Exam (elaborations)
XI Botany New Chapter-12 RESPIRATION IN PLANTS (Assertion and Reason Statement Pairs)
XI Botany New Chapter-12 RESPIRATION IN PLANTS (Assertion and Reason Statement Pairs)
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XI_Botany_ New Chap-12 RESPIRATION IN PLANTS (Assertion and Reason Statement Pairs)RESPIRATION IN PLANTS _ A&R TEST ITEMS
# Incorrect Assertion Incorrect Reason Correct Assertion Correct Reason
INTRODUCTION
Photosynthesis relies on absorbing Vibrations from sound waves cause Photosynthesis is the process of Green plants and cyanobacteria trap light
1 sound waves to create chemical the release of energy in glucose, converting light energy into chemical energy and transform it into glucose,
energy stored in carbohydrates. sucrose, and starch. energy stored in carbohydrates. sucrose, and starch.
Cellular respiration primarily involves The breakdown of inorganic materials Cellular respiration breaks down complex The energy released during respiration is
breaking down inorganic compounds leads to the synthesis of ATP, the food molecules in cells to release energy used to synthesize ATP, serving as the
2
to release energy for ATP production. primary energy currency in cells. for ATP synthesis. cell's energy currency.
ATP is only used for energy storage ATP remains dormant in cells and ATP is utilized for various energy-requiring ATP acts as the energy currency, ensuring
3 and does not participate in any does not play a role in energy- processes in organisms. energy is available when needed for
cellular processes. requiring processes. cellular functions.
The carbon skeleton produced during Carbon skeletons are expelled from The carbon skeleton produced during Carbon skeletons are used as building
4 respiration is a waste product and has the cell as waste and do not respiration serves as a precursor for blocks for the creation of various
no role in biosynthesis. contribute to biosynthesis. biosynthesis in the cell. molecules within the cell.
12.1 DO PLANTS BREATHE?
Plant cells have specialized organs for Specialized organs allow plants to Plant cells have no specialized organs forEach plant part handles its gas-exchange
5 gaseous exchange. respire efficiently. gaseous exchange. needs, with minimal gas transport
between parts.
Plants require significant amounts of The high oxygen demand in plants is Plants do not have significant demands for The respiration rates of plant roots, stems,
6 oxygen for respiration. due to their rapid respiration rate. gas exchange. and leaves are much lower than those of
animals.
The carbon skeleton produced during The carbon skeleton is a byproduct of The carbon skeleton produced during Energy released during respiration is not
respiration is a waste product. respiration and serves no purpose in respiration is used as a precursor for used directly but is used to synthesize
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the cell. biosynthesis in the cell. ATP. The carbon skeleton is essential for
biosynthesis.
Glucose is entirely converted into The complete combustion of glucose The complete combustion of glucose The key is to oxidize glucose in several
8 useful energy during respiration. results in the maximum release of yields energy, most of which is given out small steps enabling energy to be coupled
energy. as heat. to ATP synthesis.
Respiration can occur without the Oxygen is not necessary for the During the process of respiration, oxygen The combustion reaction in respiration
9 presence of oxygen. breakdown of glucose in plant cells. is utilized, and carbon dioxide, water, and requires oxygen.
energy are released as products.
ATP is used directly for all energy- ATP acts as the primary source of Plant cells utilize ATP as the energy ATP is used for various energy-requiring
10
requiring processes in cells. energy for cellular processes. currency. processes in organisms.
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, XI_Botany_ New Chap-12 RESPIRATION IN PLANTS (Assertion and Reason Statement Pairs)
RESPIRATION IN PLANTS _ A&R TEST ITEMS
# Incorrect Assertion Incorrect Reason Correct Assertion Correct Reason
Dead cells in plants play a crucial role Dead cells release oxygen necessary The cells in the interior of stems are dead Only 'living' cells in stems, leaves, and
11 in gaseous exchange. for plant respiration. and provide only mechanical support. roots participate in gas exchange.
12.2 GLYCOLYSIS
Glycolysis mainly occurs in the nucleus The nucleus provides the necessary Glycolysis occurs in the cytoplasm of the Glycolysis happens in the cytoplasm.
12 of the cell. environment for the breakdown of cell.
glucose into pyruvic acid.
The combustion of glucose results in During glucose combustion, nitrogen Complete combustion of glucose produces Combustion of glucose produces CO2 and
13 the production of nitrogen gas. gas is released along with carbon CO2 and H2O, yielding most of the energy H2O, releasing heat.
dioxide and water as end products. as heat.
Glycolysis is the last step of glucose Glycolysis is the final and most Glycolysis is the first phase of glucose Glycolysis is an initial step in glucose
14 metabolism. essential phase in the breakdown of metabolism. metabolism.
glucose in living organisms.
Glycolysis generates four molecules of The glycolytic pathway converts Glycolysis yields two molecules of pyruvic Glycolysis produces two pyruvic acid
pyruvic acid. glucose into four molecules of pyruvic acid. molecules.
15
acid, making it a highly efficient
process.
ATP is not involved in any step during Glycolysis is an energy-independent ATP is consumed and produced during ATP is both consumed and generated
16 glycolysis. process, and ATP plays no role in various steps of glycolysis. during glycolysis.
driving the reactions.
The conversion of glucose into glucose ATP is irrelevant in the initial The phosphorylation of glucose into ATP is needed to convert glucose to
17 6-phosphate does not require any phosphorylation of glucose to glucose glucose 6-phosphate consumes ATP. glucose 6-phosphate.
ATP. 6-phosphate in glycolysis.
Fructose 6-phosphate is directly The glycolytic pathway initiates with Fructose 6-phosphate is typically Normally, fructose 6-phosphate derives
18 formed from fructose. fructose being converted into fructose generated from glucose during glycolysis. from glucose in glycolysis.
6-phosphate.
No redox reactions take place in There are no instances of redox Several redox reactions occur during Glycolysis involves multiple redox
glycolysis. reactions within the glycolytic glycolysis. reactions.
19
process, making it a straightforward
pathway.
The key product of glycolysis is acetic The primary outcome of glycolysis is The principal product of glycolysis is The central product of glycolysis is pyruvic
20 acid. the formation of acetic acid, which pyruvic acid. acid.
serves as the central product.
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