The Chloroplast
Trending Questions
Q. In leaves, the chloroplasts align themselves along the walls of the mesophyll cells
- to prevent sunlight from falling on the chloroplast
- none of the above
- to provide optimum sunlight for photosynthesis
- to facilitate the dark reaction
Q.
Do chloroplasts have DNA?
Q. Choose the correct statement(s) from the following about chlorophyll :
I. Four pyrrole rings are attached to Mg by their C atoms
II. Cyclopentanone ring is attached to the tetra-isoprenoid alcohol chain.
III. Chlorophyll appears green due to absorption of red and blue light.
IV. Excitation of chlorophyll by light is a photochemical reaction
I. Four pyrrole rings are attached to Mg by their C atoms
II. Cyclopentanone ring is attached to the tetra-isoprenoid alcohol chain.
III. Chlorophyll appears green due to absorption of red and blue light.
IV. Excitation of chlorophyll by light is a photochemical reaction
- I, II, III
- I, II, IV
- III, IV
- II, III, IV
Q. Grana refers to
- Stacks of thylakoids in plastids of higher plants
- A constant in quantum equation
- Glycolysis of glucose
- By – product of photosynthesis
Q. Thylakoid is
- the aqueous fluid enclosed by the inner membrane of the chloroplast
- the site for the dark reaction of photosynthesis
- a flattened disc-like sac in chloroplast
- the site of protein synthesis in chloroplasts
Q. Which of the following is not a constituent of chloroplast?
- Stroma lamellae
- Cristae
- Stroma
- Ribosomes
Q. Assertion: The stromal thylakoids are rich in both PS I and PS II.
Reason: The granal membranes are rich in ATP synthetase.
Reason: The granal membranes are rich in ATP synthetase.
- Both the assertion and reason are false.
- Both reason and assertion are true and the reason is the correct explanation for the assertion.
- Both the reason and assertion are true but the reason is not the correct explanation of the assertion.
- Assertion is true but the reason is false.
Q.
Assertion (A): Chloroplasts are present in all plant cells.
Reason (R): Chloroplasts are present in cells present in the parts that are exposed to sunlight.
- Both A and R are correct and R explains A
- Both A and R are correct and R does not explain A
- A is incorrect but R is correct
- Both A and R are incorrect
Q. Which of the following organelles is bound by a double membrane system?
- Golgi apparatus
- Central vacuole
- Chloroplast
- Ribosome
Q. Green pigment (chlorophyll) is present in
- chromoplast
- chloroplast
- ribosome
- lysosome
Q.
Assertion (A): Chloroplasts are present in all plant cells.
Reason (R): Chloroplasts are present in cells present in the parts that are exposed to sunlight.
- Both A and R are correct and R explains A
- Both A and R are correct and R does not explain A
- A is incorrect but R is correct
- Both A and R are incorrect
Q. Which of the following is not a constituent of chloroplast?
- Stroma lamellae
- Ribosomes
- Stroma
- Cristae
Q. Choose the correct statement(s) from the following about chlorophyll :
I. Four pyrrole rings are attached to Mg by their C atoms
II. Cyclopentanone ring is attached to the tetra-isoprenoid alcohol chain.
III. Chlorophyll appears green due to absorption of red and blue light.
IV. Excitation of chlorophyll by light is a photochemical reaction
I. Four pyrrole rings are attached to Mg by their C atoms
II. Cyclopentanone ring is attached to the tetra-isoprenoid alcohol chain.
III. Chlorophyll appears green due to absorption of red and blue light.
IV. Excitation of chlorophyll by light is a photochemical reaction
- I, II, III
- III, IV
- I, II, IV
- II, III, IV
Q. Photosynthetic pigments are located in the chloroplast in
- Intra thylakoid space
- Thylakoid membranes
- Inter membrane space
- Inner membrane of envelope.