hints
Choose the correct statement.
| 1. | All mammals are viviparous |
| 2. | All cyclostomes do not possess jaws and paired fins |
| 3. | All reptiles have a three-chambered heart |
| 4. | All Pisces have gills covered by an operculum |
Subtopic: Â Phylum Chordata |
 79%
Level 2: 60%+
NEET - 2016
Hints
- 1(current)
Q. No.
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