CAX IGCSE Biol KS4 the leaf structure

Which organelle performs PHOTOSYNTHESIS?

• Chloroplast

• Mitochondria

• Ribosomes

• Cell wall

Which of the following is the correct equation for PHOTOSYNTHESIS?

• CO₂ + light + H₂O --> O₂ + Sugar
• CO₂ + sugar + H₂O --> O₂ + light
• _O2 + light + H₂O --> CO₂ + Sugar
• CO₂ + O₂ + H₂O --> Light+ Sugar

Tags

NGSS.MS-LS1-6

What is the ultimate ORIGINAL source of energy for living things

• Sugar
• Sun
• Moon
• Carbon Dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the pigment in chloroplasts that performs photosynthesis?

• Chlorosynthesis
• Chlorophyll
• ADP
• Electron Transport

Tags

NGSS.MS-LS1-6

Which gas is removed from the atmosphere during photosynthesis?

• hydrogen
• oxygen
• nitrogen
• carbon dioxide

What are the products of photosynthesis?

• water and carbon dioxide
• oxygen and glucose
• oxygen and carbon dioxide
• oxygen and water

The reactants needed for photosynthesis to occur are:

• carbon dioxide & water
• carbon dioxide & oxygen
• oxygen & water
• carbon dioxide, oxygen & water

The role of the guard cell is to

• help control the temperature of the plant
• control how much water enters the leaf
• control how much glucose is stored
• control the movement of water vapour & gases 

Tags

NGSS.MS-LS2-3

Transpiration helps the plant

• make more sugars at night
• move water from the roots to the stem and leaves
• move sugars from the leaf to be stored in the stem & roots
• make more chloroplasts

Water & soluble nutrients move through the plant in 

• the phloem cells
• the xylem cells
• the root hair cells
• palisade mesophyll layer