Biology 2nd Paper CQ-Cumilla Board-2017
2. The result of a genetic experiment is shown below-
3. In the practical class, after dissection of a Rui fish, the teacher showed a special elastic organ and said- this is the main centre of blood circulation. He also said that "In case of fishes, this circulation is single cycle circulation."
4. During the discussion about the immune system of human body, the teacher said, "In our body, during the definite phase of the immune system, one kind of protein molecule is produced from the B- lymphocyte which destroys the foreign substances or microorganisms. The protein molecule plays a vital role in the immune system of our body".
Table - 1 | Table -2 |
Animal: Rui fish, roundworm, tapeworm. | According to the body cavity of the animals of table-1, they can be divided into different groups. |