- 1(current)
Q. No.The tunic of urochordates is composed of proteins and complex carbohydrates, and includes tunicin, which is a variety of:
| 1. | cellulose | 2. | amylopectin |
| 3. | agaropectin | 4. | alginic acid |
| I. | Heart is dorsal |
| II. | Central nervous system is ventral |
| III. | A post-anal tail is present |
1. Only I and II are correct
2. Only III is correct
3. Only II is correct
4. Only I and III are correct
What is the number of animals, amongst the animals given in the box, that have both a four chambered heart and endothermy?
Crocodilus, Aptendoytes, Canis, Calotes, Struthio, Delphinus, Testudo, Icthyophis
| 1. | 3 | 2. | 4 |
| 3. | 5 | 4. | 6 |
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 |
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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
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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
Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct ?
1. It is present throughout life in Amphioxus
2. It is present only in larval tail in Ascidians
3. It is replaced by vertebral column in adult frog
4. It is absent throughout life in humans from the very beginning
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| Assertion (A): | Hemichordates are not chordates. |
| Reason (R): | They do not have a notochord. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
| COLUMN I | COLUMN II | ||
| A. | Petromyzon | P | A jawless vertebrate |
| B. | Icthyophis | Q | A limbless amphibian |
| C. | Struthio | R | A flightless bird |
Codes
| A | B | C | |
| 1. | Q | R | P |
| 2. | Q | P | R |
| 3. | P | Q | R |
| 4. | P | R | Q |
- 1(current)
Q. No.
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