The diagram below illustrates iodine test for the presence of starch in a leaf

Why is the leaf boiled in water for few minutes ?

The diagram below illustrates iodine test for the presence of starch in a leaf Why is the leaf again boiled in hot water?

The diagram below illustrates iodine test for the presence of starch in a leaf Why will the colour of leaf after boiling it with methylated spirit turns pale white ?

The diagram below illustrates iodine test for the presence of starch in a leaf What is the composition of lodine solution in 100 mL of water?

Enumerate the steps involved in testing a green leaf for the presence of starch.

Enumerate the steps involved in testing a green leaf for the presence of starch.

A healthy Croton plant bearing variegated leaves was kept in a dark cupboard to destarch it after which it was placed in sunlight for a few hours. One of the leaves was then plucked and an outline of the leaf marking the green and the non-green regions was drawn. The leaf was then tested for starch. Using the above information, answer the following questions Why is the leaf boiled in water and alcohol before testing for the presence of starch?

A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours. During the starch test, why was the leaf: (1) boiled in water (2) boiled in methylated spirit

A metal tray was used to cover a beaker of boiled water as shown in the diagram. The beaker and metal tray were then removed from the tripod stand and left on the table. After two minutes, which of the following can be observed?

Copy and complete the following by filling in the blanks 1 to 5 with appropriate words/terms/ phrases: To test the leaf for starch, the leaf is boiled in water…….(1) It is next boiled in methylated spirit to……(2)The leaf is placed in warm water to soften it. It is then placed in a dish and ......... (3) solution is added. The region, which contains starch, turns...(4)and the region, which does not contain starch, turns ...... (5)

The diagram below represents an experiment conducted to prove the importance of a factor in photosynthesis Study the same and then answer the questions that follow Why was the experimental leaf kept in (1) boiling water (2) methylated spint?