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11th Biology Monthly Test - 2 ( Bio - Botany - Photosynthesis )

MABS Institution

11th Biology Monthly Test - 2 ( Bio - Botany - Photosynthesis )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Identify true statement regarding the light reaction of photosynthesis?

Splitting of water molecule is associate with PS I.
PS I and PS II involved in the formation of NDPH + H⁺
The reaction center of PS I is Chlorophyll a with the absorption peak at 680 nm.
The reaction center of PS II is Chlorophyll a with the absorption peak at 700 nm.

Kranz anatomy is characteristic of _________ plants.

C₃
C₂
C₄
C₃ and C₄

Choose the plant showing CAM cycle.

Potato
Wheat
Opuntia
Maize

Complete the following.
\(PEP+CO_2 \xrightarrow[]{A}B\)
Identify A and B

A - PEP carboxylase
B - Oxaloacetic acid
A- RUBP carboxylase
B - Oxaloacetic acid
A - Transferase
B - Oxaloacetic acid
A - PEP carboxylase
B - Succinic acid

Kranz anatomy is one ofthe characteristics of the leaves of

Sugarcane
Wheat
Potato
Mustard

The correct sequence of flow of electrons in the light reaction is

PS II, plastoquinone, cytochrome, PS I, ferredoxin
PS I, plastoquinone, cytochrome, PS II ferredoxin
PS II, ferredoxin, plastoquinone, cytochrome, PS I
PS I, plastoquinone, cytochrome, PS II ferredoxin

Select the correct pair
I. Chlorophyll a - Pyrrole II carbon 3 attached to aldehyde group
II. Chlorophyll b - Resemble Chlorophyll a, lacks Mg
III. Pheophytin - Pyrrole II Carbon 3 attached to Methyl group
IV. Phycobilin . Have neither Mg nor Phytol chain

I, II, III are correct
IV only correct
II only correct
I only correct

For every CO₂ molecule entering the C₃ cycle, the number of ATP & NADPH required

2ATP + 2NADPH
2ATP + 3NADPH
3ATP + 2NADPH
3ATP + 3NADPH

The quantum yield for reduction of one CO₂molecule is___________.

14%
10%
12%
8%

______________is the first stable product of C₃ cycle.

DHAP
PGA
Succinic acid
fumaric acid

Part - B

Generic 2 - Answer All Question

What is non-oxygenic photosynthesis?

What is Bioluminescence?

What are shield pigments?
Define absorption spectrum.

Define action spectrum.

What is photophosphorylation?

Why is cyclic electron transport / PSI considered to be earlier formed in evolution?

Part - C

Generic 3 - Answer All Question

What is the significance of photosynthesis?

Differentiate PSI and PSII?

What is of Kranz Anatomy?

What is the significance of C₄ cycle?
Draw the Wilmott's bubble and label the parts.

What is the significance of RUBISCO?

What are Carotenoids?

Part - D

Generic 5 - Answer All Question

Explain external factors which affect the rate of photosynthesis?

A Science teacher told students that "Don't put the plant in green light for long time".
What happens if a plant is exposed to green light for a long time.

"Photosynthesis protects us from harmful ultraviolet radiation of sun" comment on the statement

Differentiate C₃ Plants and C₄ Plants.

Explain Chemiosmotic theory.

Differentiate photosynthesis in plants and Bacterial photosynthesis.

Explain Calvin Cycle/ C₃ Cycle.

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