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XI_ Botany_ New_ Chap_ 11 _Photosynthesis_ in_ Higher_ Plants _ 310 Statement
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XI_ Botany_ New_ Chap_ 11 _Photosynthesis_ in_ Higher_ Plants _ 310 Statement
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XI_Botany_ New Chap-11 PHOTOSYNTHESIS IN HIGHER PLANTS (Statement Pairs)INTRO; EARLY EXPERIMENTS; PHOTOSYNTHESIS; PIGMENTS INVOLVED; LIGHT REACTION
S# False Statement True Statement
Plants absorb sunlight through their roots, a Plants primarily absorb sunlight through their leaves to
1
process essential for photosynthesis. facilitate photosynthesis.
Photosynthesis is a process exclusive to green Photosynthesis is a vital process that sustains life by
plants and does not contribute to the broader forming the basis of the food chain and releasing oxygen
2
ecosystem. Oxygen is a byproduct of into the atmosphere.
photosynthesis.
Melvin Calvin's Nobel Prize-winning research Melvin Calvin's research elucidated the role of light
3 disproved the role of light energy in energy in photosynthesis, leading to a Nobel Prize.
photosynthesis.
Plants use carbon dioxide, oxygen, and Plants use carbon dioxide, water, and light energy to
4 minerals to produce energy through produce glucose during photosynthesis.
photosynthesis.
Photosynthesis is solely responsible for Photosynthesis involves producing glucose and oxygen,
5
producing glucose in plants. vital for plant and animal life.
Photosynthesis occurs only during daylight Photosynthesis primarily occurs during the day, but
6
hours and ceases at night. some processes continue at a lower rate at night.
Heterotrophs can undergo photosynthesis to Heterotrophs cannot undergo photosynthesis and
7
produce their own food. depend on other organisms for food.
Photosynthesis is primarily an aerobic process, Photosynthesis is an anaerobic process and does not
8
requiring oxygen for its completion. require oxygen for its completion.
All plants perform photosynthesis at the same Photosynthesis rates vary among plant species due to
9 rate, regardless of their species or differences in genetics, environment, and adaptation.
environment.
The process of photosynthesis primarily Photosynthesis involves producing glucose, storing
10 involves breaking down glucose to produce energy in the form of carbohydrates.
energy.
Photosynthesis only occurs in land plants and Photosynthesis occurs in both land and aquatic plants,
11
is absent in aquatic plants and algae. as well as algae.
Photosynthesis produces only glucose, a Photosynthesis produces glucose and various other
12 simple sugar, and no other organic organic compounds essential for plant growth.
compounds.
The process of photosynthesis is primarily Photosynthesis is primarily aimed at converting light
13
aimed at releasing stored energy in plants. energy into chemical energy stored in glucose.
Photosynthesis in plants is solely regulated by Photosynthesis is regulated by both external
14 external environmental factors and not by environmental factors and internal mechanisms in
internal mechanisms. plants.
Plants utilize only a fraction of the absorbed Plants efficiently utilize absorbed sunlight for
15 sunlight for photosynthesis, wasting the rest. photosynthesis, converting it into chemical energy.
Photosynthesis is a purely physical process Photosynthesis involves complex chemical reactions
16 and does not involve any chemical reactions. within plant cells.
Photosynthesis only occurs in the leaves of Photosynthesis primarily occurs in leaves but also takes
17
plants and not in other plant organs. place in other green plant organs.
Plants engage in photosynthesis primarily to Photosynthesis in plants is primarily for the synthesis of
18
regulate their internal temperature. organic compounds and energy storage.
Photosynthesis is an energy-consuming Photosynthesis is an energy-producing process that
19 process, requiring more energy input than it converts light energy into chemical energy.
produces.
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, XI_Botany_ New Chap-11 PHOTOSYNTHESIS IN HIGHER PLANTS (Statement Pairs)
INTRO; EARLY EXPERIMENTS; PHOTOSYNTHESIS; PIGMENTS INVOLVED; LIGHT REACTION
S# False Statement True Statement
Photosynthesis only occurs during warm Photosynthesis occurs year-round, with varying rates
20
weather, ceasing in colder seasons. influenced by temperature.
Photosynthesis involves breaking down water Photosynthesis utilizes water as a source of electrons
21 into hydrogen and oxygen to produce energy. and oxygen, not for energy production.
Photosynthesis is solely aimed at producing Photosynthesis produces oxygen as a byproduct while
22 oxygen to replenish the atmosphere. primarily aimed at synthesizing glucose for plant growth
During photosynthesis, plants absorb nitrogen Photosynthesis predominantly occurs in the green parts
23
from the air. of plants, where chlorophyll is present.
Photosynthesis can occur in complete Photosynthesis requires light as an essential factor, and
24
darkness. it cannot occur in complete darkness.
Photosynthesis converts glucose and oxygen Photosynthesis is a physico-chemical process that
25 into carbon dioxide and water. involves complex chemical reactions within plant cells.
Water is not required for the process of Photosynthesis involves the conversion of carbon
26 photosynthesis. dioxide (CO2) and water into glucose and oxygen in the
presence of light.
Photosynthesis is primarily a mechanical Photosynthesis is the process through which plants use
27 process. light energy to produce glucose from carbon dioxide and
water.
