BPP Science 1 — Questions and Answers
Question 1: What is the basic unit of life?
- Atom
- Cell (Correct answer)
- Tissue
- Organ
Correct answer: Cell
The cell is the fundamental structural and functional unit of all living organisms.
Question 2: Which gas do plants absorb during photosynthesis?
- Oxygen
- Nitrogen
- Carbon Dioxide (Correct answer)
- Hydrogen
Correct answer: Carbon Dioxide
Plants absorb carbon dioxide from the atmosphere and use it along with sunlight and water to produce glucose during photosynthesis.
Question 3: What is the chemical formula for water?
- HO
- H2O (Correct answer)
- H2O2
- OH
Correct answer: H2O
Water consists of two hydrogen atoms bonded to one oxygen atom, giving it the formula H2O.
Question 4: Which planet is closest to the Sun?
- Venus
- Earth
- Mars
- Mercury (Correct answer)
Correct answer: Mercury
Mercury is the innermost planet in our solar system and orbits closest to the Sun.
Question 5: What force keeps objects on Earth's surface?
- Magnetism
- Friction
- Gravity (Correct answer)
- Tension
Correct answer: Gravity
Gravity is the attractive force that pulls objects toward Earth's center and keeps them on its surface.
Question 6: Which organ pumps blood throughout the human body?
- Lungs
- Liver
- Kidney
- Heart (Correct answer)
Correct answer: Heart
The heart is the muscular organ responsible for pumping blood through the circulatory system to all parts of the body.
BPP Science 1
What is the basic unit of life?