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401.

In photorespiration , release of `CO2` occurs inA. MitochondriaB. ChloroplastC. PeroxisomesD. All of these

Answer» Correct Answer - A
402.

Moll,s half leaf experiment was done to show ________ was required for photosynthesis.A. `H_(2)O`B. ChlorophyllC. LightD. `CO_(2)`

Answer» Correct Answer - D
403.

A wasteful light-induced respiratory process releasing `CO_(2)` is calledA. Warberg effectB. Kutusky effectC. PhotorespirationD. CAM

Answer» Correct Answer - C
404.

Name the cells that act as kitchen of green plantsA. parenchyma cellsB. mesophyll cellsC. pith cellsD. epidermins

Answer» Correct Answer - B
405.

which equation represents the process of photostnthesis most adequately ?A. `C_(6)H_(12)O_(6)+6O_(2) overset("sunlight")underset("Chlorophyll")to 6CO_(2) +6H_(2)O`B. `6CO_(2) + 6H_(2)O underset("chlorophyll")overset("Sunlight")to C_(16) H_(12)O_(6)+ 6O_(2)`C. `Co_(2)+H_(2)O underset("chlorophyll")overset("Sunlight")to CH_(2)O + O_(2)`D. `6CO_(2) + 12H_(2)O overset("sunlight")underset("Chlorophyll")to C_(6) H_(12)O_(6) + 6O_(2) +6H_(2)O`

Answer» Correct Answer - D
406.

Person who recevied Nobel Prizes for their work with green plants areA. Calvin and WastonB. Calivn and BorlangC. Beadle and TatumD. Flemming and Walksaman

Answer» Correct Answer - B
407.

The process of taking in `CO_(2)` by plants and releasing `O_(2)` is component ofA. PhotosynthesisB. EndosomosisC. TranspirationD. Respiration

Answer» Correct Answer - A
408.

In aquaria, green plants are grown forA. `Co_(2)` productionB. Starch productionC. `O_(2)` productionD. increase beauty

Answer» Correct Answer - C
409.

The essential role of air in the growth of green plants was revealed byA. PriestleyB. Van NielC. BlackmannD. Emerson

Answer» Correct Answer - A
410.

In photosynthesis, ATP is synthesized duringA. Cyclic photophosphorylationB. Non-cyclic photophosphorylationC. Both (1) and (2)D. In the photolysis of water

Answer» Correct Answer - C
411.

In plant cells, peroxisomes are associated withA. PhotsynthesisB. RespirationC. PhotorespirationD. Photophosphorylation

Answer» Correct Answer - C
412.

In plant cells, peroxisomes are associated withA. PhotorespirationB. PhotosynthesisC. PhotoperiodismD. Phototropism

Answer» Correct Answer - B
413.

Which of the following elements is essential for the photsysis of water ?A. FeB. MgC. MnD. Cu

Answer» Correct Answer - C
414.

Peroxisomes are connerned withA. RespirationB. PhotorespirationC. PhotosynthesisD. Flowering

Answer» Correct Answer - B
415.

Which of the following is maximum in chloroplast ?A. RuBP carboxylaseB. HexokinaseC. PhosphataseD. Nulcease

Answer» Correct Answer - A
416.

The synthesis of ATP in both photosynthesisA. electronB. `CO_2`C. cytochromesD. `O_2`

Answer» Correct Answer - A
417.

The reduction process of `CO_(2)` and ATP formatioin in plants has relationship. In this reaction , ATP isA. FormedB. UtilizedC. Not utlizedD. None of these

Answer» Correct Answer - B
418.

Which of the following is used during the discovery of Calvin ?A. `CO_(2)`B. WaterC. SugarD. Pyruvic acid

Answer» Correct Answer - D
419.

ATP synthesis during photosynthesis is termed asA. PhosphorylationB. Oxidative phosphorylationC. PhotophosphorylationD. Photorespiration

Answer» Correct Answer - C
420.

