Photosynthesis in Higher Plants- Quiz 1

Photosynthesis is –

• A physical process

• A chemical process

• A physio-chemical process

• An energy wasting process

Photosynthesis is important because –

• It is an important source of all foods on earth

• It is responsible for the release of O₂

• It is responsible for the release of O₂ in the environment in night

• a and b

Moll’s half leaf experiment proves that –

• Light is essential for photosynthesis

• CO₂ is essential for photosynthesis

• O₂ releases during photosynthesis

• Chlorophyll is essential for photosynthesis

Who proved that vegetation purifies the air impured by burning of candle –

• Von Mayr

• De Saussure

• Sachs

• Joseph Priestley

Who discovered the role of light and green parts of the plants in purifying the noxious air –

• Von Mayr

• De saussure

• Sachs

• Jan Ingenhousz

Who found that in green parts of plant glucose is made and glucose is stored as starch –

• Sachs

• Arnon

• Arnold

• Englemann

Who used prism, white light, green alga, Cladophora and aerobic bacteria and plotted the action spectra for photosynthesis

• Sachs

• Arnon

• Arnold

• Englemann

Who proved that O2 comes from water, not from CO2 in photosynthesis? It was based on the experiment of photosynthesis in purple and green bacteria.

• Van Neil

• Englemann

• Arnold

• Arnon

The expression “We are creatures of chloroplasts” means that –

• All life possesses chloroplast

• All life depends ultimately on photosynthesis

• Chloroplasts are models of all cell organelles

• a and c

The main photosynthetic pigments in plants are –

• Chl a and Chl c

• Chl a and Chl b

• Chl x and Chl y

• Retinal pigments and accessory pigments