Photosynthesis in Higher Plants Test

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Photosynthesis in Higher Plants Test - 70

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Question 1
1 / -0

Chlorophyll a absorbs maximum of

A
Red light

B
Blue light

C
Green light

D
Yellow light
Solution
- Chlorophyll a absorbs light in the blue-violet region while chlorophyll b absorbs red-blue light. Chlorophyll reflects green light from its surface and that’s why it appears green in colour.
So the correct answer is 'Blue light'.
Question 2
1 / -0

Four carbon acid Aspartate is transported from mesophyll cells to bundle sheath cell in which of the following $$C_4$$ plant.

A
Sugarcane

B
Panicum

C
A triplex

D
Paddy

Solution

Four carbon Aspartate is transported from mesophyll cells to bundle sheath cell in sugarcane and maize.
This Carbon fixation method with 4 carbon acid is to reduce the chances of photorespiration. This pathway builds up high concentration of carbon dioxide in the Chloroplast of the bundle sheath cells.
So the correct answer is ' Sugarcane and maize'.
Question 3
1 / -0

In $$C_4$$plants, mesophyll cells and bundle sheath cells are specialised to perform respectively.

A
Light reaction and dark reaction

B
Dark reaction and light reaction

C
Light reaction and photorespiration

D
Photorespiration and dark reaction.

Solution

The mesophyll cells in C4 plants are highly specialized to do the light-dependent reaction of photosynthesis whereas the bundle sheath cells are specialised to perform light-independent reactions.

So, the correct option is, 'Light reaction and dark reaction'.
Question 4
1 / -0

If in a green plant, the rates of respiration and photosynthesis are equal, the plant will be?

A
Taking in carbon dioxide

B
Giving out oxygen

C
Taking in carbon dioxide and giving out oxygen

D
Giving out water vapour

Solution

The rate of photosynthesis and respiration are equal for a plant when it intakes the same amount of carbon dioxide and gives out the exact same amount of oxygen. This leads to self-sustainability. This phenomenon occurs because, after photosynthesis, oxygen is given out which will be utilized in respiration and after respiration carbon dioxide is given out which will be utilized in photosynthesis.
So, the correct option is 'Taking in carbon dioxide and giving out oxygen'.
Question 5
1 / -0

The sequence of cell organelles during photorespiration is

A
Chloroplast - Golgi bodies - Mitochondria

B
Chloroplast - Rough endoplasmic reticulum - Dictyosomes

C
Chloroplast -Peroxisomes- Mitochondria

D
Chloroplast - Vacuole - Peroxisome

Solution

Photorespiration is a process which takes place in C3 plants. It is a wasteful pathway in which ATP produced by photosynthesis is used in oxygenation of RuBisCO into RuBP. The process begins at chloroplast under light conditions followed to peroxisomes and then to mitochondria.

So, the correct answer is 'Chloroplast -Peroxisomes- Mitochondria'.
Question 6
1 / -0

Formation of NADPH occurs during

A
Cyclic photophosphorylation

B
Non - cyclic photophosphorylation

C
Oxidative photophosphorylation

D
Substrate level phosphorylation

Solution

Cyclic photophosphorylation exists to provide energy for the calvin cycle and involves only p680 in photosystem ll and its product is ATP. Non-cyclic photophosphorylation is carried out using p700 in photosystem l and p680 in photosystem ll and it produces NADPH and ATP.
So, the correct option is 'Non - cyclic photophosphorylation'.
Question 7
1 / -0

Plants which show both calvin and Hatch slack pathways are :

A
$$C_3$$ plants

B
$$C_4$$ plants

C
Both $$C_3$$ and $$C_4$$

D
Both $$C_3$$ and $$CAM$$ plants

Solution

C$$_4$$ pathway is the alternate pathway of C$$_4$$ cycle to fix CO$$_2$$. In this cycle, the first formed stable compound is a 4 carbon compound ( oxaloacetic acid ). Hence it is called C$$_4$$ cycle. The path way is also called as Hatch and Slack as they worked out the pathway in 1966 and it is also called as C$$_4$$ dicarboxylic acid pathway.
In C$$_4$$ plants, the light-dependent reactions and the Calvin cycle are physically separated, with the light-dependent reactions occurring in the mesophyll cells (spongy tissue in the middle of the leaf) and the Calvin cycle occurring in special cells around the leaf veins. These cells are called bundle-sheath cells.
So, the correct option is 'C$$_4$$ plants'.
Question 8
1 / -0

The chlorophyll absorbs light in the range of visible light.

