Habitats & Ecosystems — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Which habitat is hot, sandy, and gets very little rain?
A) ocean
B) desert
C) pond
D) rainforest
A desert is a hot, dry habitat with sand, little rain, and plants like cactus.
2. Why does a polar bear have thick white fur?
A) to swim faster
B) to fly
C) to stay warm and hide in snow
D) to climb trees
Thick fur keeps polar bears warm, and the white color hides them while they hunt on snow.
3. Which animal uses gills to breathe?
A) bear
B) fish
C) rabbit
D) eagle
Fish use gills to take oxygen from water, which is why they live in oceans and ponds.
4. What three things does every habitat provide?
A) food, water, shelter
B) toys, games, books
C) cars, roads, houses
D) phones, TVs, music
Every habitat must give food, water, and shelter so plants and animals can survive.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A rainforest is a warm, wet habitat with lots of tall trees and vines.
A rainforest is a hot, wet habitat full of trees, birds, monkeys, and colorful plants.
2. A monkey uses its strong tail to swing from tree to tree.
Many monkey tails can grip branches like an extra hand for climbing trees.
3. An open habitat full of grass with few trees is called a grassland.
Grasslands are wide, flat habitats covered in grass where zebras and lions live.
4. A cactus plant stores water in its stem to live through dry desert days.
A cactus stores water so it can survive long dry spells in the hot desert.
5. Animals are best adapted for only one main habitat where they fit well.
Each animal's body is built for one habitat, so it would struggle to live somewhere else.