Which of the following is used during the discovery of Calvin ?A. SpirogyraB. VolvoxC. ChlamydomonasD. Chlorella

Answer» Correct Answer - D
421.

The primary receptor of `CO_(2)` in photosynthesis isA. Phosphoric acidB. Ribulose phosphateC. GlucoseD. Ribulose 1,5-bisphosphate

Answer» Correct Answer - D
422.

Photorespiratioin in `C_(3)` plants starts fromA. PhosphoglycerateB. GlycerateC. GlycineD. Phosphoglycolate

Answer» Correct Answer - A
423.

Photosynthesis is maximum inA. green lightB. blue followed by red lightC. red followed by blue lightD. blue light

Answer» Correct Answer - C
424.

The carbon dioxide acceptor in CAM plants isA. RuBPB. PEPC. OAAD. PGA

Answer» Correct Answer - B
425.

First product of photorespiration isA. PhosphoglycolateB. GlycolateC. GlycineD. None of the above

Answer» Correct Answer - A
First product of photorespiration is phosphoglycolate.
`RuBP+O_(2) overset("RuBP")to PGA+"Phosphoglycolate"`
426.

Assertin : Plant utilize 5-10% of the absorbed water in photosynthesis. Reason : Reduced leaf hydration decrrease the photosynthesis.A. If both the asserition and the reasion are true and the reason is a correct explanation of the assertionB. If both the assertion and reasoni s not a correct ecplanation of the assertioC. If the assertion is true but the reason is falseD. If the assertion is false but reason is true

Answer» Correct Answer - E
Less than 1% of the total water absorbed is utilized in photosynthesis. The rest is lost in transpiration. Even a slight increase in transpiration reduces the leaf hydration that cuts down photosynthesis by causing stomatal closure and hence decreased `CO_(2)` absorption, loss of leaf turgidity, reduced absorption of solar radiations and decrease enzymatic activity.
427.

If bundlesheath cells of the `C_(4)` plants are infected by an organism, which utilize `CO_(2)` efficiently then which process will be affected very firstA. `PGAL to RUBP`B. `PGAL+PGA to "Glucose" `C. `PGA to PGAL`D. `RUBP to PGA`

Answer» Correct Answer - D
Dark reaction takes place in bundle sheath (because RuBISCO present in stroma of chloroplast of bundle sheath).
428.

Primitive photosynthetic plants utilize solar energy byA. Cyclic photophosphorylationB. Z-schemeC. Both (1) and (2)D. Calvin cycle

Answer» Correct Answer - A
429.

DcmuA. Inhibits PS-IB. Inhibits PS_IIC. Destroy choroplastD. Inhibits oxidative phoosphorylation

Answer» Correct Answer - A
430.

Which one of the following is a wastefull process ?A. PhotorespirationB. RespirationC. PhotosynthesisD. ETS

Answer» Correct Answer - A
431.

DCMUA. Inhibits PS-1B. Inhibites PS-IIC. Destroys chloroplastD. Inhibits oxidative phosphorylation

Answer» Correct Answer - B
432.

Of which cell organelle is grana a part ?A. MitochondriaB. ChloroplastC. Aleurone grainD. Starch grain

Answer» Correct Answer - B
433.

`NH_(3)` released fromA. PhotorespirationB. Dark respirationC. CAMD. All of these

Answer» Correct Answer - A
434.

Photosystem I and Photosystem II are found inA. Stroma of chloroplastB. Grana of chloroplastC. Matrix of mitochondriaD. Inner membrane of mitochondria

Answer» Correct Answer - B
435.

In which of the following the rate of transpiration is highA. CAM PlantB. `C_(3)` plantsC. `C_(3) and C_(4)`D. `C_(4)` plants

Answer» Correct Answer - B
436.

Cell organelle taking part in photorespiration isA. RibosomeB. DictyosomeC. PeroxisomeD. Glyoxisome

Answer» Correct Answer - C
437.

