7th LS Units 4-6 Review

Multiple Select

How are instincts different from learned behaviors? Select 2 answers.

• Instincts are inherited.

• Learned behaviors are inherited.

• Instincts are gained through experience.

• Learned behaviors are gained through experience.

Multiple Select

How are endotherms different from ectotherms? Select ALL that are true.

• Ectotherms get their body heat from their environment.

• Endotherms produce most of the heat they need.

• Ectotherms use a warm surface to warm up and shade to cool down.

• Endotherms shiver when they are cold and pant/sweat when they are warm.

Multiple Select

Select ALL of the examples of competition.

• Two male kangaroos fighting over a female.

• A lion and a cheetah both hunt the same food source.

• Animals often live in herds to help the survival of the species.

• Many animals communicate with each other through sounds, scents, and movements.

Multiple Choice

When will the stomata be open?

• A plant has enough water, so the guard cells are full and rigid which holds the pore open.

• A plant does not have enough water so the guard cells are empty and limp which closes the pore.

• The plant has enough water so the guard cells are empty and limp which closes the pore.

• A plant does not have enough water so the guard cells are full and rigid which holds the pore open.

Multiple Choice

Plants respond to many types of stimuli. Some plants wrap their tendrils around objects. Which tropism is this an example of?

• thigmatropism

• gravitropism

• hydrotropism

• phototropism

Multiple Choice

Which limiting factor has the greatest impact on photosynthesis in an ecosystem?

• sunlight

• shelter

• water

• temperature

• minerals

Multiple Select

These wolves are hunting an elk. The elk eats plants. Which TWO words can describe the elk?

• predator

• prey

• producer

• consumer

• decomposer?

Multiple Select

There has been a decrease in the number of FROGS in the ecosystem. Select all of the populations that are likely to increase.

• grasshopper

• butterfly

• dragonfly

• fruit fly

• eagle

Multiple Select

Select all of the steps of the carbon cycle that release carbon.

• photosynthesis

• cellular respiration

• decomposition

Multiple Select

What is true of energy pyramids? Select TWO answers.

• Energy decreases as we move up the pyramid.

• Energy decreases as we move down the pyramid.

• Much of the energy lost is lost as heat.

• Energy is gained as we move up the pyramid.

Multiple Select

Select all of the NEGATIVE results of a volcanic eruption.

• Ash falls on the ground, making it rich for plant growth.

• Ash blocks the sunlight, making photosynthesis difficult.

• Lava hardens into rock, making the soil unusable.

• Ash fills the air, making breathing difficult.

Multiple Choice

Which area has the highest biodiversity?

• near the equator

• near the poles

• dry areas

• newly disturbed area

Multiple Choice

Fossils of a species are found in older rock layers, but not in newer ones. What most likely happened to this species?

• They became extinct.

• They no longer die.

• They can no longer be fossilized.

• They were all eaten and none fossilized.

Multiple Choice

Which organism is likely most closely related to the sea turtle?

Multiple Select

Lions are predators that live in the savannah. Select all of the adaptions that the lion has that helps it capture prey.

• Their fur is a similar color to the plant life that allows them to blend in.

• They have strong leg muscles that help them run fast.

• Their manes help keep them warmer in cooler climates.

• They can eat up to 70 pounds in one sitting.

Multiple Choice

Bees pollinate flowers that they can easily see. This pollination is necessary for the plants to reproduce. If a population of bees that can see purple better are pollinators a meadow of flowers, what is likely to happen?

• The meadow will have more purple flowers next year.

• Many flowers will stop blooming if they aren't purple.

• The meadow will have an equal number of flowers of all colors.

• Flowers that were blue will switch to purple the next year.

Multiple Select

Which factors lead to evolution in a population. Select ALL that apply.

• limited resources

• predation

• competition

• genetic variations