Question

In the figure of budding in yeast, structures a, b, c and d should be labelled respectively as:

• A. Nucleus of bud, bud, yeast (parent cell), nucleus of yeast (parent cell)
• B. Bud, yeast (parent cell), nucleus of yeast (parent cell), nucleus of bud
• C. Nucleus of bud, bud, nucleus of yeast (parent cell), yeast (parent cell)
• D. Nucleus of yeast (parent cell), yeast (parent cell), bud, nucleus of bud

Answer 1

The correct option is A Nucleus of bud, bud, yeast (parent cell), nucleus of yeast (parent cell)

Budding is the main method of reproduction in yeast. During favourable conditions, yeast reproduces by budding in which a small outgrowth called bud forms on the parent cell.

Label 'c' is the yeast (parent cell) and label 'b' is the bud

After this, the nucleus of the parent cell divides and migrates into the bud.

Label 'd' is the nucleus of the parent yeast and label 'a' is the nucleus of the bud. This bud increases in size and finally breaks off to form the new individual.

Thus, the correct answer is option A.