Which Organisms Make Their Own Food

Which statement is true?

• All autotrophs use energy from sun to make food.

• All autotrophs need a source of energy to survive.

• All autotrophs manufacture their own energy.

• All autotrophs use chemical energy to make food.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What does the phrase “extreme environments” suggest as it is used in the sentence below?

Organisms that use chemosynthesis live in extreme environments, where the toxic chemicals needed for oxidation are found.

• that the organisms live in places where toxins are scarce

• that the organisms live off the high heat of the sun

• that the organisms live far away and by themselves

• that the organisms live in harsh conditions

Which resources MAY be used by autotrophs to make their food?

1. oxygen

2. glucose

3. soil

4. carbon dioxide

5. hydrogen sulfide

• 1 and 2

• 2 and 3

• 3 and 4

• 4 and 5

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Read the sentence from the section “Autotrophs In The Food Chain."

An increase in the number of autotrophs will usually lead to an increase in the number of animals that eat them. However, a decrease in the number and variety of autotrophs in an area can devastate the entire food chain.

Which of the following words, if it replaced the word "devastate" in the sentence above, would change the meaning of the sentence?

• ruin

• destroy

• wreck

• attack

Which BEST describes trophic relationships in ecosystems?

• A primary consumer can make its own food, while a producer cannot.

• A primary consumer eats other organisms, while a secondary consumer eats it.

• A secondary consumer can make its own food, while a primary consumer cannot.

• A producer can make its own food, while a primary consumer cannot.

Tags

NGSS.MS-LS2-3

Which selection from the article is BEST illustrated by Image 3?

• Most autotrophs use a process called photosynthesis to make their food.

• In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide

  from the air into a nutrient called glucose.

• Plants also use glucose to make cellulose, a substance they use to grow and build cell walls.

• Some rare autotrophs produce food through a process called chemosynthesis, rather than through

  photosynthesis.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following BEST explains how matter and energy cycle through ecosystems?

• Animals manufacture energy from sunlight by eating plants.

• Animals grow larger by soaking in energy from sunlight.

• Animals use sunlight to boost up their energy levels.

• Animals eat plants that have used energy from sunlight.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Based on the images and the article, what conclusion can be made?

• Autotrophs can perform both photosynthesis and chemosynthesis.

• There are various types of autotrophs that can be found in many places.

• Autotrophs use the glucose that they produce as energy to grow.

• There are various types of autotrophs that can make food without the sun.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3