/Plant respiration Sample Test,Sample questions

Question: Which among the following plant is widely accepted to respire in absence of oxygen ?

1.Grass

2.Yeast

3.Potato

4.Chlorella


Question: A brewery subjects about 1 tonne of purified jaggary to fermentation under ideal conditions. If it has produced 0.3 tonne of alcohol, what quantity of CO2 it has expelled to its atmosphere

1.0.1 tonne

2.0.2 tonne

3.0.3 tonne

4.0.4 tonne


Question: Alcohol is produced during which process ?

1.Aerobic respiration

2.Anerobic respiration

3.Photosynthesis

4.None


Question: Anaerobic respiration takes place in the

1.Chloroplast

2.Mitochondria

3.Cytoplasm

4.Ribosome


Question: Common immediate source of energy in cellular activity

1.NAD

2.ATP

3.DNA

4.RNA


Question: Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzymes

1.carboxylase

2.phosphatase

3.dehygrogenase

4.carboxylase and dehygrogenase


Question: Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzymes

1.Dehydrogenase

2.Carboxylase

3.Dehydrogenase and Carboxylase

4.Decarboxylase and dehydrogenase


Question: Conversion of pyruvic acid into lactic acid depends upon

1.Presence of NAD

2.Presence of enzymes

3.Absence of oxygen

4.None


Question: Dormancy is the

1.failure of a seed to germinate under favourable condition

2.failure of a seed to germinate under unfavourable condition

3.the ability of a seed to germinate under favourable condition

4.the ability of a seed to germinate under unfavourable condition


Question: During anaerobic respiration in yeast

1. Water and CO2 are end products

2.CO2, C2H5OH and energy are end products

3.Water and C2H5OH and energy are end products

4.None


Question: During respiration yeast converts glucose to

1.ethanol and water

2.ethanol and oxygen

3.ethanol and CO2

4.lactic acid and CO2


Question: End product of citric acid/ Krebs cycle is

1.citric acid

2.pyruvic acid

3.latic acid

4.carbon dioxide and water


Question: End product of fermentation are

1.O2 and C2H5OH

2.CO2 and C2H5OH

3.CO2 and O2

4.CO2 and acetyaldehyde


Question: Fermentation is

1.Anaerobic respiration

2.Incomplete oxidation of carbohydrates

3.Complete oxidation of carbohydrates

4.None


Question: Fermentation is represented by the equation

1.C6H12O6 + 6O2 → 6CO2 + 673 kcal

2.C6H12O6 → 2C2H5OH + 2CO2 + 18 kcal

3.A and B

4.None


Question: In anaerobic condition, The incomplete breakdown of sugars results in the formation of

1.Alcohol and CO2

2.Fructose and water

3.Alcohol and water

4.Alcohol and Fructose


Question: In plant cell, digestion of fats occurs with the help of

1.lysosomes

2.Peroxisomes

3.glyoxisomes

4.microtubules


Question: In succulent xerophytes the R.Q is

1.Zero

2.unity

3.less than one

4.more than one


Question: Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is known as

1.TCA pathway

2.Glycolysis

3.HMS pathway

4.Glycolysis


Question: Krebs cycle take place in

1.vesicles of ER

2.Mitochondrial matrix

3.lysosomes

4.Dictyosomes


Question: Link between glycolysis, Krebs cycle and β oxidation of fatty acid or carbohydrate and fat metabolism is

1.citric acid

2.succinic acid

3.acety CoA

4.Oxaloacetic acid


Question: Out of 36 ATP molecules produced per glucose molecule during respiration

1.2 are produced outside glycolysis and 34 during repiratory chain

2.2 are produced outside mitochondria and 34 inside the mitochondria

3.all the formed inside mitochondria

4.2 during glycolysis and 34 during Krebs cycle


Question: Photoblastic seeds are seeds

1.affected by light for germination

2.not affected by light for germination

3.independent of light for germination

4.affected by light and temperature for germination


Question: Photorespiration involves

1.Glycolate cycle

2.krebs cycle

3.calvin cycle

4.CAM cycle


Question: R. Q is ratio of

1.CO2 produced to substarate consumed

2.oxygen consumed to CO2 produced

3.CO2 produced to O2 consumed

4.Oxygen consumed to water produced


Question: R.Q. of fatty substances is generally

1.unity

2.Zero

3.more than one

4.less than one


Question: Respiration is

1.Anabolic process

2.Exothermic process

3.Endothermic process

4.Endergonic process


Question: Respiratory enzymes are located in

1.mitochondrial matrix

2.cristae

3.perimitochondrial space

4.outer membrane


Question: Some seeds enter dormancy when exposed to unfavourable condition for some time. Such dormancy is called