Photosynthesis is a destructive process that Photosynthesis is a constructive process that builds
28 breaks down organic compounds into simpler organic compounds using light energy.
substances using light energy.
Chlorophyll is not involved in the process of Chlorophyll, essential for photosynthesis, is primarily
29 photosynthesis. located in the chloroplasts of plant cells, especially in
the leaves.
Plants utilize nitrogen gas directly from the Plants primarily use carbon dioxide (CO2) from the
30 atmosphere to produce glucose through atmosphere to synthesize glucose during
photosynthesis. photosynthesis.
Photosynthesis occurs even in the absence of Chlorophyll is crucial for photosynthesis as it captures
31 chlorophyll in plant cells, and it's solely light energy, and photosynthesis requires both
dependent on the presence of sunlight. chlorophyll and light for glucose production.
Photosynthesis is most efficient in the absence Water is a critical component of photosynthesis,
32 of water since excess water can inhibit the enabling plants to produce glucose by splitting water
photosynthetic process. molecules during the light-dependent reactions.
During photosynthesis, plants consume Photosynthesis involves the production of glucose and
glucose to generate oxygen, and this process oxygen from carbon dioxide and water, with oxygen
33
supports the life of aerobic organisms. being released as a byproduct.
Photosynthesis takes place exclusively in the Photosynthesis primarily occurs in the leaves of plants,
roots of plants, where specialized cells are where chlorophyll is abundant, and it involves the
34
responsible for glucose synthesis using conversion of light energy into glucose.
nutrients absorbed from the soil.
Sunlight is not essential for photosynthesis, Sunlight is a critical factor for photosynthesis, and while
and plants can carry out the process using artificial light sources can support photosynthesis,
35
artificial light sources, such as LEDs, with natural sunlight is the most effective source.
similar efficiency.
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, XI_Botany_ New Chap-11 PHOTOSYNTHESIS IN HIGHER PLANTS (Statement Pairs)
INTRO; EARLY EXPERIMENTS; PHOTOSYNTHESIS; PIGMENTS INVOLVED; LIGHT REACTION
S# False Statement True Statement
Plants undergo photosynthesis primarily to Photosynthesis is the primary process through which
regulate their water uptake and maintain plants produce glucose (energy) and oxygen, vital for
36
cellular osmotic balance. their growth, survival, and supporting other organisms.
Photosynthesis involves breaking down Photosynthesis is a process where plants create glucose,
glucose to release energy for plant growth and storing energy, and cellular respiration involves
37
metabolic activities, and this process is similar breaking down glucose to release energy for cellular
to cellular respiration. use.
Plants predominantly absorb carbon dioxide Plants primarily absorb carbon dioxide (CO2) through
38 (CO2) through their roots and transport it to tiny pores called stomata on their leaves, where
the leaves for photosynthesis to occur. photosynthesis takes place.
Photosynthesis in plants generates more Photosynthesis primarily occurs during the day when
energy in the form of glucose during nighttime plants have access to sunlight, allowing them to produce
39
due to lower temperatures and reduced water glucose through the process of photosynthesis.
loss.
In Joseph Priestley's experiment, he Joseph Priestley discovered oxygen in 1774.
40
discovered oxygen in 1770.
Jan Ingenhousz showed that sunlight is not Jan Ingenhousz demonstrated that sunlight is essential
essential for the plant's process that purifies for the plant's process of purifying the air.
41
the air fouled by burning candles or breathing
animals.
T.W Engelmann's experiment showed that T.W Engelmann's experiment showed that bacteria
42 bacteria accumulated mainly in the region of accumulated mainly in the region of blue and red light.
green light.
Cornelius van Niel demonstrated that Cornelius van Niel demonstrated that photosynthesis is
43 photosynthesis is primarily a dark-dependent essentially a light-dependent reaction.
reaction.
In the leaf experiment, KOH-soaked cotton is In the leaf experiment, KOH-soaked cotton is used to
44 used to release CO2 and enhance absorb CO2 and inhibit photosynthesis in one part of the
photosynthesis. leaf.
Julius von Sachs found that glucose is not Julius von Sachs found that glucose is usually stored as
45
stored as starch in plants. starch in plants.
The equation representing the total process of The equation representing the total process of
46 photosynthesis includes only CO2 and H2O as photosynthesis includes CO2, H2O, and light as essential
reactants. components.
The O2 evolved by green plants primarily The O2 evolved by green plants primarily comes from
47
comes from carbon dioxide. water.
Photosynthesis can be adequately described Photosynthesis involves a multistep process with
48
by a single-step reaction equation. several intermediate reactions.
In photosynthesis, the majority of starch is Starch is primarily produced in the stroma of
49
produced in the grana of chloroplasts. chloroplasts during photosynthesis.
The light reactions in photosynthesis occur Light reactions in photosynthesis are directly dependent
50
independently of ATP and NADPH. on ATP and NADPH.
The grana in chloroplasts are responsible for Grana in chloroplasts are primarily involved in the light
51
sugar synthesis during photosynthesis. reactions of photosynthesis.
Photosynthesis occurs only in the mesophyll Photosynthesis occurs in various green parts of plants,
52
cells of plant leaves. not only in mesophyll cells.
The stroma lamellae in chloroplasts play a Stroma lamellae provide structural support but do not
53
crucial role in trapping light energy. directly trap light energy in chloroplasts.
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