Photosynthesis in Autotrophs

Q. Photosynthesis occurs with the help of a molecule present in chloroplasts called .

1. Haemoglobin
2. Chlorophyll
3. Melanin
4. Carbohydrate

Q. Complete the photosynthesis reaction:
+ Water $\stackrel{Sunlight,Cholorophyll}{\to }$ + Oxygen

1. Carbon dioxide
2. Hydrogen
3. Glucose
4. Starch

Q. Glucose is the product of photosynthesis.

1. False
2. True

Q.

Which pigment is necessary in order for plants to convert carbon dioxide and water, in the presence of sunlight, into oxygen and glucose?

1. Chlorophyll

2. Haemoglobin

3. Melanin

4. Carotenoids

Q. In the set up shown above, the role of potassium hydroxide and sodium bicarbonate is to ___ and ___ respectively.

1. provide necessary nutrients, absorb carbon-dioxide
2. provide carbon-dioxide, absorb carbon-dioxide
3. absorb carbon-dioxide, provide oxygen
4. absorb heat from the plant, provide carbon dioxide

Q. Chloroplasts absorb energy from the sun and use it to power the food making process.

1. False
2. True

Q.

Name the simple sugar found in plant tissues which is also a product of photosynthesis.

1. Cellulose

2. Starch

3. Glucose

4. Sucrose

Q. Match the parts of the cross section of leaf depicted in the image with the descriptions given.

a. Stomata
b. Mesophyll
c. Lower epidermis
d. Upper epidermis
e. Cuticle

1. i - e, ii - d, iii - b, iv - c, v - a
2. i - a, ii - d, iii - b, iv - c, v - e
3. i - a, ii - b, iii - d, iv - c, v - e
4. i - a, ii - b, iii - d, iv - e, v - c

Q.

Name the simple sugar found in plant tissues which is also a product of photosynthesis.

1. Cellulose

2. Starch

3. Glucose

4. Sucrose

Q. Refer to the setup and select the correct statements.

1. Aim of this experiment is to prove that oxygen is released during photosynthesis.
2. Aim of this experiment is to prove that CO₂ is released during photosynthesis.
3. Hydrilla performs respiration and releases carbon dioxide.
4. Hydrilla performs photosynthesis and releases oxygen.