CBSE Class 10 Science 2018 · Paper 31/1/C · Question 25
Draw diagrams showing reproduction in yeast in proper sequence.
Answer
Yeast reproduces by budding: a bud forms on the parent, receives a daughter nucleus, grows, and separates as a new cell.
The diagrams are the four stages in the figure at step 4, in this order:
(i) A mature parent yeast cell with a nucleus.
(ii) A small outgrowth, the bud, appears on one side of the cell, and the nucleus divides into two.
(iii) One daughter nucleus passes into the bud, which grows bigger.
(iv) The bud separates from the parent as a new yeast cell, or stays attached and buds again, forming a chain of buds.
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