Biology and Environmental Science Questions

Science

A collection of questions covering asexual reproduction, crop production, the role of microbes in environmental cleaning, renewable energy sources, combustion, biodiversity threats, and the differences between eggs and sperm, and external and internal fertilization.

Biology Environment Reproduction

9 Questions Medium Ages 12+ Mar 17, 2026

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About this Study Set

This study set covers Science through 9 practice questions. A collection of questions covering asexual reproduction, crop production, the role of microbes in environmental cleaning, renewable energy sources, combustion, biodiversity threats, and the differences between eggs and sperm, and external and internal fertilization. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 9 questions from the Biology and Environmental Science Questions study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What are the chief methods of asexual reproduction?

A Budding, fission, and fragmentation
B Sexual reproduction and vegetative propagation
C Meiosis and mitosis
D Pollination and fertilization

2 Why is crop production considered very important to humans?

A It provides food and raw materials
B It is a source of entertainment
C It helps in climate control
D It is primarily for aesthetic purposes

3 How are microbes useful in cleaning the environment?

A By decomposing waste materials
B By producing harmful toxins
C By consuming all plant life
D By increasing air pollution

4 What is a renewable source of energy?

A Energy that can be replenished naturally
B Energy that is finite and depletes over time
C Energy derived from fossil fuels
D Energy that causes significant pollution

5 Which of the following is a condition necessary for the combustion of a fuel?

A Presence of an oxidizer (like oxygen)
B Absence of heat
C Low fuel concentration
D Low oxygen levels

6 Why are all conditions necessary for combustion?

A Because combustion is a chemical reaction requiring specific inputs
B Because it is a physical process
C Because it only needs fuel
D Because heat alone is sufficient

7 How is biodiversity threatened?

A Habitat destruction and pollution
B Increased conservation efforts
C Sustainable farming practices
D Reduced human population

8 Differentiate between Egg and Sperm.

A Egg is female gamete, larger; Sperm is male gamete, smaller and motile
B Sperm is female gamete, larger; Egg is male gamete, smaller and motile
C Both are identical in size and function
D Egg is motile, Sperm is stationary

9 Differentiate between External and Internal fertilization.

A External fertilization occurs outside the body; Internal fertilization occurs inside the body
B External fertilization occurs inside the body; Internal fertilization occurs outside the body
C Both occur only outside the body
D Both occur only inside the body

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