Science Study Guide for Chapter 1

Science Study Guide

Chapter 1

Living Things and Their Needs

(Test on Thursday)

 

All living things are organisms.

 

Everything that surrounds a living thing is called its environment.

 

Turtles are above grasshoppers in a pond food chain.

 

Plants and animals have structures that help them get what they need to survive.

 

All living things in an environment make up a community.

 

Plants and algae are examples of producers.

 

A place in which an animal can stay safe is called a shelter.

 

Food, water, and air are all considered resources.

 

An organism that eats other organisms is called a consumer.

 

The basic needs of animals include oxygen, food, and water.

 

Plants are different from other animals because plants make their own food.

 

Survival describes how living things make more of their own kind.

 

Nutrients are the substances that help living things grow and stay healthy.

 

The job or role that an organism has in its environment is its niche.

 

Leaf veins transport water from stems to leaves.

 

Needles on an evergreen tree are examples of a type of leaf structure.

 

Stems hold up a plant, carry water and food, and hold the leaves in place.

 

A quill is an example of a structure that helps keep an animal safe.

 

Lungs are animal structures that take in oxygen from the air.

 

One thing that animals have in common are that all animals eat other organisms for food.

 

Worms take in oxygen through their skin.

 

In order to survive, animals need food, water, gases, and space.

 

When living things battle each other for resources, it is called competition.

 

Growing is a word that means “changing with age”.

 

When a plant responds to sunlight, it bends toward the light.

 

The arrows in a food chain diagram show the flow of energy.

 

A tulip poplar is an example of a producer.

 

A consumer eats other organisms.

 

Producers use sunlight to make food and take nutrients from the soil. Trees and grasses are two types of producers.

 

Bonus Questions (2 points each)

 

*Why is it important for people to preserve the world’s rain forests?

The rain forests are filled with trees and plants. Trees and plants give off oxygen that people need. By cutting down rain forests, people are decreasing the world’s oxygen supply.

 

*What kinds of plants and animals would most likely survive in a desert environment?

Plants and animals that do well in hot climates and can survive on little water could live in the desert.

 

*Compare a bear with a giraffe. How do their structures help them survive?

A bear has sharp teeth and claws to help it eat. A bear also has thick fur and a lot of body fat to help it survive cold winters. A giraffe has long legs to outrun predators and a long neck to help it reach leaves that are high in trees.

 

 

 

*Bonus Questions are optional. They are used for extra credit points only on the test.