Photosynthesis

Q.

The food prepared by plants is stored in the form of _________.

1. glucose
2. fats
3. starch
4. maltose

Q.

Why is sunlight necessary for photosynthesis?

Q.

Examples for plants that store food in their leaves

Q.

Which of the following is not required for photosynthesis?

1. Chlorophyll

2. Carbon dioxide

3. Water

4. Oxygen

Q.

Question 11

Will a leaf taken from a potted plant kept in a dark room for a few days turn blue-black when tested for starch? Give reason for your answer.

Q.

Where does photosynthesis occur?

Q. is the process by which green plants make food in the presence of sunlight.

1. Food synthesis
2. Respiration
3. Photosynthesis
4. Transpiration

Q.

The food prepared in the leaves is stored as _________.

1. None of these

2. Cellulose

3. Starch

4. Fats

Q.

Glucose produced during the process of photosynthesis is stored in the form of _____ in the plants

1. Starch

2. Cellulose

3. Carbohydrates

4. None of the above

Q.

The gas that is evolved during photosynthesis is

1. Oxygen

2. Hydrogen

3. Nitrogen

4. Carbon Dioxide

Q.

Question 5

Read the following sentences about photosynthesis.
(i) Sunlight, carbon dioxide, chlorophyll and water are necessary.
(ii) Oxygen is absorbed.
(iii) Leaves carry out photosynthesis.
(iv) Proteins are made during photosynthesis.
Choose the correct pair of sentences that is true to photosynthesis.
(a) (iii) and (iv) (b) (i) and (iii) (c) (ii) and (iv) (d) (i) and (iv)

Q.

What is the process by which water evaporates from the leaf surface?

1. Transpiration

2. Expiration

3. Respiration

4. Perspiration

Q.

Question 10

Boohji wanted to test the presence of starch in leaves. He performed the following steps:
(i) He took a leaf and boiled it in water.
(ii) He placed the leaf in a petri dish and poured some iodine over it.
He did not get the expected result. Which step did he miss? Explain.

Q.

Complete the following equation representing photosynthesis.

Carbon dioxide + Water $\stackrel{Sunlight,Chlorophyll}{\to }$________+________

1. Carbon, Oxygen

2. Proteins, Carbon

3. Carbohydrates, Proteins

4. Carbohydrates, Oxygen

Q.

All green plants can perform photosynthesis.

1. True

2. False

Q.

Which of the following raw material is available in the air for photosynthesis?

1. Oxygen

2. Carbon dioxide

3. Nitrogen

4. Hydrogen

Q.

Which of the following nutrient is produced during the process of photosynthesis?

1. Sugars

2. Glucose

3. Carbohydrates

4. All of the above

Q. Identify the process shown in the given picture.

Q. Which one of the following is not an insectivorous plant?​

1. Cactus​
2. Bladderwort​
3. Pitcher plant​
4. Venus flytrap​

Q.

____________ is an essential pigment for photosynthesis.

1. Cytoplasm

2. Nucleoplasm

3. Centrioles

4. Chlorophyll

Q.

What is the mode of nutrition in green plants?

1. Sunlight

2. Water

3. Food

4. Air

Q.

All green plants have ______ mode of nutrition.

1. heterotrophic

2. autotrophic

3. saprophytic

4. parasitic

Q.

Plants prepare food by the process of ___

Q.

Following image illustrates a yellow thread like plant. What is the mode of nutrition and what is its name?

1. Parasitic, Cuscuta (Amarbel)

2. Carnivorous, Sundew

3. Symbiotic, Sundew

4. Symbiotic, Cuscuta (Amarbel)

Q.

Which organelle is considered as the food factory of the plant cell?

1. roots

2. leaves

3. fruits

4. flowers

Q.

Which gas is important for Plant Growth?

Q. Leaves are green in colour due to the presence of the pigment .

1. xanthophyll
2. chlorophyll
3. hemoglobin

Q. The plants eventually die when kept in a dark room. This shows the importance of ______.

1. food
2. water
3. air
4. sunlight

Q.

Boojho wanted to test the presence of starch in leaves. He performed the following steps.

(1) He took a leaf and boiled it in water.

(2) He placed the leaf in a petri dish and poured some iodine over it. He did not get the expected result. Which step did he miss? Explain.

Q.

Glucose produced by the plants during photosynthesis is a __________

1. carbon and oxygen

2. carbon and hydrogen

3. hydrogen and oxygen

4. carbon, hydrogen and oxygen