Exploring Natural Sciences

What part of the plant performs photosynthesis?

• Roots

• Flowers

• Leaves

• Stems

What is needed for photosynthesis?

• Sunlight, carbon dioxide, and water

• Oxygen and nitrogen

• Sunlight and soil

• Carbon monoxide and minerals

Which organ helps humans breathe?

• Heart

• Kidneys

• Liver

• Lungs

What is the state of water at 0°C?

• Water can be solid (ice) or liquid at 0°C.

• Water is always a gas at 0°C.

• Water can only be a gas at 0°C.

• Water is always a solid at 0°C.

Which organ system is responsible for digestion?

• Digestive system

• Nervous system

• Circulatory system

• Respiratory system

What gas do plants absorb during photosynthesis?

• carbon dioxide

• nitrogen

• hydrogen

• oxygen

What is the primary function of the roots in plants?

• To store energy in the form of starch.

• To facilitate photosynthesis in leaves.

• To anchor the plant and absorb water and nutrients.

• To produce flowers and seeds.

Which process involves the conversion of liquid to gas?

• Freezing

• Condensation

• Evaporation or Boiling

• Sublimation

What is the main component of the human circulatory system?

• Heart

• Brain

• Lungs

• Kidneys

What type of energy is used in photosynthesis?

• Thermal energy

• Chemical energy

• Nuclear energy

• Light energy