Experiments in Photosynthesis

Which of the following raw materials are important for photosynthesis to take place?

• Carbon dioxide

• Oxygen

• Hydrogen sulphide

Which of the following will trap sunlight in plants?

• water

• lignin

• chlorophyll

Who demonstrated that Plants restore to air whatever breathing animals and burning candles remove?

• Joseph Priestley

• Jan Ingenhousz

• Julius Von Sachs

Jan Ingenhousz showed that in sunlight, green parts of plants produced _________bubbles

• soap

• nitrogen

• oxygen

According to Julius Von Sachs, glucose is made in green parts of plants and is stored as ____________

• starch

• fructose

• glycogen

TW Engelmann, using prism split light into its spectral components and illuminated the cladophora algae present in a suspension pf aerobic bacteria. He observed that bacteria accumulated around _______and ________regions of spectrum.

• violet and green

• yellow and green

• blue and red

Cornelius Van Niel used ___________bacteria to conclude that oxygen in green plants comes from water and not from carbondioxide

• Purple and green sulphur bacteria

• curd bacteria

• typhoid bacteria

The organisms that undergo photosynthesis are called

• saprophytes

• parasites

• autotrophs

Chlorophyll is present in

• Mitochondria

• lysosomes

• chloroplasts

Within the chloroplasts the light energy is trapped in

• membranes

• stroma

• ribosomes