Question

19. Preeti performed an iodine test on a leaf and the result
is shown here.
Which of the following conclusions cannot be made
from this?
A.
B.
Part X of the leaf had chlorophyll while part Y
lacked chlorophyll
Part X of the leaf received sunlight while part Y
did not receive sunlight.
Part X of the leaf lacked CO, while part Y received
CO,
Starch was present in part X of the leaf while in
part Y it was absent.​

Answer 1

Option D is correct

Explanation:

Iodine test is used for the detection of the starch in any solution. It can be used in any solution or substance for detecting the presence of starch.

The given figure shows that the X part of the leaf has starch in it and the Y part of the leaf has no starch in it.

This is so because the X part of the leaf has been receiving sunlight and performing photosynthesis.

So, the correct answer is option D as the X part of the leaf is brown in color.

Learn more about iodine test:

What is iodine test https://brainly.in/question/4365572

Test for starch  https://brainly.in/question/7801941

#Learnwithbrainly

Answer 2

Answer:

Answer is C

Explanation:

According to the given figure, upon performing iodine test, X part