Biology 1st Paper CQ-Chittagong Board-2019

What is restriction enzyme?

What is callus? Explain.

Draw a labelled diagram of that micro organism as mentioned in the stem.

The molecule as mentioned in the stem plays a vital role in biotechnology Analyse.

What is virion?

What is schizont? Explain.

Describe the physical structure of that organic molecule as mentioned in the stem.

Analyze the importance of micro organism 'B' as mentioned in the stem in increase or decrease of soil fertility.

What is interphase?

What is cytokinesis? Explain.

Write down the characteristics of the next phase as shown in the stem-B.

The cell division of figure ' $\mathrm{A}$ ' creates diversity - Analyze.

What is exine?

What is apospory? Explain.

Show the steps of ' $\mathrm{X}$ ' formation with labelled diagram as shown in the stem 'A'.

Analyse the necessity of forming ' $\mathrm{Y}$ ' as shown in the stem 'B'.

What is isogamy?

What is holdfast? Explain.

Draw a labelled diagram of that plant growing behind the cowshed as mentioned in the stem.

Associated two types of plant play a vital role in forming thallus as mentioned in stem - Analyse.