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Class 10 Science
Life Processes
Quiz 3
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Mesophyll consists of :
0%
Spongy parenchyma cell
0%
Palisade parenchyma cell
0%
Both (A) and (B)
0%
None of these
Each stoma is guard by
0%
Guard cell
0%
Palisade cell
0%
Mesophyll cell
0%
Parenchyma cell
Leaf is made up of:
0%
Palisade cells
0%
Parenchyma cell
0%
Mesophyll cell
0%
Guard cell
Xerophytes have
0%
Sunken stomata
0%
Stomata on one side of the leaf
0%
No stomata
0%
Stomata on both sides of the leaf
Each guard cell contains:
0%
Chloroplasts
0%
Leucoplasts
0%
Oil and protein granules
0%
Starch
Stomata controls:
0%
The loss of food material from the plant
0%
The loss of water from the plant
0%
The loss of energy from the plant
0%
The loss of air from the plant
If the intensity of light is increased, the rater of photosynthesis:
0%
Increases into certain limit
0%
Decreases into certain limit
0%
Increase and decreases at regular interval
0%
Remain the same
The oxygen in photosynthesis is released from
0%
Carbohydrate
0%
\(H_2O\)
0%
\(CO_2\)
0%
Chlorophyll
Photosynthesis proceeds in a sequence of –
0%
Dark phase and light phase
0%
Light phase and dark phase
0%
Light phase alone
0%
Dark phase alone
In the light phase of photosynthesis, there is the formation of –
0%
\(NADPH_2\)
0%
\(ATP\)
0%
Carbohydrates
0%
Both \(ATP\) and \(NADPH_2\)
A non-green cell will not have the following activity:
0%
Requires carbohydrates
0%
Evolve \(O_2\)
0%
Evolve carbon dioxide
0%
Required water
In dark, the guard cells are:
0%
More turgid
0%
Not turgid
0%
Less turgid
0%
none of these
Chlorophyll-a present in:
0%
Algae
0%
Croton
0%
Algae and Croton
0%
Bacteria
Covering with black strips should be tested for presence of:
0%
Water in leaf
0%
\(CO_2\) in leaf
0%
\(O_2\) in leaf
0%
Starch in leaf
Leaves are destarched by keeping the plant in:
0%
2 hours in sun light
0%
10-12 hours in day
0%
Only 2 hours in night
0%
101-12 hours in night
The following light witch is more effective in opening of stomata :
0%
Green
0%
Red
0%
Blue
0%
red and blue
The process in which water is split during photosynthesis is –
0%
Hemolysis
0%
Photolysis
0%
Plasmolysis
0%
Hydrolysis
The teacher instructed a student to place a healthy potted shoe flower plant in a dark room for 24 hour prior to an experiment on photosynthesis. The purpose of placing it in a dark rook is:
0%
To destrach the leaves
0%
To increase the intake of \(CO_2\)
0%
To denature the enzymes in the leaves
0%
To activate the chloroplast in the leaves
The energy change in photosynthesis is from –
0%
Light energy to molecular energy
0%
Light energy to electrical energy
0%
Light energy to chemical energy
0%
Light energy to activation energy
In bacterial photosynthesis, the hydrogen donor is –
0%
\(H_2O\)
0%
\(H_2SO_4\)
0%
\(NH_3\)
0%
\(H_2S\)
The color of light in which rate of photosynthesis is minimum
0%
Red light
0%
Green light
0%
Yellow light
0%
Blue light
The function of leaf in a plant is:
0%
Respiration
0%
Transpiration
0%
Photosynthesis
0%
All the above
Grana are present inside:
0%
Mitochondria
0%
Ribosome
0%
Golgi bodies
0%
Chloroplast
In aquatic plant – Hydrilla stomata are:
0%
Present on stem
0%
Present on roots
0%
Absent
0%
Present on leaves
The shape of stomata in monocot plant is:
0%
Dumb-bell shape
0%
Kidney shape
0%
Heart shape
0%
Bean shape
The photosynthetic pigments (chlorophyll) absorb light by converting sun's energy into
0%
mechanical energy
0%
Kinetic energy
0%
chemical energy
0%
Potential energy
Dark reaction of photosynthesis occurs in –
0%
Grana
0%
Stroma
0%
Hemolysis
0%
Plasmolysis
The type of starch produced during photosynthesis is:
0%
Oligosaccharides
0%
Monosaccharide
0%
none of these
0%
Polysaccharides
Respiration is the process in which -
0%
energy is used up
0%
energy is released and stored in the form of ATP
0%
energy is stored in the form of ADP
0%
energy is not released at all
Carbon monoxide has greater affinity for hemoglobin as compared to oxygen by-
0%
1000 times
0%
20 times
0%
2 times
0%
200 times
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