- 1(current)
Q. No.What is true about Nereis, scorpion, cockroach and silver fish ?
1. They all possess dorsal heart
2. None of them is aquatic
3. They all belong to the same phylum
4. They all have jointed paired appendages
Match the name of the animal (Column I), with one characteristics (Column II), and the phylum/class (Column III) to which it belongs
|
Column I |
Column II |
Column III |
|
|
1. |
Ichthyophis |
terrestrial |
Reptilia |
|
2. |
Limulus |
body covered by chitinous exoskeleton |
Pisces |
|
3. |
Adamsia |
radially symmetrical |
Porifera |
|
4. |
Petromyzon |
ectoparasite |
Cyclostomata |
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 120462
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 120462
All vertebrates are chordates but all chordates are not vertebrates, why?
| 1. | Notochord is replaced by a vertebral column in adults of some chordates. |
| 2. | Ventral hollow nerve cord remains throughout life in some chordates. |
| 3. | All chordates possess a vertebral column. |
| 4. | All chordates possess notochord throughout their life. |
In which of the following, the notochord is present in the embryonic stage?
| 1. | All chordates | 2. | Some chordates |
| 3. | Only Vertebrates | 4. | Non-chordates |
| 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. |
Which of the following statements are true for the phylum-Chordata?
| (a) | In Urochordata, notochord extends from head to tail and it 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 subphyla : Hemichordata, Tunicata and Cephalochordata |
| 1. | (c) and (a) | 2. | (a) and (b) |
| 3. | (b) and (c) | 4. | (d) and (c) |
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 |
In which one of the following sets of animals, all the four, give birth to young ones?
| 1. | Kangaroo, hedgehog, dolphin, loris |
| 2. | Lion, bat, whale, ostrich |
| 3. | Platypus, penguin, bat, hippopotamus |
| 4. | Shrew, bat, cat, kiwi |
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 give below :
| 1. | (e) only | 2. | (a), (d) and (c) only |
| 3. | (b) and (c) only | 4. | (a) and (c) only |
| (a) | They lack scales and paired fins. |
| (b) | They have circular mouth with Jaws. |
| (c) | They bear 6-15 pairs of gills. |
| (d) | They migrate to deep sea for spawning. |
Choose the most appropriate answer from the options given below :
| 1. | (a) and (b) only | 2. | (b) and (c) only |
| 3. | (b) and (d) only | 4. | (a) and (d) only |
- 1(current)
Q. No.
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