CSS :: Phylum Cnidaria or Coelentrata
|
|
|
|
|
|
| 91. |
Medusae are formed by: |
| A. |
Gastrozooids through asexual reproduction |
B. |
Blastostyles through asexual reproduction |
| C. |
Both through sexual reproduction |
D. |
None of these processes |
Answer: Option B
Explanation:
|
| 92. |
Medusa of Obelia is: |
| A. |
Free swimming |
B. |
Fixed and non-mobile |
| C. |
Floating |
D. |
None of these |
Answer: Option A
Explanation:
|
| 93. |
Tentacles in Obelia polyp are: |
| A. |
Hollow |
B. |
Solid |
| C. |
Irregular |
D. |
None of these |
Answer: Option B
Explanation:
|
| 94. |
Polymorphism is found in: |
| A. |
Hydra |
B. |
Physailia |
| C. |
Aurelia |
D. |
All of these |
Answer: Option B
Explanation:
|
| 95. |
Which of these does not exhibit polymorphsim: |
| A. |
Hydra |
B. |
Jelly fish |
| C. |
Metridium |
D. |
All of these |
Answer: Option D
Explanation:
|
| 96. |
Which of these exhibits phenomenon of polymorphism: |
| A. |
Physaila |
B. |
Obelia |
| C. |
Both (a) & (b) |
D. |
None of these |
Answer: Option C
Explanation:
|
| 97. |
Chitinous covering ocer the colony of Obelia is: |
| A. |
Coenosarc |
B. |
Perisarc |
| C. |
Cuticle |
D. |
None of these |
Answer: Option B
Explanation:
|
| 98. |
In which of these the perisarc forms shelf like ring in Obelia: |
| A. |
Hydranth |
B. |
Blastostyles |
| C. |
Both (a) & (b) |
D. |
None of these |
Answer: Option A
Explanation:
|
| 99. |
In blastostyles the perisarc forms: |
| A. |
Hydrotheca |
B. |
Gonotheca |
| C. |
Blastotheca |
D. |
None of these |
Answer: Option B
Explanation:
|
| 100. |
Hydrotheca is formed around: |
| A. |
Polyps of Obelia |
B. |
Blastostyles of Obelia |
| C. |
Both of these |
D. |
None of these |
Answer: Option A
Explanation:
|
Read more:
|
|
