Question

The bread or idli dough rises because of
(i) heat (ii) grinding (iii) growth of yeast cells (iv) kneading

NCERT Class 8th Science Chapter 2 Microorganisms: Friend and Foe

Answer 1

The bread or idli dough rises because of growth of yeast cells.

The yeast cells reproduce in great numbers if there is lot of food around to take benefit from the food.

When they reproduce, they normally develop a small bud from one side of themselves.

Then they put a tiny nucleus and pinch it off to make new smaller yeast cell.

Answer 2

Hey mate!

Here's your answer!!

The bread or idli dough rises because of growth of yeast.

It is because the yeast cells grow and by respiration, they fill the dough or idli with bubbles and increase it's volume.

$hope \: it \: helps \: you.$
✌ ✌