๐ฑ Quick Study Guide: Grade 3 Biology Laws
- ๐ก What are Living Things? Living things grow, move, reproduce, and need food, water, and air to survive. Examples: plants, animals, humans.
- ๐ซ Non-Living Things: Things that do not grow, move on their own, or need food/water. Examples: rocks, toys, clouds.
- ๐ง Basic Needs of Living Things: All living things need:
- ๐ Food: To get energy to grow and stay healthy.
- ๐ Water: Essential for all life processes.
- ๐ฌ๏ธ Air: To breathe (oxygen for most, carbon dioxide for plants).
- ๐ Shelter/Space: A safe place to live and grow.
- ๐ฆ Life Cycles: Living things go through stages.
- ๐พ Plant Life Cycle: Seed $\rightarrow$ Sprout $\rightarrow$ Young Plant $\rightarrow$ Adult Plant (with flowers/fruits) $\rightarrow$ Seeds.
- ๐ Butterfly Life Cycle: Egg $\rightarrow$ Larva (caterpillar) $\rightarrow$ Pupa (chrysalis) $\rightarrow$ Adult Butterfly.
- ๐ Habitats: The natural home or environment of an animal, plant, or other organism. Animals and plants live in habitats that provide all their basic needs. Examples: forest, ocean, desert.
๐ง Practice Quiz: Grade 3 Biology Essentials
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Which of these is a characteristic of a living thing?
A) It can fly very high.
B) It needs food to grow.
C) It is made of metal.
D) It stays the same size forever.
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Which of the following is NOT a basic need for most living things?
A) Food
B) Water
C) Toys
D) Air
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What comes right after a 'seed' in the plant life cycle?
A) Flower
B) Fruit
C) Sprout
D) Tree
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What is a caterpillar also known as in the butterfly life cycle?
A) Pupa
B) Egg
C) Adult
D) Larva
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A polar bear lives in the Arctic where it's very cold. This cold place is its:
A) Food
B) Shelter
C) Habitat
D) Water source
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Why do plants need sunlight?
A) To stay warm.
B) To make their own food.
C) To attract animals.
D) To grow taller.
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Which of these actions shows that a kitten is a living thing?
A) It sleeps a lot.
B) It drinks milk and grows bigger.
C) It plays with a ball.
D) It purrs when happy.
Click to see Answers
1. B
2. C
3. C
4. D
5. C
6. B
7. B