1. End of Grade Test Review
Ecosystems
End of Grade Test Review

2. Ecosystems
Which of the following best explains how plants obtain water? a. Water is collected by leaves b. Water is absorbed through the stem c. Water is taken in through the roots d. Water is collected by flowers

3. Look at the following diagram.
Ecosystems
Look at the following diagram.
What process is being described by the diagram?
Adaptation
Digestion
Respiration
photosynthesis

4. Ecosystems
Why are decomposers necessary in the food chain? a. They provide nutrients for plants b. They photosynthesize c. They are food for carnivores d. They are prey on herbivores

5. Ecosystems
Which of the following directly use the Sun’s energy produce their own food? a. Decomposer b. Carnivores c. Consumers d. Producers

6. Ecosystems
Which of the following will most likely happen to the other organisms if all of the
mice and rabbits died?
The number of owls would decrease, and the number of insects would increase.
The number of owls would increase, and the number of insects would increase.
The number of owls would increase, and the number of insects would decrease.
There would be NO change.

7. Ecosystems
Which of the following food chains shows the correct ENGERY flow from left to right? a. Rabbit-----owl grass b. Grass------rabbit owl c. Owl------rabbit grass d. Grass owl rabbit

8. Ecosystems
The following diagram shows a frog jumping from the bank to the edge of the lily pad closest to the bank.
What will happen to the lily pad when he lands on it?
The lily pad will move away from the cattails.
The lily pad will stay in the same place.
The lily pad will go straight down and come straight
up again.
d. The lily pad will move toward the cattails.

9. Ecosystems Look at the diagram below.
How can the WOLF benefit from plants, even if it never eats plants?
The rabbit eats the plants, and the wolf eats the rabbit.
The plants help the rabbit to hide from the wolf.
The plants make the wolf run slower.
The rabbit eats the wolf, and the grass decomposes the rabbit.

10. Ecosystems
Which of the following not an adaptation that would help a plant survive in the desert? a. Very long root systems b. The ability to store water in stems c. Tiny or no leaves d. Large leaves to absorb sunlight

11. Ecosystems
Which of these adaptations would help an animal survive a cold winter season? a. Losing extra fat on the body b. Shedding fur c. Hibernating in a cave d. Sweating to release heat

12. Ecosystems
Certain types of bacteria located in the human intestine are needed for proper digestion of food. What does this suggest about bacteria?
All types of bacteria are harmful to humans.
Bacteria are only harmful when outside of the body.
Some bacteria are necessary for survival.
All bacteria are necessary for survival.

13. Ecosystems
Why are tropical rain forests found along the equator? a. There is warm, moist air in this part of the world. b. These areas are very close to the ocean. c. The soil there is very rich. d. The westerly wind bring a lot of rain clouds.

14. Ecosystems
People don’t eat grasses, but grasses are still important to people. Relating to the food chain, why are grasses important to people? a. People eat organisms that eat the grass. b. Grass surfaces are safer than concrete. c. People use grass surfaces for recreation. d. Grass fields can’t hide dangerous animals.

15. Ecosystems Look at the following food web. Owl Mouse Duck Grasshopper
crayfish
Snail
Grass
If the snail population of this ecosystem increases, which of the following is most likely
to occur?
The grass population will increase. B. The grass population will decrease.
The snails will eventually become D. The grasshopper population will
extinct increase at nearly the same rate.

16. Ecosystems
Which of the following can destroy animal habitats but can also clear the way for new plant growth? a. Earthquakes b. Erosion c. Floods d. Forest Fires

17. Ecosystems
Which of the following would have the smallest effect on the size of an animal’s population? a. The amount of food. b. The number of predators. c. The amount of daylight. d. The size of the habitat.

18. Ecosystems
What is the relationship between the Sun, plants, and animals in a food web? a. The sun provides energy for both plants and animals to make their own food. b. The sun provides energy for plants to make their own food, and animals eat plants or other animals. c. The sun provides light so animals can see which plants to eat. d. The sun provides heat energy for animals to survive, but not plants.

19. Ecosystems Look at the following table and picture. Animal Diets
Type of Animal
Main Diet
Deer
Leaves, grass, twigs
Tiger
Badgers, rabbits, deer, cattle
Chimpanzee
Leaves, fruit, seeds, small animals
Panda bear
Bamboo
These teeth most likely belong to a
Deer.
Tiger.
Chimpanzee
Panda bear

20. Ecosystems
Which of the following animals use camouflage for protection? a. Gorilla b. Flamingo c. Zebra d. Ant
Camouflage is a method of concealment that allows an otherwise visible animal, military vehicle, or other object to remain unnoticed by blending with its environment.

21. Ecosystems
The giant squid, which is found deep in the ocean, has some of the biggest eyes in the entire animal kingdom. How have these large eyes helped the squid survive? a. The large eyes help the giant squid see prey in the darkness of the deep ocean. b. The eyes act as lights and attract prey for the giant squid. c. Light reflects brightly off of the eyes to defend the giant squid against predators. d. The large eyes allow them to find places to hide from predators.

22. Ecosystems
In arctic environments, animals with white fur have a better chance of survival than animals with brown fur. Which of the following can you infer about fur color in the arctic? a. White fur makes animals less visible to predators. b. White fur keeps animals warmer. c. Brown fur keeps animals warmer. d. Brown fur makes animals less visible to predators.

