The most important enzyme involved in photosynthetic CO2 fixation in C3 plants

The most important enzyme involved in photosynthetic CO2 fixation in C3 plants
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The most important enzyme involved in photosynthetic CO2 fixation in C4 plants

Description : The most important enzyme involved in photosynthetic CO2 fixation in C4 plants

Last Answer : Ans. PEP carboxylase

The photosynthetic rate of C4 is …….. than C3 plants

Description : The photosynthetic rate of C4 is …….. than C3 plants

Last Answer : Ans. Low

Plants adapted to low light intensity have (a) larger photosynthetic unit size than the sun plants (b) higher rate of CO2 fixation than the sun plants (c) more extended root system (d) leaves modified to spines.

Description : Plants adapted to low light intensity have (a) larger photosynthetic unit size than the sun plants (b) higher rate of CO2 fixation than the sun plants (c) more extended root system (d) leaves modified to spines.

Last Answer : (a) larger photosynthetic unit size than the sun plants

With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct? (a) Increasing atmospheric CO2 concentration up to 0.05% can enhance CO2 fixation rate.(b) C3 plants respond to higher temperature with enhanced photosynthesis while C4 plants have much lower temperature optimum. (c) Tomato is a greenhouse crop which can be grown in CO2-enriched atmosphere for higher yield. (d) Light saturation for CO2 fixation occurs at 10% of full sunlight.

Description : With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct? (a) Increasing atmospheric CO2 concentration up to 0.05% can enhance CO2 fixation rate. ( ... for higher yield. (d) Light saturation for CO2 fixation occurs at 10% of full sunlight.

Last Answer : (b) C3 plants respond to higher temperature with enhanced photosynthesis while C4 plants have much lower temperature optimum

The primary acceptor, during CO2 fixation in C3 plants, is (a) phosphoenolpyruvate (PEP) (b) ribulose 1, 5-diphosphate (RuDP) (c) phosphoglyceric acid (PGA) (d) ribulose monophosphate (RMP).

Description : The primary acceptor, during CO2 fixation in C3 plants, is (a) phosphoenolpyruvate (PEP) (b) ribulose 1, 5-diphosphate (RuDP) (c) phosphoglyceric acid (PGA) (d) ribulose monophosphate (RMP).

Last Answer : (b) ribulose 1, 5-diphosphate (RuDP)

The enzyme involved in biological nitrogen fixation

Description : The enzyme involved in biological nitrogen fixation

Last Answer : Ans. Nitrogenase

Select the correct statement: (1) C4 pathway for. CO2 fixation were discovered by Hatch and Slack (2) CO2 is essential for photosynthesis (3) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria (4) Phloem is the principal pathway for translocation of solutes

Description : Select the correct statement: (1) C4 pathway for. CO2 fixation were discovered by Hatch and Slack (2) CO2 is essential for photosynthesis (3) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria (4) Phloem is the principal pathway for translocation of solutes

Last Answer : Ans. ((c))

What are the differences between C3 and C4 photosynthetic pathways? -Biology

Description : What are the differences between C3 and C4 photosynthetic pathways? -Biology

Last Answer : answer:

Enzyme involved in carboxylation in C3 cycle is -Biology

Description : Enzyme involved in carboxylation in C3 cycle is -Biology

Last Answer : answer:

C4 plants normally give more biological yield than C3 plants because of

Description : C4 plants normally give more biological yield than C3 plants because of

Last Answer : Ans. Less respiration

The water use efficiency of C4 is …….. than C3 plants

Description : The water use efficiency of C4 is …….. than C3 plants

Last Answer : Ans. High

C3 plants are

Description : C3 plants are

Last Answer : Ans. Rice, Wheat, Pea, Soybean etc

Which of the following is correct about the photorespiration? a. Photorespiration is more efficient in synthesizing glucose than photosynthesis. b. C3 plants are best adapted to handle c. Photorespiration is likely to occur when oxygen level is high and CO2 level is d. During photorespiration plants use oxygen to break down carbohydrates and release e. All of these