1.immediate dormancy

2.primary dormancy

3.secondary dormancy

4.short term dormancy


Question: Terminal cytochrome of respiratory chain which donates electrons to oxygen is

1.Cyt. b

2.Cyt.a1

3.Cyt.c

4.Cyt.a3


Question: The annual plant exchange of gases takes place mainly through

1.Leaf scars

2.lenticels

3.stomata

4.stem


Question: The end products of fermentation when sugars are used as raw material

1.Alcohol and acetic acid

2.CO2 and C2H5OH

3.Alcohol and CO2

4.None


Question: The final acceptor of electrons in the electron transport chain is

1.Water

2.Oxygen

3.Hydrogen

4.Cytochrome b


Question: The first phase in the breakdown of glucose, in animal cell, is

1.glycolysis

2.E.T.S

3.Krebs cycle

4.Glycolysis


Question: The net gain of ATP produced during the oxidation of one glucose molecule in a plant cell

1.38 ATP molecules

2.30 ATP molecules

3.36 ATP molecules

4.24 ATP molecules


Question: The process of fermentation is discovered by

1.Buchner

2.Pasteur

3.Jones

4.Krebs


Question: The process of respiration in green plants occurs

1.only when stomata are open

2.only when photosynthesis ceases

3.only when photosynthesis is in progress

4.At all times


Question: The process of weakening the seed coat to break dormancy is called

1.vernalization

2.scarification

3.photoperiodism

4.stratification


Question: The rate of glycolysis increases during anaerobic conditions is known as

1.Extinction point

2.Pasteur effect

3.Compensation point

4.Warburg effect


Question: The site of glycolysis in a cell is

1.nucleus

2.chloroplast

3.cytoplasm

4.mitochondria


Question: The ultimate respiratory substrate, yielding maximum number of ATP molecules, is

1.glycogen

2.glucose

3.amylose

4.ketogenic amino acid


Question: When a molecule of pyruvic acid is subjected to anaerobic oxidation and forms lactic acid, there is

1.Loss of 9 ATP molecules

2.Loss of 3 ATP molecules

3.Gain of 3 ATP molecules

4.Gain of 9 ATP molecules


Question: When one glucose molecule is completely oxidised, it changes

1.36 ADP molecules into 36 ATP molecules

2.38 ADP molecules into 38 ATP molecules

3.30 ADP molecules into 30 ATP molecules

4.32 ADP molecules into 32 ATP molecules


Question: Which is the pigment is involved in the germination of photoblastic seeds

1.chlorophyll

2.carotenes

3.phytochromes

4.phaeophytin


Question: Which of the following hormone is a dormancy inducer?

1.2-4D

2.GA4

3.ABA

4.GA3


Question: Which of the following is a natural germination inhibitor that induces dormancy?

1.auxin

2.cytokinin

3.ABA

4.gibberellin


Question: Which of the following is the structure in the seed coat that prevents water and O2 entry into seed thereby inducing dormancy

1.strophiolar plug

2.pericarp

3.exocarp

4.epicarp


Question: Which of the following plant exhibit dormancy due to immature embryo

1.Xanthium

2.Orchids

3.Hibiscus

4.Solanum


Question: Which of the following process may be toxic to plants

1.Photolysis of water

2.Aerobic respiration

3.Photosynthesis

4.Anaerobic respiration


Question: Which of the following statement is true regarding dormancy?

1.Dormancy may be due to seed coats impermeability to CO2

2.Dormancy helps the seed to overcome unfavourable condition

3.Dormancy helps the seed to germinate during unfavourable condition

4.Dormancy may be due to soft fragile seed coat


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