Photosynthesis in Higher Plants Test

Result

Photosynthesis in Higher Plants Test - 83

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

If 8 carbon atoms have deviated from the Calvin cycle in photorespiration, then what is the total carbon loss that occurs at the end of the reaction:-

A
100%

B
75%

C
25%

D
0%

Solution

Photorespiration is a process that certain plants undergo and it involves the loss of carbon. It wastes oxygen and results in a loss of carbon in the form of carbon dioxide production.
So, the correct answer is '100%'.
Question 2
1 / -0

Which of the following is not related with photosynthesis in purple sulphur bacteria :-

A
Requirement of hydrogen doner

B
Requirement of light

C
Release of oxygen

D
Use of atmospheric $${ CO }_{ 2 }$$

Solution

Purple sulfur bacteria are proteobacteria, that are phototropic (Dependent upon light for the process of photosynthesis). They are anaerobic and are mostly found in hot springs or the stagnant water of lakes, ponds etc. They do not require water for the process of oxidation and reduction and thus does not produce oxygen.
So, the correct option is 'Release of oxygen'.
Question 3
1 / -0

Consider the process that takes place in the given diagram. How many protons are passed from A to B region for the production of 12 ATP molecules?

A
12 $$H^+$$

B
36 $$H^+$$

C
24 $$H^+$$

D
6 $$H^+$$
Question 4
1 / -0

On an average, for every $$CO_2$$ molecule fixed by photosynthesis, how many molecules of oxygen are released ?

A
1

B
2

C
3

D
6

Solution

There is only 1 net carbon produced to play with for each turn. To create 1 surplus, G3P requires 3 carbons, and therefore 3 turns of the Calvin cycle. To make one glucose molecule (which can be created from 2 G3P molecules) would require 6 turns of the Calvin cycle and one CO2.
So, the correct option is, '1'.
Question 5
1 / -0

Choose the correct answer from the alternatives given.
Which of the following statements is not true about $$C_3$$ and $$C_4$$ plants?

A
$$C_3$$ plants are more successful in mild climates than $$C_4$$ plants

B
$$C_4$$ plants contain chloroplasts only in part of their mesophyll cells

C
$$C_3$$ plants fix $$CO_2$$ in the mesophyll cells

D
$$C_3$$ plants make glucose in the bundle sheath cells

Solution

C3 plants make glucose by Calvin cycle that operates only in the mesophyll cells while in C4 plants, photosynthesis takes place in a chloroplast of a thin-walled mesophyll cell and a 4-carbon acid is handed off to a thick-walled bundle sheath cell where the Calvin cycle occurs in a chloroplast of that second cell. This makes C4 plants escape photo-respiration (as photo-respiration is not beneficial for photosynthesis). C4 plants exist in harsh climates and thrive on long growing seasons with lots of access to sunlight.
So, the correct option is, 'C3 plants make glucose in the bundle sheath cells'.
Question 6
1 / -0

Choose the correct answer from the alternatives given.
Which of the following statements is not true about the noncyclic electron pathway?

A
Absorbs photons into photosystem-I

B
Absorbs photons into photosystem-II

C
Produces NADPH

D
Produces carbohydrates through carbon dioxide fixation

Solution

Calvin cycle produces carbohydrates through carbon-di-oxide fixation. The photosystems 1 and 2 are involved in the production of ATP by electron transport and carry out the primary photochemistry of photosynthesis. Photosystem-I also produces NADPH.
So, the correct option is, 'Produces carbohydrates through carbon dioxide fixation'.
Question 7
1 / -0

Which of the following techniques has been most useful for investigating the Calvin cycle?

A
Flash light experiment

B
X-rays technique

C
Radioactive isotope technique

D
None of these

Solution

Calvin, Benson and Bassham utilised C¹⁴(with long life) to trace the path of carbon in photosynthesis. Calvin was awarded Nobel Prize in 1961 in recognition to his work with C^l4 isotope. He discovered the cycle involved in carbon assimilation, known as Calvin cycle or C₃-cycle.
So, the correct option is, 'Radioactive isotope technique'.
Question 8
1 / -0

The final acceptor of electrons during the noncyclic electron pathway is

A
PS-I

B
ATP

C
PS-II

D
NADP

Solution

The electrons move through definite stages in the non-cyclic electron pathway. Firstly, the photolysis of water occurs, from which two electrons are released. The electrons pass through the electron transport molecules the cytochrome complex and then the photosystem I. Which further deliver it to the NADP that acts as the final electron acceptor.
So, the correct option is. 'NADP'.
Question 9
1 / -0

Continued evolution of $$O_2$$ in suspension of an isolated chloroplast in light in the presence of ferric salt, violate dyes, etc. is called

A
Oxygenation

B
Blackmans reaction

C
Hills reaction

D
Emerson effect

Solution

The Hill reaction is defined as the photoreduction of an electron acceptor by the hydrogens of water, with the evolution of oxygen. In vivo, or in the organism the final electron acceptor is NADP⁺. We can measure the rate of the Hill reaction in isolated chloroplasts. first demonstrated by Robert Hill in 1939, in which illuminated chloroplasts evolve oxygen when incubated in the presence of an artificial electron acceptor (e.g. Ferricyanide). The reaction is a property of photosystem II.
So, the correct option is, 'Hills reaction'.
Question 10
1 / -0

During photorespiration, when two $$O_2$$ molecules react with $$2$$ moles of RUBP then how many $$3-PGA$$ molecules are formed from $$2$$ molecules of $$2$$ - phosphoglycolate

A
$$2$$

B
$$1$$

C
$$3$$

D
$$4$$
Solution
Correct option: A

Explanation:
During photorespiration, two molecules of RuBP reacts with two molecules oxygen moelcules and form into 2 molecules of Phosphoglycolic acid (C2) and 2 molecules phosphoglyceric acid(C3).
These two molecules of phosphoglycolic acid undergo sequence of biochemical reactions and form into 2 molecules of phosphoglyceric acid (3PGA).
Thus, the correct option is A - ‘2’.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Photosynthesis in Higher Plants Test - 83

Result

Photosynthesis in Higher Plants Test - 83

Score

-

Rank

-

SHARING IS CARING

Question 1

100%

75%

25%

0%

Solution

Question 2

Requirement of hydrogen doner

Requirement of light

Release of oxygen

Use of atmospheric $${ CO }_{ 2 }$$

Solution

Question 3

12 $$H^+$$

36 $$H^+$$

24 $$H^+$$

6 $$H^+$$

Question 4

1

2

3

6

Solution

Question 5

$$C_3$$ plants are more successful in mild climates than $$C_4$$ plants

$$C_4$$ plants contain chloroplasts only in part of their mesophyll cells

$$C_3$$ plants fix $$CO_2$$ in the mesophyll cells

$$C_3$$ plants make glucose in the bundle sheath cells

Solution

Question 6

Absorbs photons into photosystem-I

Absorbs photons into photosystem-II

Produces NADPH

Produces carbohydrates through carbon dioxide fixation

Solution

Question 7

Flash light experiment

X-rays technique

Radioactive isotope technique

None of these

Solution

Question 8

PS-I

ATP

PS-II

NADP

Solution

Question 9

Oxygenation

Blackmans reaction

Hills reaction

Emerson effect

Solution

Question 10

$$2$$

$$1$$

$$3$$

$$4$$

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.