Biology 1st Paper CQ-Dinajpur Board-2023

What is prophage?

Why ring spot is harmful for papaya tree?

Explain the main technique of reproduction of 2 microorganism.

"'M' cycle is harmful for human body."-Explain.

What is $\mathrm{RQ}$ ?

Why $\mathrm{O}_{2}$ is required in the last stage of aerobic respiration?

Explain the process of mentioned raw material production of the stem.

Analyze the differences between the mentioned two processes of the srem.

What is Cytosol?

Why Lysosome is called suicidal bag?

Explain the most accepted model of second membrane of the stem.

Do the comparative analysis between the mentioned layers of the stem.

What is water sac?

What do you mean by casparian strip?

Classify the sample ' $\mathrm{A}$ ' according to the function and divison.

Analyze the differences between the vascular bundle of sample 'B' and pumpkin stem.

What is limiting factor?

Why maize plant is $\mathrm{C}_{4}$ plant?

Show the flow chart of step- 'C' of the stem.

"The amount of produced energy during two processes of the stem is different"- Analyze.