Photosynthesis and Photorespiration
Test on major metabolic pathways of plants
Questions
How does photosynthesis reduce global warming?
- Photosynthesis gives out O2.
- Photosynthetic plants absorb toxins from air.
- It decreases the concentration of CO2.
- Photosynthetic plants bring rain.
Which type of energy conversion takes place during photosynthesis?
- Solar energy to mechanical energy
- Solar energy to chemical energy
- Wind energy to chemical energy
- Chemical energy to mechanical energy
Which of the following provide(s) electrons for reduction of CO2 in light reaction of photosynthesis?
- Sunlight
- Minerals
- Water
- Soil
What is the conversion of ADP to ATP using the energy of sunlight called?
- Phosphotransfer
- Photosynthesis
- Photophosphorylation
- Oxidative phosphorylation
Which type of light is absorbed the most by plants where maximum photosynthesis takes place?
- Red light
- Green light
- Blue light
- Ultraviolet light
Which is the first stable intermediate in Calvin cycle?
- Fructose 1,6-diphosphate
- Xylulose 5-phosphate
- 3-phosphoglyceralaldehyde
- Ribose 5-phosphate
The effect of light on respiration is called
- true respiration
- transpiration
- phosphorylation
- photorespiration
Which of the following organisms have bacteriochlorophylls a, b, c, g and f?
- Purple and green sulphur bacteria
- Red alga and rhodophyta
- Brown algae
- Green algae and higher plants
_________ do not liberate oxygen on photosynthesis.
- Blue-green algae
- Photosynthetic bacteria
- Phaeophyceae
- Euglenophyceae
Which of the following statements regarding the factors which affect photosynthesis is false?
- Increase in CO2 supply increases the rate of photosynthesis markedly.
- The maximum photosynthesis occurs in red part and minimum in green part of spectrum.
- Photosynthesis increases with temperature but declines with time.
- Oxygen accumulation speeds up photosynthesis.
Where does reduction of CO2 take place?
- Stroma of chloroplast
- Grana of chloroplast
- Cytoplasm
- Stromal lamellae
In which type of plants do you find Kranz type of leaf anatomy?
- C2 plants
- C3 plants
- C4 plants
- Fleshy plants
Which pigments protect chlorophyll molecules from photo-oxidation?
- Phycobillins
- Carotenoids
- Melanins
- Betalains
Who was awarded the Nobel Prize in 1961 for tracing the path of carbon in photosynthesis and for giving C3 cycle?
- Hatch and Slack
- Arnon
- Calvin and Benson
- Hill and Bendel
Which is the first stable product of C4 cycle?
- 3-PGA
- Oxaloacetic acid
- Phospho-enol-pyruvate
- Malic acid