Explore topic-wise MCQs in Biology.

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
Discussion
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
Discussion
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
Discussion
4.

Agnatha is an example of ________

A. Sub-phylum
B. Phylum
C. Super-class
D. Class
Answer» D. Class
Discussion
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
Discussion
6.

Branchiostoma is an example of Cephalochordata.

A. True
B. False
Answer» B. False
Discussion
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.
Discussion
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
Discussion
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
Discussion