Number of cell organelle(s) involved in photorespiration is/areA. OneB. TwoC. ThreeD. Four

Answer» Correct Answer - C
Number of cell organelles involved in photorespiration are 3 (chloroplast, peroxisome and mitochondria).
438.

Which organelle out of these does not participate in photorespiration?A. PeroxisomerB. LysosomesC. MitochondriaD. Chloroplasts

Answer» Correct Answer - B
Lysosome is not related to photorespiration.
439.

Photolysis of water results in the release ofA. electrons, protons `(H""^_(+))` and oxygenB. electrons and protons `(H""^(+))`C. protons `(H""^(+))` and oxygenD. electrons and oxygen

Answer» Correct Answer - A
440.

Photolysis of waterA. Only IIB. I and IIC. II and IVD. Only IV

Answer» Correct Answer - B
441.

In photosynthesis ,`P_(680)` refers toA. Reaction center of photosystem lB. Antennae molecules complexC. Reaction center of photosystem llD. Complete light harvesting complexes

Answer» Correct Answer - C
in photosynthesis, P680 refers to reaction center of photosystem II.
442.

Consider the following statement: A.The layer of bundle sheath cells in the leaves of `C_(4)` plants lacks intercellular spaces- B. The bundle sheath cells in the leaves of `C_(4)` plants lack mitochondria and peroxisomes.- C. The bundle sheath cells of `C_(4)` plants have large number of chloroplasts and thick walls.-Neither `C_(4)` plants nor CAM plants have grana in their chloroplasts and thick walls. - Which of the statements given above is/are correct?A. A and B onlyB. B and C onlyC. A and C onlyD. None

Answer» Correct Answer - C
443.

In `C_(4)` plants, the bundle sheath cellsA. Having thin walls of facillate the gaseous exchangeB. Have large intercellular spacesC. Are rich in PEP carboxylaseD. Having a high of chloroplasts and rich in RuBisCo

Answer» Correct Answer - B
444.

In `C_(4)` plants, the bundle sheath cellsA. have thin walls to facilitate gaseous exchangeB. have large intercellular spacesC. are rich in PEP carboxylaseD. have a high density of chloroplants

Answer» Correct Answer - D
445.

Bundle sheath cells around the vascular bundles in C4 plant are characterized byA. Few chloroplasts, thick cell walls and no intercellular spacesB. Large number of chloroplasts, thin cell walls and no intercellular spacesC. Large number of chloroplasts, thick cell walls and no intercellular spacesD. Few chloroplasts, thick cell walls and intercellular spaces

Answer» Correct Answer - C
Bundle sheath cells around the vascular bundles in C4 plant are characterized by large number of chloroplasts, thick cell walls and no intercellular spaces.
446.

Light reaction of photosynthesis occurs insideA. stromaB. granaC. endoplasmic reticulumD. cytoplasm

Answer» Correct Answer - B
447.

For which substrate `RuBisCO` shows greater affinity?

Answer» Correct Answer - `CO_(2)`
448.

A process that makes important difference between `C_(3)` and `C_(4)` plants isA. transpirationB. glycolysisC. photosythesisD. photorespiration

Answer» Correct Answer - D
Photorespiration is a light dependent process which occurs In `C_(3)`-plants. It is opposite to photosynthesis because during this process, uptake of `O_(2)` and release of `CO_(2)` take place. Due to the presence of kranz anatomy, `C_(4)`-plants do not show photorespiration.
449.

Photorespiration is calledA. `C_(2)` cycleB. `C_(3)` cycleC. `C_(4)` cycleD. None of these

Answer» Correct Answer - A
PCO or photorespiration is also called `C_(2)` cycle as there is synthesis of 2-carbon compound.
450.

The two pigment system theory of photosynthesis was proposed byA. HillB. BlackmanC. EmersonD. Arnon

Answer» Correct Answer - C
The two pigment system theory of photosynthesis