Description : Which of the following is correct about the photorespiration? a. Photorespiration is more efficient in synthesizing glucose than photosynthesis. b. C3 plants are best adapted to handle c. ... During photorespiration plants use oxygen to break down carbohydrates and release e. All of these

Last Answer : c. Photorespiration is likely to occur when oxygen level is high and CO2 level is

The C4 plants are photosynthetically more efficient than C3 plants because (a) the CO2 efflux is not prevented (b) they have more chloroplasts (c) the CO2 compensation point is more (d) CO2 generated during photorespiration is trapped and recycled through PEP carboxylase.

Description : The C4 plants are photosynthetically more efficient than C3 plants because (a) the CO2 efflux is not prevented (b) they have more chloroplasts (c) the CO2 compensation point is more (d) CO2 generated during photorespiration is trapped and recycled through PEP carboxylase.

Last Answer : (b) they have more chloroplasts

Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in (a) C4 plants (b) C2 plants (c) C3 and C4 plants (d) C3 plants.

Description : Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in (a) C4 plants (b) C2 plants (c) C3 and C4 plants (d) C3 plants.

Last Answer : (a) C4 plants

In C4 plants, CO2 fixation is done by (a) sclerenchyma (b) chlorenchyma and hypodermis (c) mesophyll cells (d) guard cells.

Description : In C4 plants, CO2 fixation is done by (a) sclerenchyma (b) chlorenchyma and hypodermis (c) mesophyll cells (d) guard cells.

Last Answer : (c) mesophyll cells

Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (a) effective pumping of CO2 into bundle sheath cells (b) RuBisCO in C4 plants has higher affinity for CO2 (c) four carbon acids are the primary initial CO2 fixation products (d) the primary fixation of CO2 is mediated via PEP carboxylase. (2005) 65. In sugarcane plant

Description : Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (a) effective pumping of CO2 into bundle sheath cells (b) RuBisCO in C4 plants has higher affinity for CO2 (c ... d) the primary fixation of CO2 is mediated via PEP carboxylase. (2005) 65. In sugarcane plant

Last Answer : (d) the primary fixation of CO2 is mediated via PEP carboxylase.

In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of (a) bundle sheath (b) phloem (c) epidermis (d) mesophyll.

Description : In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of (a) bundle sheath (b) phloem (c) epidermis (d) mesophyll.

Last Answer : (d) mesophyll.

In leaves of C4 plants, malic acid synthesis during CO2 fixation occurs in (a) bundle sheath (b) guard cells (c) epidermal cells (d) mesophyll cells

Description : In leaves of C4 plants, malic acid synthesis during CO2 fixation occurs in (a) bundle sheath (b) guard cells (c) epidermal cells (d) mesophyll cells

Last Answer : (d) mesophyll cells.

Final product of C3 pathway is

Description : Final product of C3 pathway is

Last Answer : Ans. 3 PGA

C3 cycle is also known as

Description : C3 cycle is also known as

Last Answer : Ans. Blackman reaction

C3 /Dark reaction/Calvin cycle take place in

Description : C3 /Dark reaction/Calvin cycle take place in

Last Answer : Ans. Stroma of Chlorophyll

Which of the following processes doesn't account for an increase in atmospheric CO2 (carbon dioxide) levels? w) deforestation x) photosynthetic processes y) plant respiration z) fossil fuel combustion

Description : Which of the following processes doesn't account for an increase in atmospheric CO2 (carbon dioxide) levels? w) deforestation x) photosynthetic processes y) plant respiration z) fossil fuel combustion

Last Answer : ANSWER: X -- PHOTOSYNTHETIC PROCESSES

The enzyme that catalyses carbon dioxide fixation in C4 plants is (a) RuBP carboxylase (b) PEP carboxylase (c) carbonic anhydrase (d) carboxydismutase.

Description : The enzyme that catalyses carbon dioxide fixation in C4 plants is (a) RuBP carboxylase (b) PEP carboxylase (c) carbonic anhydrase (d) carboxydismutase.

