Structure of Chloroplasts

Q.

Chloroplasts are found in the guard cells of stomata.

True or False?

1. True

2. False

Q. What are the cells that contain chloroplasts?

1. Phloem
2. Mesophyll
3. Xylem
4. All of the above

Q.

Which structure is unique to plant cells?

Q. Which one of the following pairs is not correctly matched?

1. Cristae – The “shelves” formed by the folding of the inner membrane of the mitochondrian.
2. Plasmodesmata – The membrane surrounding the vacuole in plants.
3. Grana – Membrane bound discs in chloroplasts that contain chlorophylls and carotenoids.
4. Middle Lamella – Layer between adjacent cell walls in plants derived from cell plate.

Q.

Give examples of two organelles that have their own DNA.

Q. In a typical leaf, photosynthesis occurs mainly in
(a) cuticle
(b) epidermis
(c) palisade mesophyll
(d) spongy mesophyll

Q. Which one of the following four structures is correctly matched with the accompanying description?

1. Plasma membrane – Outer layer of cellulose or chitin is absent
2. Mitochondria – Bacteria like elements with inner membrane forming sacs containing chlorophyll, found in plant cell and algae.
3. Chloroplasts – Bacteria like elements with inner membrane highly folded
4. Golgi apparatus – Stacks of flattened vesicles

Q. Chlorophyll is located in the_______ of chloroplast.
a. inner membrane
b. granum
c. stroma
d. outer membrane (1 Mark)

Q. Chlorophyll in chloroplasts is located in

1. Grana

2. Pyrenoid

3. Stroma

4. Both A and B

Q. Which one of the following features of plant leaves plays an important part in photosynthesis?
(a) Thick cuticle
(b) Spongy mesophyll
(c) Chloroplasts
(d) Stomata

Q. Which one of the following features of plant leaves plays an important part in photosynthesis?
(a) Thick cuticle
(b) Spongy mesophyll
(c) Chloroplasts
(d) Stomata

Q. Select the wrong statement from the following

1. Both chloroplasts and mitochondria contain an inner and outer membrane
2. Both chloroplasts and mitochondria contain DNA
3. The chloroplasts are generally much larger than the mitochondria.
4. Both chloroplasts and mitochondria have an internal compartment, the thlakoid space bounded by the thylakoid membrane.