LockeD! - 5.12A - Interaction with Ecosystem #4

Which best describes how the Strangler Fig interacts with its ecosystem in order to survive?

-In the rainforest, Strangler Fig seedlings begin growing on other trees, wrapping roots around the host tree. When the roots reach the ground, the Strangler Fig takes root and grows larger than the host tree, taking nutrients form the host tree and growing to the height of the rainforest canopy.

• The fig produces its own food and does not use nutrients from other trees

• The rainforest floor does not receive much sunlight, so the fig must compete for sunlight and nutrients

• The fig roots rot in the wet rainforest

• The fig needs drier climate than other rainforest plants, so the fig must grow to reach sunny areas

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In Africa, lions chase and kill their prey. The lion family eats all it wants and then vultures come and finish the rest. The interaction between the lions and vultures is an example of –

• the lion not being harmed by the relationship and the vultures benefiting

• the lion benefiting from the relationship and the vultures being harmed

• the lions benefiting by consuming the vultures as food

• both the lion and the vultures competing with one another for food

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Scientists observe that the deer populations is growing and worry there will not be enough plants for the deer during the winter. Why are the scientists worried about the deer and not the plants?

• The deer need plants to eat, but the plants only need sunlight and water

• The deer need water stored in the plants in the winter, but the plants do not

• The plants are nonliving elements

• The plants use oxygen which deer need in order to survive

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Colorado elk need food, water, and air to sustain their population. Based on this information, what statement is true regarding the elk’s ecosystem?

• Elk lack dependence on living and nonliving elements in their environment

• Too many factors limit the elk’s survival within their ecosystem

• Living organisms are independent of nonliving elements within the ecosystem

• Living and nonliving factors work together to keep the elk’s ecosystem functioning

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When studying ecosystem interactions, student collected living and nonliving objects found in the schoolyard, and took them back to the classroom to observe. Which science equipment would be important to use while collecting objects outdoors?

• terrariums

• Gloves

• thermometers

• notebooks

A burrowing shrimp with poor eyesight digs a hole in the sand for both it and the goby fish to live. When danger approaches, the fish touches the shrimp’s tail and they both hide in the hole. Based on the population chart above, predict what will happen to the shrimp population in 2013?

• increase

• decrease

• stay the same

• Die out completely

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Dogs and ticks share the same ecosystem. How do dogs and ticks interact within an ecosystem?

• Ticks benefits by feeding on dogs’ blood

• Dogs benefit by obtaining nutrients from ticks

• Neither dogs nor ticks benefit from the relationship

• Both dogs and ticks benefit from the relationship

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For protection, hermit crabs use gastropod shells to hide their bodies so that only their heads are visible. Students plan to research why the population of hermit crabs has been decreasing. One question they should ask is—

• Who has a hermit crab for a pet?

• Do hermit crabs make sounds?

• What colors are hermit crabs?

• Have any changes occurred in their ecosystem?

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After observing an outdoor ecosystem, a student wrote the following conclusion in a science notebook:

Ecosystems are only made of living things.

Was the the students’ conclusion logical?

• Yes, because ecosystems are made of living things that interact.

• No, because ecosystems are made of living and nonliving things that interact

• Yes, because ecosystem is another name for habitat

• No, because an ecosystem has nothing to do with living things

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Tundra plants are often dark in color because dark colors absorb more heat from the Sun. This adaptation helps them survive in the tundra’s—

• blazing temperatures

• dramatic climate changes

• frigid temperatures

• changing land surface

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