A
$$400$$nm-$$500$$nm

B
$$600$$nm-$$800$$nm

C
$$400$$nm-$$500$$nm and $$600$$nm-$$700$$nm

D
$$300$$nm-$$400$$nm
Solution
Chlorophyll a has approximate absorbance maxima of 430 nm and 662 nm, while chlorophyll b has approximate maxima of 453 nm and 642 nm.
So, the correct answer is '400nm-500nm and 600nm-700nm'
Question 9
1 / -0

The key compound of Calvin cycle is?

A
PGA

B
PGAL

C
DHAP

D
DPGA

Solution

Calvin cycle is a biochemical reaction in which CO$$_2$$ is fixed with the help of ATP and NADPH$$_2$$ formed in light reaction, to form carbohydrates. The path of carbon during the reaction was studied by Melvin Calvin. Three molecules of additive 6C compound immediately split up by hydrolysis into six molecules of 3C compound called 3-phosphoglyceric acid (3-PGA). Six molecules of 3_PGA are further phosphorylated by ATP and converted into six molecules of 1,3-diphosphoglyceric acid (1,3-DPGA). By using ATP and NADPH$$_2$$ formed in the light reaction, CO$$_2$$ is reduced to form organic food in the form of 3-phosphoglyceraldehyde 3C (PGAL) and further get converted into glucose (6C) which can be utilized directly in plant metabolism or can be stored in the form of starch.
So the correct option is 'PGAL'.
Question 10
1 / -0

Consider following statements A & B
A - The enzyme acts on 'N' terminal of polypeptide chain
B - The enzyme acts on 'C' terminal of a polypeptide chain
Choose the correct option w.r.t the digestive juices which contain these enzymes

A
A- Succus entericus B - Pancreatic juice

B
A - Intestinal juice B - Bile juice in duodenum

C
A - Pancreatic juice B - Intestinal juice

D
A - Intestinal juice B - Gastric juice

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Re-Attempt Weekly Quiz Competition

Photosynthesis in Higher Plants Test - 70

Result

Photosynthesis in Higher Plants Test - 70

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Rank

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SHARING IS CARING

Question 1

Red light

Blue light

Green light

Yellow light

Solution

Question 2

Sugarcane

Panicum

A triplex

Paddy

Solution

Question 3

Light reaction and dark reaction

Dark reaction and light reaction

Light reaction and photorespiration

Photorespiration and dark reaction.

Solution

Question 4

Taking in carbon dioxide

Giving out oxygen

Taking in carbon dioxide and giving out oxygen

Giving out water vapour

Solution

Question 5

Chloroplast - Golgi bodies - Mitochondria

Chloroplast - Rough endoplasmic reticulum - Dictyosomes

Chloroplast -Peroxisomes- Mitochondria

Chloroplast - Vacuole - Peroxisome

Solution

Question 6

Cyclic photophosphorylation

Non - cyclic photophosphorylation

Oxidative photophosphorylation

Substrate level phosphorylation

Solution

Question 7

$$C_3$$ plants

$$C_4$$ plants

Both $$C_3$$ and $$C_4$$

Both $$C_3$$ and $$CAM$$ plants

Solution

Question 8

$$400$$nm-$$500$$nm

$$600$$nm-$$800$$nm

$$400$$nm-$$500$$nm and $$600$$nm-$$700$$nm

$$300$$nm-$$400$$nm

Solution

Question 9

PGA

PGAL

DHAP

DPGA

Solution

Question 10

A- Succus entericus B - Pancreatic juice

A - Intestinal juice B - Bile juice in duodenum

A - Pancreatic juice B - Intestinal juice

A - Intestinal juice B - Gastric juice

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