Last Answer : (b) PEP carboxylase

Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation? (a) Leghaemoglobin scavenges oxygen and is pinkish in colour. (b) Nodules act as sites for nitrogen fixation. (c) The enzyme nitrogenase catalyses the conversion of atmospheric N2 to NH3. (d) Nitrogenase is insensitive to oxygen.

Description : Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation ... the conversion of atmospheric N2 to NH3. (d) Nitrogenase is insensitive to oxygen.

Last Answer : (d) Nitrogenase is insensitive to oxygen.

Phosphorus fixation is most probable in

Description : Phosphorus fixation is most probable in

Last Answer : Ans. Laterite Soil

Which is CO2 acceptor in C3 plant? -Biology

Description : Which is CO2 acceptor in C3 plant? -Biology

Last Answer : answer:

Pentose phosphate that fixes CO2 in a C3 plant. -Biology

Description : Pentose phosphate that fixes CO2 in a C3 plant. -Biology

Last Answer : answer:

Name the primary acceptor of CO2 in C3 cycle. -Biology

Description : Name the primary acceptor of CO2 in C3 cycle. -Biology

Last Answer : answer:

First product formed when CO2 is fixed during dark reaction in C3 cycle. -Biology

Description : First product formed when CO2 is fixed during dark reaction in C3 cycle. -Biology

Last Answer : answer:

Which compound act as co2 accepter in c3 and c4 plant -Biology

Description : Which compound act as co2 accepter in c3 and c4 plant -Biology

Last Answer : answer:

Which compound act as co2 accepter in c3 and c4 plant -Biology

Description : Which compound act as co2 accepter in c3 and c4 plant -Biology

Last Answer : answer:

The CO2 fixation during C4 pathway occurs in the chloroplast of (a) guard cells (b) bundle sheath cells (c) mesophyll cells (d) spongy parenchyma.

Description : The CO2 fixation during C4 pathway occurs in the chloroplast of (a) guard cells (b) bundle sheath cells (c) mesophyll cells (d) spongy parenchyma.

Last Answer : (c) mesophyll cells

Study the pathway given below. Atmospheric CO2 mesophyll cell Bundle sheath cell Plasma- desmata Plasma membrane Cell wall HCO Phosphoenol- 3 – pyruvate Cell wall C acid 4 C acid 3 Transport Transport Fixation by Calvin cycle C acid 4 C acid 3 CO2 In which of the following options correct words for all the three blanks A, B and C are indicated? A B C (a) Decarboxylation Reduction Regeneration (b) Fixation Transamination Regeneration (c) Fixation Decarboxylation Regeneration (d) Carboxylation Decarboxylation Reduction

Description : Study the pathway given below. Atmospheric CO2 mesophyll cell Bundle sheath cell Plasma- desmata Plasma membrane Cell wall HCO Phosphoenol- 3 - pyruvate Cell wall C acid ... b) Fixation Transamination Regeneration (c) Fixation Decarboxylation Regeneration (d) Carboxylation Decarboxylation Reduction

Last Answer : (c) Fixation Decarboxylation Regeneration

PGA as the first CO2 fixation product was discovered in photosynthesis of (a) bryophyte (b) gymnosperm (c) angiosperm (d) alga.

Description : PGA as the first CO2 fixation product was discovered in photosynthesis of (a) bryophyte (b) gymnosperm (c) angiosperm (d) alga.

Last Answer : (d) alga.

The pigment involved in photosynthetic activity is - (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll

Description : The pigment involved in photosynthetic activity is - (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll

Last Answer : (4) chlorophyll Explanation: Chlorophyll is an extremely important bio-molecule, critical in photosynthesis, which allows plants to absorb energy from light. Chlorophyll absorbs light most strongly in ... near-green portions of the spectrum, hence the green color of chlorophyll-containing tissues.

