Question

The potato tuber is a modified stem. Deepa took a small thin section of
potato with the help of a blade. She placed the section on a slide and added
3-4 drops of iodine solution. The whole section turned bluish black in colour
Exactly which part of the tuber cells got stained?
Starch grains
Nucleus
Cell walls
Food vesicles​

Answer 1

Answer:

In potato the under ground portion is a modified stem in that it stores reserve food and has all characters of stem i.e. roots and shoots appear from it and it has buds (eyes) also. Potato is a tuber (that part carry out photosynthesis- the green color part seen in young potato). It is called a modified stem as it has scaly leaves, nodes, internodes and adventitious roots, characteristic to stems.

Hence answer is 'Both A and B'

Explanation:

Answer 2

Answer:

starch grains turned blue black