Biology 1st Paper CQ-Barishal Board-2023

What is nucleoside?

What do you mean by codon?

Write the structure of organelle-' $Z$ ' of the stem.

Analyze the role of ' $\mathrm{X}$ ' and ' $\mathrm{Y}$ ' in the process of the stem.

What is explant?

What do you mean by culture medium?

Describe the steps of $2^{\text {nd }}$ technology of the stem with diagram.

Analyze the biosafety risks of two processes in the stem.

What is placentation?

What do you mean by coralloid root?

Draw the floral diagram of first flower of the stem.

Between the families of the stem, plants of which family is more important in the economy of Bangladesh? Give your logic.

What is stele?

What do you mean by endarch?

Classify the tissue in the stem based on location with diagram.

Is the arrangement of tissues of tissue system of the stem same in different plants? Give logic.

What is metakinesis?

What do you mean by interphase?

Describe the subphase-' $K$ ' of the stem with diagram.

Analyze the importance of the cell division of the stem in creating biodiversity.