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Unit 8 Review - Structures & Functions

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Last updated almost 2 years ago
20 questions
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Question 1
1.

Question 2
2.

Question 3
3.

Which organism is a vertebrate, an organism with a spine?

Question 4
4.

Question 5
5.

Which animal’s tusks are most likely used to help them climb out from water onto the ice?

Question 6
6.

Question 7
7.

Which structure is NOT primarily used for helping an animal sense its environment?

Question 8
8.

Question 9
9.

Question 10
10.

Question 11
11.

Question 12
12.

Question 13
13.

Question 14
14.

Question 15
15.

Four functions of claws are shown in the box.


Which table best matches the animal to the function of its claws?

Question 16
16.

Question 17
17.

Question 18
18.

Question 19
19.

Question 20
20.

Four flowering plant structures are listed.


Which table best matches the plant structure to the function?

A ptarmigan’s feathers change from brown in the summer to white in the winter. An Arctic hare’s fur changes from brown or gray in the summer to white in the winter.


In which environment are animals with this adaptation best suited?
Tundra
Rainforest
Desert
Ocean
The barrel cactus can expand and contract similar to a balloon! During rain, the barrel cactus’s volume increases to store water. As they use up the water, their volume decreases. When it rains again, the cactus expands.


What characteristic of the environment does the adaptation described help the barrel cactus adapt to?
Flooding
Icy conditions
Strong winds
Drought
The Jackson’s chameleon is an insect- eating reptile that lives in mountain forests. Unlike most other chameleons, female Jackson’s chameleons give birth to their babies. The babies are born brown but turn green. Males have three horns. Females have no horns. All Jackson’s chameleons have a curled prehensile tail.

What characteristic of the Jackson’s chameleon is used by a male to defend its territory?
Its prehensile tail
Giving live birth
Its 3 horns
Coloring changing from brown to green
Sugar gliders are marsupials from Australia that have a built in parachute. While these creatures can’t actually fly, they can glide as they leap from tree to tree. To glide, they use flaps of skin that are connected to the front and hind legs.

Which organism’s structure has a similar function as the sugar glider’s skin flaps?
A bird with wings that flap to move through the air
A snake that can flatten its body to drop from higher trees to lower trees
A raccoon that uses its sharp claws for protection
A squirrel’s rotating hind feet that help it run down a tree
The chart describes the white-tailed deer and dama gazelle


What characteristic of the white-tailed deer helps it stay warm in a cold environment?
Hollow hairs
Horns
Hooved feet
Lack of upper teeth
Many prairie grasses and aquatic plants have flexible stems. How does this adaptation help these plants survive in different environments?
Flexible stems allow prairie grasses and aquatic plants to attract pollinators.
Flexible stems in prairie grasses reduce the need for strong roots. Flexible stems in aquatic plants reduce the need for sunlight.
Flexible stems in prairie grasses help capture sunlight for photosynthesis. Flexible stems in aquatic plants reduce water loss.
Flexible stems allow prairie grasses to bend and move in the wind and aquatic plants to move with water currents.
Both sloths and koalas spend nearly all of their time in trees. Both animals sleep over 15 hours a day! Both are herbivores. Koalas munch exclusively on eucalyptus leaves, while sloths eat a variety of leaves.


How do sharp claws help both the koala and sloth survive?
Sharp claws help them capture prey.
Sharp claws help them climb and move through an arboreal environment.
Sharp claws help them dig in the dirt for food.
Sharp claws help them grip the ground when running.
Four characteristics of different plants are listed.


What is the function of all four characteristics?
Taking in carbon dioxide
Obtaining water
Seed dispersal
Pollination
Unlike most mammals, elephant seals spend most of their time underwater. They have large amounts of blubber, nostrils that can remain closed for long periods, large noses in adult males, and whiskers.

Which characteristic of the elephant seal helps it sense its environment?
Blubber
Closed nostrils
Large nose
Whiskers
Scales are made of keratin, the same material in your hair and fingernails. Most reptiles, such as alligators and snakes, have scales. A pangolin is a scaly- skinned, nocturnal mammal that lives in forests and grasslands. It can curl into ball to protect its body, burrow underground, and climb trees. It is a toothless insectivore that uses its claws to dig up ant and termite mounds for a delicious feast!


What is most likely the function of a pangolin’s scales?
Moving easily through water
Digging for insects
Climbing trees
Protection from predators
The chart describes some plant adaptations.


Based on these adaptations, which of the plants are most likely located in the desert?
Plant X only
Plants W, X, and Y
Plants W and Y
Plants X and Z
Toads and frogs are both amphibians. While toads spend most of their time on land, frogs spend most of their time in water.


Which statement does NOT describe how the body structures help them move in their environments?
Frogs have webbed feet to help them swim.
Toads have long toes for walking.
Toads have wide bodies for floating and swimming.
Frogs have long hind legs for jumping.
Sea lions and camels live in very different environments, but both have nostrils that can close.

How does this ability help them survive in their unique environments?
In an aquatic environment, this ability helps prevent water from getting in sea lions’ noses. In the sandy desert, this ability prevents sand from getting in camels’ noses.
In a terrestrial environment, this ability helps prevent water from getting in sea lions’ noses. In the aquatic desert, this ability prevents sand from getting in camels’ noses.
In a dry terrestrial environment, this ability helps prevent water from getting in sea lions’ noses. In a sandy terrestrial environment, this ability prevents sand from getting in camels’ noses.
In an arboreal environment, this ability helps prevent water from getting in sea lions’ noses. In the sandy desert, this ability prevents sand from getting in camels’ noses.
The chart describes some beak and foot adaptations that help four bird species survive in different habitats.


Based on these adaptations, which of the birds most likely live in a forest environment?
Birds W and X
Birds Y and Z
Birds W and Z
Birds X and Y
The pictures show two types of trees that can survive cold winters.


While these trees grow in similar environments, their leaves have different structures. What differences in the structure of the leaves of these plants help them survive during cold winters?
The thin shape of pine needles help them catch rainwater. The broad shape of oak leaves help them release more water into the atmosphere.
Thin, waxy pine needles limit water loss in the winter and prevent snow buildup. Oak leaves drop during autumn to prevent water loss and snow buildup in winter.
Long, thin pine needles help them avoid sunlight in winter. Thick, broad oak leaves help them catch water in winter.
Thin pine needles attract birds and insects for pollination in cold months. Broad leaves that drop in autumn allow more sunlight to reach the soil.