- 1(current)
Q. No.In which of the following animals, the body is cylindrical and is composed of an anterior proboscis, a collar and a long trunk?
| 1. | Hemichordates | 2. | Urochordates |
| 3. | Cephalochordates | 4. | Vertebrate chordates |
Subtopic: Â Phylum Hemichordata |
 90%
Level 1: 80%+
Hints
The number of correct statements regarding hemichordates from the given is:
| I: | A stomochord is present in the collar region |
| II: | Circulation is of open type |
| III: | Excretory organ is proboscis gland |
| IV: | Development is indirect |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Â Phylum Hemichordata |
 67%
Level 2: 60%+
Hints
Consider the given two statements:
| Statement 1: | Hemichordates were earlier considered as a sub-phylum under Phylum Chordata but are now placed separately in a phylum under non-Chordata. |
| Statement 2: | Hemichordates have a rudimentary structure in the collar region called stomochord, a structure homologous to the notochord. |
| 1. | Both Statement 1 and Statement 2 are correct but Statement 2 does not explain Statement 1. |
| 2. | Statement 1 is correct and Statement 2 is incorrect. |
| 3. | Both Statement 1 and Statement 2 are incorrect. |
| 4. | Both Statement 1 and Statement 2 are correct and Statement 2 explains Statement 1. |
Subtopic: Â Phylum Hemichordata |
Level 4: Below 35%
Hints
In hemichordates:
| 1. | Circulatory system is a closed type |
| 2. | Proboscis gland is a digestive gland that secretes a large number of hydrolytic enzymes |
| 3. | Respiration takes place through the gills |
| 4. | Sexes are not separate, fertilization is internal and development is direct |
Subtopic: Â Phylum Hemichordata |
 59%
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.