The Chloroplast

Q.

What is the difference between photosystem 1 and photosystem 2?

Q. When are the chloroplast aligned with the flat surfaces parallel to the walls ? When are they aligned perpendicular to the incident light?

Q.

Stroma in the chloroplasts of the higher plants contains?

1. Light-independent reaction enzymes

2. Chlorophyll

3. Ribosomes

4. Light-dependent reactions

Q.

An elaborate network of filamentous proteinaceous structures which help in the maintenance of the cell shape is called-

1. cytoplasm

2. cytoskeleton

3. endoplasmic reticulum

4. Golgi complex

Q.

Which is the most abundant plant pigment in the world ?

Q. The outer membrane of chloroplast is

1. highly permeable to ions and solute
2. less permeable to ions and solutes
3. equipped with chlorophyll
4. none of the above

Q.

What is lumen in plastids?

Q. In plants, most of the photosynthesis takes place in

1. green and red regions of the spectrum
2. red and yellow regions of the spectrum
3. blue and red regions of the spectrum
4. blue and green regions of the spectrum

Q. In a chloroplast, little stacks of membranous sacs are called _____. Each individual sac is called a ______.

1. granum, thylakoid
2. thylakoid, granum
3. thylakoid, lamellae
4. thylakoid, stroma

Q. The core element of Chlorophyll is

1. Mn
2. Mg
3. Zn
4. Fe

Q. Photosynthesis takes place in cells found in the leaves of plants. In which plant cell organelle does photosynthesis take place?

1. Stomata
2. Mitochondria
3. Nucleus
4. Chloroplasts
5. Ribosomes

Q. Which of the following monomers are produced, when lipids are broken down by lipase?
A. Nucleotides
B. Amino acids
C. Glycerol
D. Fatty acids

1. A and C only
2. C and D only
3. C only
4. D only

Q. Which of the following structure-function pairs is mismatched?

1. Golgi body-secretion of cell products
2. Lysosome-intracellular digestion
3. Ribosome-protein synthesis
4. elaioplasts-store proteins

Q. Within chloroplasts, light is captured by

1. Grana within cisternae
2. thylakoids within grana
3. Cisternae within grana
4. grana within thylakoids

Q. The most abundant protein in the plant world is found in

1. mitochondria
2. roots
3. chloroplasts
4. viruses

Q. How many chlorophylls are there in one quantasome?

1. 130
2. 230
3. 330
4. 430

Q. Stroma is the ground matrix of

1. Lysosomes
2. Oxysomes
3. Ribosomes
4. Chloroplast.

Q. Which is NOT a characteristic of chloroplasts?

1. A chloroplast is surrounded by a double membrane.
2. Chlorophyll absorbs solar energy that is used to form chemical bonds.
3. A membrane inside a chloroplast is called a thylakoid.
4. Chlorophylls are found in the fluid stroma of the chloroplast.

Q.

Can algae survive in hot water?

Q.

The carbon dioxide and oxygen balance in the atmosphere are due to:

1. Photosynthesis

2. Respiration

3. Leaf anatomy

4. Photorespiration

Q. Plants are removed from patient's room at night because

1. They release more $C{O}_2$ at night
2. They produce $C{O}_2$ all the time but release $O_2$ also in the day time
3. They consume $O_2$ at night
4. They do not photosynthesise at night, therefore fail to liberate $O_2$ in the room and hence their presence will
   increase $C{O}_2$ concentration.

Q. Chloroplasts do not align themselves with their flat surfaces parallel to the the walls ? What does this flat surface mean?

Q. Where are photosynthetic pigments present in chloroplast?

Q. You would recollect from previous unit that the mesophyll cells in the leaves, have a large number of chloroplasts. Usually the chloroplasts align themselves along the walls of the mesophyll cells, such that they get the optimum quantity of the incident light. When do you think the chloroplasts will be aligned with their flat surfaces parallel to the walls ? when would they be perpendicular to the incident light ?

Q. A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.
Draw a neat diagram of a chloroplast and label its parts.

Q. In a chloroplast the highest number of protons are found in:

1. Stroma
2. Lumen of thylakoids
3. Inter membrane space
4. Antenna complex

Q.

Where does the periplasmic space occur in cells?

Q. Chlorophyll in chloroplasts is located in:

1. Grana
2. Pyrenoid
3. Both (1) and (3)
4. Stroma

Q. The site of primary photochemical reaction in a chloroplast is.

1. Stroma
2. Grana
3. Quantasome
4. Stroma lamellae.

Q. This question consist of two statements, assertion and reason. While answering this question you are required to choose any one of the following five responses.

Assertion: Dark reaction occurs only at night in the stroma of chloroplast.

Reason: $C{O}_2$ fixation occurs only during $C_3$ cycle.