The term PHOTO in photosynthesis means __________

• Light

• Sound

• Air

• Water

Which pigment is necessary for photosynthesis?

• Safranin

• Melanin

• Methyl orange

• Chlorophyll

The given equation is the equation for ________

• Photosynthesis

• Respiration

• Circulation

• Neutralization

Give any two distinguishing points between photosynthesis and respiration.

For the process of photosynthesis, which of the following factors is not necessary?

• Water

• Carbon dioxide

• Sunlight

• Soil

__________ along with oxygen is produced during photosynthesis.

___________ traps sunlight during photosynthesis.

• Carbon

• Oxygen

• Chlorophyll

• Soil

Give the chemical equation for respiration.

To decrease the level of carbon dioxide in the atmosphere we should ______

• (a) Cut less trees

• (b) Plant more trees

• both (a) and (b)

Which gas is required for photosynthesis?

• Oxygen

• Nitrogen

• Carbon dioxide

• Sulphur dioxide