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Biology and Natural Science Quiz

Biology

A collection of factual questions regarding animals, ecosystems, and biological processes.

science nature animals environment

8 Questions Medium Ages 5+ Sep 5, 2026

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About this Study Set

This study set covers Biology through 8 practice questions. A collection of factual questions regarding animals, ecosystems, and biological processes. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 8 questions from the Biology and Natural Science Quiz study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which organ in a shark is primarily responsible for maintaining buoyancy?

A The gills
B The liver
C The swim bladder
D The dorsal fin

2 What is the primary gas released into the atmosphere by plants during the process of photosynthesis?

A Oxygen
B Carbon dioxide
C Nitrogen
D Hydrogen

3 Which of these animals is classified as an amphibian?

A Platypus
B Newt
C Crocodile
D Dolphin

4 In an ecosystem, which organisms are responsible for breaking down dead organic matter?

A Herbivores
B Producers
C Decomposers
D Omnivores

5 What is the largest species of cat currently living in the wild?

A African Lion
B Jaguar
C Cougar
D Siberian Tiger

6 Which substance gives leaves their green color?

A Carotene
B Chlorophyll
C Anthocyanin
D Xanthophyll

7 Which part of a bird's digestive tract is used for grinding food with the help of ingested grit or stones?

A Crop
B Proventriculus
C Gizzard
D Cloaca

8 What is the term for an animal that feeds exclusively on insects?

A Insectivore
B Frugivore
C Piscivore
D Granivore

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