Process of Photosynthesis

Q.

What are the factors that affect photosynthesis?

Q.

Prove that chlorophyll is necessary for photosynthesis.

Q.

What is photosynthesis?

Q.

How will you remove chlorophyll from a leaf?

Q.

What is the role of carbon dioxide and water in the process of photosynthesis

Q. Plants lose water through leaves by a process called __ .

1. condensation
2. photosynthesis
3. respiration
4. transpiration

Q.

Question 10 (i)
Mark ‘T’ if the statement is true and ‘F’ if it is false:
(i) Carbon dioxide is released during photosynthesis. (T/F)

Q.

The process of preparing food by the plants is called as ...................

1. Digestion

2. Photosynthesis

3. Reproduction

4. Movement

Q.

All plants have chlorophyll.

1. True
2. False

Q. Give reasons. Guard cells play an important role in photosynthesis.

Q.

A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains

1. complex proteins

2. simple proteins

3. fats

4. starch

Q.

Carbohydrates are composed of ____ .

1. carbon and hydrogen

2. carbon and oxygen

3. hydrogen and oxygen

4. carbon, hydrogen and oxygen

Q.

Question 10 (iii)
Mark ‘T’ if the statement is true and ‘F’ if it is false:
(iii) The product of photosynthesis is not a protein.

Q.

How do plants prepare their food? Explain the factors on which the process of photosynthesis depends?

Q.

Question 6 (b)
Fill in the blanks
b) The food synthesised by the plants is stored as __.

Q.

The component of air used in photosynthesis is___________ and the products of photosynthesis is _____________[oxygen/carbon dioxide/nitrogen].

Q.

Stomata open during the daytime because the guard cells:

1. Photosynthesize and produce osmotically active sugars

2. Are thin-walled

3. Are bean-shaped

4. Have to help in gaseous exchange

Q.

Question 4
Give a brief description of the process of synthesis of food in green plants.

Q.

A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains

1. complex proteins

2. simple proteins

3. fats

4. starch

Q.

What is chlorophyll? Where is it present? What is its importance?

Q. How would you show that chlorophyll is necessary for photosynthesis?

Q.

Complete the following equation representing photosynthesis.

Carbon dioxide + Water $\stackrel{SunlightandChlorophyll}{\to }$ ________+________

1. Carbohydrates, Proteins

2. Carbohydrates, Oxygen

3. Proteins, Carbon

4. Carbon, Oxygen

Q.

Which of the following are necessary for photosynthesis?

1. Light and suitable temperature

2. Chlorophyll and water

3. Carbon dioxide

4. All of the above

Q.

The broad base of the leaf is known as

1. Midrib

2. Stoma

3. Chlorophyll

4. Lamina

Q.

Which option correctly fills up the blanks in the following equation?

$\left(i\right)+Water\stackrel{Sunlight+\left(ii\right)}{\to }Glucose+\left(iii\right)$

1. (i) Carbon dioxide, (ii) Chlorophyll, (iii) oxygen

2. (i) oxygen, (ii) Chlorophyll, (iii) Carbon dioxide

3. (i) Oxygen, (ii) Starch, (iii) Chlorophyll

4. (i) Carbon dioxide, (ii) Chlorophyll, (iii) oxygen

Q. Arrange the following processes in the correct sequence they occur during photosynthesis.

1. Light absorption
2. Light Reaction
3. Dark reaction
4. Starch formation

Q.

The main function of the stomata is to let in _______ from the atmosphere for photosynthesis.

​​

1. CO₂

2. O₂

3. None of these

4. N

Q.

Plants lose water through leaves by a process called __ .

Q.

Plants lose water through leaves by a process called __.

Q. Equation of photosynthesis