MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which among the following is incorrect about Gnathostomata? |
| A. | These are vertebrates with jaws |
| B. | This super class is classified into Pisces and tetrapods based on their type of blood |
| C. | Pisces use fins for their movement |
| D. | Tetrapods use limbs for their movement |
| Answer» C. Pisces use fins for their movement | |
| 2. |
Which among the following is incorrect about Cyclostomata? |
| A. | Their vertebral column is made of cartilage |
| B. | Lamprey and hagfish are examples of this class |
| C. | Their digestive system is complete with stomach, food pipe and intestines |
| D. | Their circulatory system is closed with a 2 chambered heart |
| Answer» D. Their circulatory system is closed with a 2 chambered heart | |
| 3. |
Which among the following is incorrect about Agnatha? |
| A. | These are also called as jawless fishes |
| B. | Scales and fins are present |
| C. | They adopt parasitic mode of nutrition |
| D. | They have a circular mouth that acts as sucker |
| Answer» C. They adopt parasitic mode of nutrition | |
| 4. |
Agnatha is an example of ________ |
| A. | Sub-phylum |
| B. | Phylum |
| C. | Super-class |
| D. | Class |
| Answer» D. Class | |
| 5. |
Which among the following is incorrect about Vertebrata? |
| A. | All chordates are vertebrates |
| B. | In vertebrates, notochord is replaced by vertebral column in adults |
| C. | They might not have post-anal tail after a certain period of time |
| D. | Notochord is present during embryonic period |
| Answer» B. In vertebrates, notochord is replaced by vertebral column in adults | |
| 6. |
Branchiostoma is an example of Cephalochordata. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which among the following is not correct about Urochordata? |
| A. | They are a classification under Protochordates |
| B. | They have post anal tail only till their larval stage |
| C. | Most of these are marine and almost extinct |
| D. | They don’t contain gill clefts |
| Answer» E. | |
| 8. |
Which among the following is incorrect about chordata? |
| A. | They have paired muscles |
| B. | Post anal tail must be present in chordates |
| C. | Their notochord vanishes after certain period of time |
| D. | Pharyngeal gill slits are present |
| Answer» C. Their notochord vanishes after certain period of time | |
| 9. |
Which among the following is incorrect about chordates? |
| A. | They must have notochord at every point of their life |
| B. | They have a post anal tail |
| C. | They have hollow dorsal nerve cord |
| D. | They have a ventral heart |
| Answer» B. They have a post anal tail | |