Test for Chlorophyll

Q.

Explain Doriventral(Dicotyledonous) leaf and Isobilatral(Monocotyledons) leaf (point wise)

Q.

A potted plant with variegated leaves was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours and then placed in bright sunlight for a few hours. Observe the diagram and answer the questions.

1. What aspect of photosynthesis is being tested in the above diagram?
2. Represent the process of photosynthesis in the form of a balanced equation.
3. Why was the plant kept in the dark before beginning the experiment?
4. What will be the result of the starch test performed on leaf A shown in the diagram? Give an example of a plant with variegated leaves.
5. Draw a neat labeled diagram of a chloroplast.

Q.

A plant has leaves that are partly green and partly white. The plant is destarched and a leaf is partly covered by black paper.

The plant is placed in bright light for several hours. Four discs are then cut from the leaf in the positions shown and are tested for starch.

Which discs contain starch?

1. 1 and 2

2. 2 only

3. 3 and 4

4. 1 only

Q.

Only green parts of a leaf give iodine test positive in the presence of ___.

1. starch

2. protein

3. both starch and protein

4. any carbohydrate

Q.

Which of the following is not a plant having variegated leaves?

1. Coleus

   

2. Geranium

   

3. Croton

   

4. Money Plant

   

Q.

In which of the following liquids is leaf boiled to remove chlorophyll from it?

1. Hydrochloric acid

2. Methylated spirit

3. Chloroform

4. Iodine solution

Q.

Which of the following describes a variegated leaf?

1. A leaf that contains no chlorophyll

2. A leaf that contains no starch

3. A leaf that contains chlorophyll in patches

4. A leaf that contains starch in patches

Q.

State what you would observe when: A green leaf is heated over a water bath in a test tube containing methylated spirit.

Q.

State whether the following statements are true/false. ​
(ii) Presence of chlorophyll can be observed in variegated leaves only.​

1. True
2. False

Q.

The following image suggests the test done to confirm the necessity of ___ for photosynthesis.

1. all of the above

2. carbon dioxide

3. water

4. chlorophyll

Q.

A potted plant with variegated leaves was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours and then placed in bright sunlight for a few hours. Observe the diagram and answer the questions.​

(i) What aspect of photosynthesis is being tested in the above diagram?​

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