Science 7 Unit 4 Zebra Survival Pre-test

Read the following passage about the predator and prey relationships between animals in a forest ecosystem. Classify the animals into the appropriate category according to their interactions in the passage. A rabbit runs through the forest trying to escape the talons of a red-tailed hawk that is trying to feed its offspring. In the same forest, a snake is curling around a possum in expectation of an easy meal. Prior to being caught by the snake, the possum had dined on a breakfast of insects. Later that afternoon, a fox wandering through the forest finds a snake, unable to move because of its large meal, and effectively kills it for an easy meal.

Select the Predators Only A. snake B. fox C. rabbit D. possum E. insects F. red-tailed hawk​ ​ ​ ​ (a)   ​ (b)   ​

• snake
• rabbit
• insects
• possum
• red-tailed hawk
• fox

Read the following passage about the predator and prey relationships between animals in a forest ecosystem. Classify the animals into the appropriate category according to their interactions in the passage. A rabbit runs through the forest trying to escape the talons of a red-tailed hawk that is trying to feed its offspring. In the same forest, a snake is curling around a possum in expectation of an easy meal. Prior to being caught by the snake, the possum had dined on a breakfast of insects. Later that afternoon, a fox wandering through the forest finds a snake, unable to move because of its large meal, and effectively kills it for an easy meal.

Select the Prey Only A. snake B. fox C. rabbit D. possum E. insects F. red-tailed hawk​ ​ ​ ​ ​ (a)   ​ ​ (b)  

• snake
• red-tailed hawk
• insects
• possum
• rabbit
• fox

Tags

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Read the following passage about the predator and prey relationships between animals in a forest ecosystem. Classify the animals into the appropriate category according to their interactions in the passage. A rabbit runs through the forest trying to escape the talons of a red-tailed hawk that is trying to feed its offspring. In the same forest, a snake is curling around a possum in expectation of an easy meal. Prior to being caught by the snake, the possum had dined on a breakfast of insects. Later that afternoon, a fox wandering through the forest finds a snake, unable to move because of its large meal, and effectively kills it for an easy meal.

Select what can be Both Predator and Prey. A. snake B. fox C. rabbit D. possum E. insects F. red-tailed hawk​ ​ ​ ​ ​ (a)   ​ ​ (b)  

• snake
• red-tailed hawk
• insects
• possum
• rabbit
• fox

Tags

NGSS.MS-LS2-2

Biodiversity provides strength and stability to ecosystems on our planet. There are several ways scientists classify biodiversity. Determine which type of diversity is represented by the descriptions given. Select the Ecosystem Diversity options.

• A. Europe has deserts, forests, and grasslands

• B. Dogs have many different breeds

• C. Coral reefs have more species of fish than anywhere else in the ocean

• D. Traveling from Maine to California you will see forests, mountains, and deserts

• E. Snails have many different patterns on their shells

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Biodiversity provides strength and stability to ecosystems on our planet. There are several ways scientists classify biodiversity. Determine which type of diversity is represented by the descriptions given. Select the Genetic Diversity options.

• A. Europe has deserts, forests, and grasslands

• B. Dogs have many different breeds

• C. Coral reefs have more species of fish than anywhere else in the ocean

• D. Traveling from Maine to California you will see forests, mountains, and deserts

• E. Snails have many different patterns on their shells

Tags

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Biodiversity provides strength and stability to ecosystems on our planet. There are several ways scientists classify biodiversity. Determine which type of diversity is represented by the descriptions given. Select the Species Diversity options.

• A. Europe has deserts, forests, and grasslands

• B. Dogs have many different breeds

• C. Coral reefs have more species of fish than anywhere else in the ocean

• D. Traveling from Maine to California you will see forests, mountains, and deserts

• F. The rainforest has more than 1000 species of insects

Organisms in overpopulated areas struggle to survive because _______. Select all that apply.

• there is not enough space

• there is not enough sunlight

• there is not enough food, water, and shelter

• there are not enough mates

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When a particular environment of a species undergoes an unfavorable drastic change, what might happen to this species?

• 1. it may not be able to adapt and may become extinct.

• 1. it may not be able to adapt and its numbers may increase.

• 1. it will adapt and its numbers will decrease.

• 1. it more than likely will not be affected by the environmental change.

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During a field study, scientists removed large, grain-eating rodents (Kangaroo rats) from a specific area and measured the populations of other rodents in the same area. They also measured populations of rodents in control plots from which the grain-eating rodents were not removed. Results of the study are shown in the graph above. Which best summarizes the results of this study?

• The removal of the Kangaroo rats had no measurable effect on populations of other rodents in the area.

• Only populations of grain-eating rodents were measurably affected when the Kangaroo rats were removed.

• Only populations of insect-eating rodents were measurably affected when Kangaroo rats were removed.

• Populations of other rodents in the area increased significantly when Kangaroo rats were removed.

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An ecologically healthy area has ______________________________.

• a few species with very few individuals of each species

• a few species with a sustainable number of individuals of each species

• many species with very few individuals of each species

• many species with a sustainable number of individuals of each species

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