Photosynthesis in Higher Plants Test

Result

Photosynthesis in Higher Plants Test - 18

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Chloroplast absorb light of wavelength

A
200-300 $$m\mu $$

B
800-1000 $$m\mu $$

C
460-660 $$m\mu $$

D
300-400 $$m\mu $$

Solution

After a photon of light of wavelength ≈680 nm is absorbed by one of the many chlorophyll molecules in one of the light-harvesting complexes (LHCs) of an antenna, some of the absorbed energy is transferred to the pair of chlorophyll molecules in the reaction center. The resultant energized reaction-center chlorophyll donate an electron to a loosely bound acceptor molecule, the quinone Q, on the stromal surface of the thylakoid membrane.
So, the correct answer is option C.
Question 2
1 / -0

In non-cyclic photophosphorylation, the pigment molecule first excited is known as

A
$$P_{680}$$

B
$$P_{700}$$

C
Chlorophyll- b

D
Xanthophyll
Solution
- Green plants and algae use two types of photosystems, PS-I with chlorophyll $$P_{700}$$ in its reaction center and PS-II with $$P_{680}$$ in its reaction center.
- The two photosystems are linked by a chain of electron carrires. Light excites $$P_{680}$$.
- So, the correct answer is option A.
Question 3
1 / -0

Phytol chain is present in

A
Carotenoids

B
Haemoglobin

C
Chlorophyll

D
Phycocyanin

Solution

Magnesium is a constituent of chlorophyll pigment. It is present in the centre of the head of the chlorophyll pigments. Phytol is a constituent of the tail of chlorophyll, which is then converted to phytanic acid and stored in fats.
So, the correct answer is 'Chlorophyll'.
Question 4
1 / -0

Chlorophyll 'a' and 'b' shows maximum absorption in:

A
Blue region

B
Red region

C
Blue and red region

D
Yellow and violet region

Solution

Chlorophyll 'a' is a specific form of chlorophyll used in oxygenic photosynthesis. It absorbs most energy from wavelengths of violet-blue and orange-red light. Chlorophyll 'b' is a form of chlorophyll. It helps in photosynthesis by absorbing light energy. It is more soluble than chlorophyll in polar solvents because of its carbonyl group. Its color is yellow and primarily absorbs blue light.
So, the correct answer is option C.
Question 5
1 / -0

The chlorophyll absorb visible light in the region of which wavelength?

A
400 nm to 500 nm only

B
600 nm to 800 nm only

C
400 nm to 500 nm and 600 nm to 700 nm

D
300 nm to 400 nm only

Solution

Chlorophyll absorbs visible light in the range of 400 nm to 500 nm (violet and blue) and 600 nm to 700 nm (yellow and red).
So, the correct answer is option C.
Question 6
1 / -0

Which region of the visible spectrum of solar radiation are primarily absorbed by carotenoids of the higher plants?

A
Violet and blue

B
Blue and green

C
Green and red

D
Red and violet

Solution

Carotenoids are organic pigments, that are found in the chloroplasts and chromoplasts of plants and some other photosynthetic organisms, including some bacteria and some fungi. It absorbs wavelength in the range of violet and blue spectrum.
Question 7
1 / -0

The light absorbed by the chlorophyll a is at the wave length of

A
400 nm

B
660 nm

C
600 nm

D
Both A and B

Solution

Chlorophyll a is a green pigment found in cyanobacteria and the chloroplasts of algae and plants. It absorbs the wavelength of 400 nm and 660 nm.
So, the correct answer is option D.
Question 8
1 / -0

Which one is $$Cu^{++}$$ containing pigment?

A
Ferredoxin

B
Plastocyanin

C
Plastoquinone

D
Cytochrome

Solution

Ferredoxin is iron sulfur containing protein present on the stromal side of thylakoid membrane. Plastocyanin is a metalloprotein having copper ions as prosthetic group. Plastoquinone is isopronoid derivative that function as electron carrier in chloroplast. Cytochrome is a protein having heme prosthetic group. Correct answer is B.
Question 9
1 / -0

H$$_{2}$$ donor during photosynthesis is

A
NADH

B
NADP

C
ATP

D
NADPH
Solution
- NADPH is the H$$_2$$ donor during the process of photosynthesis. NADPH is the reduced form of NADP$$^+$$.
- In photosynthetic organisms, NADPH is produced by ferredoxin NADP$$^+$$ reductase in the last step of the electron chain of the light reactions of photosynthesis.
- It is used as reducing power for the biosynthetic reactions in the Calvin cycle to assimilate carbon dioxide. It is used to help turn the carbon dioxide into glucose.
So, the correct answer is option D.
Question 10
1 / -0

Number of chlorophyll arranged per reaction centre in the light harvesting complex are

A
100

B
200

C
400

D
600

Solution

A photosynthetic reaction center is a complex of several proteins, pigments, and other co-factors assembled together to execute the primary energy conversion reactions of photosynthesis. 200 molecules of chlorophyll are arranged in the reaction center.
So, the correct answer is option B.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Photosynthesis in Higher Plants Test - 18

Result

Photosynthesis in Higher Plants Test - 18

Score

-

Rank

-

SHARING IS CARING

Question 1

200-300 $$m\mu $$

800-1000 $$m\mu $$

460-660 $$m\mu $$

300-400 $$m\mu $$

Solution

Question 2

$$P_{680}$$

$$P_{700}$$

Chlorophyll- b

Xanthophyll

Solution

Question 3

Carotenoids

Haemoglobin

Chlorophyll

Phycocyanin

Solution

Question 4

Blue region

Red region

Blue and red region

Yellow and violet region

Solution

Question 5

400 nm to 500 nm only

600 nm to 800 nm only

400 nm to 500 nm and 600 nm to 700 nm

300 nm to 400 nm only

Solution

Question 6

Violet and blue

Blue and green

Green and red

Red and violet

Solution

Question 7

400 nm

660 nm

600 nm

Both A and B

Solution

Question 8

Ferredoxin

Plastocyanin

Plastoquinone

Cytochrome

Solution

Question 9

NADH

NADP

ATP

NADPH

Solution

Question 10

100

200

400

600

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.