The pigment involved in photosynthetic activity is (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll

Description : The pigment involved in photosynthetic activity is (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll

Last Answer : chlorophyll

In the complement system; a. alternative pathway does not rely on antibody b. C1 is the first enzyme complex in the classical pathway c. both the alternative and classical pathway converge at C3 d. all above

Description : In the complement system; a. alternative pathway does not rely on antibody b. C1 is the first enzyme complex in the classical pathway c. both the alternative and classical pathway converge at C3 d. all above

Last Answer : all above

A process that makes important difference between C3 and C4 plants is (a) transpiration (b) glycolysis (c) photosynthesis (d) photorespiration.

Description : A process that makes important difference between C3 and C4 plants is (a) transpiration (b) glycolysis (c) photosynthesis (d) photorespiration.

Last Answer : (d) photorespiration.

A process that makes important difference between C3 and C4 plants is (1) Photorespiration (2) Transpiration (3) Glycolysis (4) Photosynthesis

Description : A process that makes important difference between C3 and C4 plants is (1) Photorespiration (2) Transpiration (3) Glycolysis (4) Photosynthesis

Last Answer : (1) Photorespiration

Which enzyme is responsible for atmospheric nitrogen fixation? -Biology

Description : Which enzyme is responsible for atmospheric nitrogen fixation? -Biology

Last Answer : answer:

Enzyme first used for nitrogen fixation (a) nitrogenase (b) nitroreductase (c) transferase (d) transaminase.

Description : Enzyme first used for nitrogen fixation (a) nitrogenase (b) nitroreductase (c) transferase (d) transaminase.

Last Answer : (a) nitrogenase

If by radiation all nitrogenase enzyme are inactivated, then there will be no (a) fixation of nitrogen in legumes (b) fixation of atmospheric nitrogen (c) conversion from nitrate to nitrite in legumes (d) conversion from ammonium to nitrate in soil.

Description : If by radiation all nitrogenase enzyme are inactivated, then there will be no (a) fixation of nitrogen in legumes (b) fixation of atmospheric nitrogen (c) conversion from nitrate to nitrite in legumes (d) conversion from ammonium to nitrate in soil.

Last Answer : (a) fixation of nitrogen in legumes

What The process of nitrogen fixation involved?

Description : What The process of nitrogen fixation involved?

Last Answer : Changing it from a gas (N2) into a compound (often with O2

The crops which are involved in nitrogen fixation are A- alfalfa and cloverB- soybean C- bean and lupine D- all of these

Description : The crops which are involved in nitrogen fixation are A- alfalfa and clover B- soybean C- bean and lupine D- all of these

Last Answer : all of these

Which is the first CO2 acceptor enzyme in C4 plants? (a) RuDP carboxylase (b) Phosphoric acid (c) RuBisCO (d) PEP- carboxylase

Description : Which is the first CO2 acceptor enzyme in C4 plants? (a) RuDP carboxylase (b) Phosphoric acid (c) RuBisCO (d) PEP- carboxylase

Last Answer : (d) PEP- carboxylase

Percentage concentration of CO2 in air and soil is

Description : Percentage concentration of CO2 in air and soil is

Last Answer : Ans. 0.030%and 0.25%

Photosynthetic apparatus in plants. -Biology

Description : Photosynthetic apparatus in plants. -Biology

Last Answer : answer:

The deficiencies of micronutrients not only affects growth of plants, but also vital functions such as photosynthetic and mitochondrial electron flow.

Description : The deficiencies of micronutrients not only affects growth of plants, but also vital functions such as photosynthetic and mitochondrial electron flow.

Last Answer : The deficiencies of micronutrients not only affects growth of plants, but also vital functions such as photosynthetic and ... Mn, Co, Ca D. Ca, K, Na

Primitive photosynthetic plants utilize solar energy by

Description : Primitive photosynthetic plants utilize solar energy by

Last Answer : Primitive photosynthetic plants utilize solar energy by A. Cyclic photophosphorylation B. Z-scheme C. Both (1) and (2) D. Calvin cycle