Birds and mammals are warm-blooded. What does that sentence mean?

Their body temperatures do not change much

What role does the blue crab play in the ecosystem?

It breaks down dead plant and animal matter into nutrients

Which animal adaptations are most likely to become common?

adaptations that help an animal survive

How do the grasses in the wetlands support the ecosystem?

They have stored energy inside their leaves for animals

How are the grass and the insects linked in the food chain?

The grass produces food for the insects to consume

Which best describes a well-balanced environment?

an equal amount of predators to prey

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Ecosystems Review

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Questions 26

Answers

1
What structure determines whether an animal is classified as a vertebrate or invertebrate?
heart
backbone
brain
nerves
2
Birds and mammals are warm-blooded. What does that sentence mean?
They get really angry for no good reason.
Their blood is warm in winter and cold in summer
Their body temperatures rise and fall when weather changes
Their body temperatures do not change much
3
What role does the blue crab play in the ecosystem?
It produces food for the insects by catching fish
It breaks down dead plant and animal matter into nutrients
It keeps the grass cut short with its powerful claws
It keeps thirsty animals from drinking all the water
4
A hedgehog survives a grass fire. Why does the hedge hog need to find a new place to live?
to change climates
to take a vacation
to find water and food
to stay away from other animals living in its environment
5
Which kinds of plants reproduce with spores, not seed?
all flowering plants
trees that bear fruit, such as peach trees and apple tree
grains and other grass plants
mosses and ferns
6
Which chain best describes the flow of energy in an ecosystem?
Sun-Grass-Mouse-Hawk
Hawk-Mouse-Grass-Sun
Sun-Mouse-Grass-Hawk
Grass-Mouse-Hawk-Sun
7
Which animal adaptations are most likely to become common?
adaptations that shorten an animal's life span
adaptations that make an animal easier to catch
adaptations that turn animals bright colors
adaptations that help an animal survive
8
Beginning life in water and moving later to land describes which of these animal groups?
amphibians
mammals
bony fish
reptiles
9
The lion belongs to which kingdom?
plant
bacteria
fungi
animal
10
Which of the following is a basic need for plants and animals?
desert
grasslands
water
friends
11
One of Earth's large ecosystems, with its own kind of climate, soil, plants, and animals is
a taiga
a biome
a habitat
a food web
12
When an animal blends in with its surroundings, it is using ______.
mimicry
hibernation
camouflage
migratiion
13
To survive in cold water whales adapted by developing a ______.
thick layer of blubber
thick layer of fur
thick layer of dry skin
thick layer of scales
14
What are a fish's fins and an elephants trunk examples of?
adaptations
mimicry
protective resemblance
camouflage
15
Which describes an area that is hot and humid with plenty of rainfall?
tropical rain forest
ocean
desert
tundra
16
An environment had a dry season. Animal populations would MOST likely _____.
leave empty Aquafina bottles everywhere
go up
go down
stay the same
17
When plants and animals cannot adapt to their environment, their population
grows bigger
survives
dies off
stays the same
18
All living things need energy. Where do plants get their energy to live and grow?
from the food they produce
the soil they grow in
from the water their roots absorb
from the oxygen in the air
19
What is photosynthesis?
how plants make their food
how plants get water
how animals hunt
how rain is made
20
During the summer, desert animals
hunt during the day
feed only on plants
hunt during the night
breathe through their mouths to keep cool
21
Which adaptation helps cacti survive in the desert?
thick, waxy skin
dark color
large leaves
thin branches
22
How do the grasses in the wetlands support the ecosystem?
They soak up the water so there will dry places to walk
They change oxygen to carbon dioxide so animals can breathe
They have stored energy inside their leaves for animals
They change oxygen into water for animals to drink
23
How are the grass and the insects linked in the food chain?
The grass produces food for the insects to consume
The grass hides the insects so they can attack the birds
The grass consumes the insects
The insects produce food for the grass
24
Which best describes a well-balanced environment?
all prey and no predators
more predators than prey
an equal amount of predators to prey
more prey than predators
25
What is the first source of energy in every food chain?
decomposers
plants and other producers
the sun
consumers
26
If you touch a turtle, it will retract into its shell. Why does it do this?
to take a nap
to protect itself
to prepare to run away quickly
it is hoping you will stick you finger in so it can bite you

Ecosystems Review Flashcards | StudBud