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What is the process by which plants lose water vapor through their leaves?

  • (A) Evaporation
  • (B) Transpiration
  • (C) Condensation
  • (D) Precipitation

Answer: Transpiration

Transpiration is the process by which plants release water vapor into the atmosphere through small pores in their leaves.

What is the primary function of white blood cells in the body?

  • (A) Transport oxygen
  • (B) Fight infections
  • (C) Produce hormones
  • (D) Digest food

Answer: Fight infections

White blood cells are part of the immune system and help protect the body by fighting infections and foreign invaders.

What is the chemical formula for hydrogen?

  • (A) H2
  • (B) H3
  • (C) H4
  • (D) H

Answer: H2

Hydrogen has the chemical formula H2, which consists of two hydrogen atoms bonded together in a molecule.

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What is the function of the chloroplast in plant cells?

  • (A) Produce oxygen
  • (B) Store food
  • (C) Carry out photosynthesis
  • (D) Break down waste

Answer: Carry out photosynthesis

Chloroplasts are specialized cell organelles in plant cells that capture light energy to carry out photosynthesis.

Which part of the human body is responsible for digestion?

  • (A) Heart
  • (B) Stomach
  • (C) Liver
  • (D) Lungs

Answer: Stomach

The stomach is where most food digestion begins, breaking down food with acids and enzymes before it enters the intestines for further digestion.

What is the energy source used by plants for photosynthesis?

  • (A) Water
  • (B) Oxygen
  • (C) Sunlight
  • (D) Soil

Answer: Sunlight

Plants use sunlight as their primary energy source to carry out photosynthesis, converting light energy into chemical energy.

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Which of the following is a characteristic of a solid?

  • (A) No definite shape
  • (B) Fixed volume
  • (C) Can flow
  • (D) Can compress

Answer: Fixed volume

Solids have both a definite shape and a fixed volume. Unlike liquids and gases, solids do not change shape or compress easily.

Which planet is known for having a large, stormy red spot?

  • (A) Mars
  • (B) Venus
  • (C) Jupiter
  • (D) Saturn

Answer: Jupiter

Jupiter is known for its Great Red Spot, which is a massive storm that has been observed for centuries.

What is the chemical symbol for the element sodium?

  • (A) S
  • (B) Na
  • (C) N
  • (D) Sn

Answer: Na

Sodium is represented by the chemical symbol Na, which is derived from the Latin word Natrium.

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What does the process of respiration involve in humans?

  • (A) Conversion of food into energy
  • (B) Absorption of nutrients
  • (C) Production of oxygen
  • (D) Synthesis of food

Answer: Conversion of food into energy

Respiration is the biochemical process that converts food (glucose) into energy (ATP) for cells in the body.

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