23. Ecosystems
Which of the following ecosystems is most likely to have temperatures that range from very hot in the summer to very cold in the winter? a. Rain forest b. Grasslands c. Desert d. Arctic

24. Ecosystems
Which of the following would have a positive effect on the environment? a. Using a gas-powered lawn mower b. Recycling paper and glass c. Dumping waste in the lake d. Cutting down a forest for wood

25. Ecosystems
Scientists observe that cutting down trees to gather wood for houses destroys animal habitats. Which of the following animals would be most likely affected by the cutting down of trees? a. Owls b. Seals c. Sharks d. Buffalo

26. Biomes
Which biome has poor soil conditions, such as permafrost, which prevents roots to grow down into the ground? a. Grasslands b. Tundra c. Rain Forest D. Earth

27. Biomes
Which biome is home to a diverse variety of plants and animals species? Many of these animals have never been discovered. This biome experiences heavy rain and hot year round. a. Grasslands b. Tundra c. North Carolina d. Tropical Rainforest

28. Biomes
Which biome is home to Evergreen Trees, Conifers, and other trees with pine like needles? a. Rain Forest b. Taiga c. Desert d. Grasslands

29. Biomes
Which biome is home to many plants which store water, nocturnal animals, a variety of reptiles, and is usually very hot and dry during the summer and colder in the winter evening nights? a. Grasslands b. China c. Taiga d. Desert

30. Biomes
Which biome is home to four seasons with trees that lose its leaves once a year due to direct sunlight changes? a. Tundra b. Taiga C. Temperate Deciduous Forest D. Grasslands

31. Biomes
Which biome contains one central watering hole for animals, few small trees, and is a prairie like area? a. Tundra b. Taiga c. Tropical Rainforest d. Grasslands

32. Biomes
What name describes animals that eat meat such as smaller animals? a. Omnivore b. Carnivore c. Nealivore d. Herbivore

33. Biomes
What name describes animals which only eat grasses (non meat eaters)? a. Herbivore b. Carnivore c. McKeelivore d. Insectivore

34. Ecosystems
Which food chain is in the correct order? A grasshopper → grass → snake → frog → hawk B grasshopper → frog → hawk → snake → grass C grass → grasshopper → frog → snake → hawk D grass → grasshopper → snake → frog → hawk

35. Ecosystems
How have desert plants adapted to their environment? A by limiting the use of sunlight B by storing water C by distributing certain nutrients D by releasing water

36. Ecosystems
What is the role of the owl in a food web? A consumer B decomposer C herbivore D producer

37. Ecosystems
Why can frogs and snakes live in the same garden? A Both keep weeds out of the garden. B Both help different plants to grow. C Both occupy different niches. D Both compete for water.
Niche: the position or function of an organism in a community of plants and animals.

38. Ecosystems
What prevents plant growth beneath the trees in thick forests? A The trees limit the amount of sunlight that is able to reach the ground. B The roots of the trees make it difficult for plants to grow. C Little water reaches the ground under the trees. D The temperature of the soil under the trees does not allow plants to grow.

39. Ecosystems
Which is the best example of habitat reduction caused by humans? A Birds and animals flee a forest fire caused by lightning. B Birds become sick from eating insects new to their area. C Fish swimming to breeding grounds are blocked by dams. D A new species of fish migrates up a river, competing with native fish for food.

40. Ecosystems
A small fish, called a cleaner fish, picks bits of food from a shark’s teeth. What can best be concluded about this behavior? A It takes needed nutrition away from the shark. B It helps both the cleaner fish and the shark. C It removes food from inside the shark’s body. D It helps the shark blend in with its surroundings.

41. Ecosystems
Which resource do decomposers return to the environment? A light B nutrients C oxygen D water

42. Ecosystems
Which is the greatest threat to the survival of large predator species, like mountain lions and tigers? A loss of other predator species B global climate changes C loss of large wilderness areas D animal diseases

43. Ecosystems
Which statement best explains why there are fewer carnivores living in tundra environments than in other environments? A The short growing season limits the number of herbivores that support carnivores. B There is not enough sunlight for primary producers to carry out photosynthesis. C The large number of predators limits the number of carnivores that live in the tundra. D There are more disease-causing insects present in the tundra environment.

44. Ecosystems
A class wants to find the ideal temperature for plants to grow in a terrarium. If the students set up several terrariums, what should they do to get the best results? A plant different kinds of plants in each terrarium B use a light bulb with a different brightness in each terrarium C add different amounts of water to each terrarium D place different types of fertilizer in each terrarium

45. Ecosystems
Which best describes the role of a producer in an ecosystem? A to use energy from the sun to make food B to decompose dead organisms C to eat other living organisms D to feed on dead organisms

46. Ecosystems
What would most likely be the reason for a deer to move to another location? A No vegetation is left in its habitat. B No animals are left in its habitat. C No predators are left in its habitat. D No decomposers are left in its habitat

47. Ecosystems
Which type of environment is mostly populated with oak, hickory, beech, and maple trees? A taiga B deciduous forest C tundra D tropical rain forest

48. What is needed for an ecosystem to support the greatest variety of organisms over the longest period of time? A many different kinds of bacteria B many different kinds of animals C many different kinds of minerals D many different kinds of plants

49. This diagram shows a cross section of a lake.
What part of the lake would most likely have the smallest number of producers?
A 1
B 2
C 3
D 4 1 4
Water 2 3
Land