- 1(current)
Q. No.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 |
 83%
Level 1: 80%+
NEET - 2020
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Amniotes
| 1. | include amphibians, reptiles, birds, and mammals |
| 2. | are especially well adapted for fresh water |
| 3. | have physiological mechanisms for conserving water |
| 4. | typically excrete ammonia |
| 5. | gave rise to the amphibians |
Subtopic: Â Phylum Chordata |
Level 4: Below 35%
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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 |
 80%
Level 1: 80%+
NEET - 2016
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Which of the following is/are found in tunicates?
1. notochord
2. tube feet
3. two pairs of appendages
4. vertebral column
1. notochord
2. tube feet
3. two pairs of appendages
4. vertebral column
Subtopic: Â Phylum Chordata |
 82%
Level 1: 80%+
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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 |
1. (c) and (a)
2. (a) and (b)
3. (b) and (c)
4. (d) and (c)
Subtopic: Â Phylum Chordata |
 70%
Level 2: 60%+
NEET - 2020
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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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Most vertebrates:
| I: | possess a jaw |
| II: | have a cartilaginous endoskeleton |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Â Phylum Chordata |
 61%
Level 2: 60%+
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Notochord is:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | an endodermally derived rod-like structure. |
| II: | formed on the dorsal side during embryonic development in some animals. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Phylum Chordata |
 71%
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 | Branchiostoma | P | Notochord persisting in adult |
| B | Ascidia | Q | Notochord present only in larval tail |
| C | Pristis | R | Cartilaginous endoskeleton |
| D | Catla | S | Bone endoskeleton |
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | P | Q | S | R |
| 3. | Q | P | R | S |
| 4. | Q | P | S | R |
Subtopic: Â Phylum Chordata |Â Comparative study of Cartilagenous & Bony Fishes |
 76%
Level 2: 60%+
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Cyclostomes:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | are marine but migrate for spawning to fresh water. |
| II: | die within a few days of spawning. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Phylum Chordata |
 92%
Level 1: 80%+
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- 1(current)
Q. No.
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