ECOSYSTEMS TEST

Which of the following is an example of an abiotic factor in an ecosystem?

• Moss

• Rabbits

• Sun

• Grass

Tags

NGSS.MS-LS2-3

What is the purpose of a plant's respiration?

• Produce oxygen

• Produce energy

• Produce food

• Produce seeds

Tags

NGSS.MS-LS1-7

What natural process allows plants to convert solar energy into chemical energy and sugar?

• Respiration

• Photosynthesis

• Decomposition

• Fermentation

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

When does a plant start to perform photosynthesis?

• When it is a seed

• When the root grows

• When it has leaves

• When it is placed in the soil

Tags

NGSS.MS-LS1-6

What biotic factor refers to all organisms that decompose organic matter in an ecosystem?

• Producers

• Consumers

• Decomposers

• Herbivores

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The science classroom, like any ecosystem, has biotic and abiotic factors. Which of the following are examples of biotic and abiotic factors that may be present there?

• Biotic: Students, Plants; Abiotic: Desks, Air

• Biotic: Desks, Air; Abiotic: Students, Plants

• Biotic: Books, Chalk; Abiotic: Teachers, Computers

• Biotic: Computers, Teachers; Abiotic: Books, Chalk

Tags

NGSS.MS-LS2-3

Camila traveled to a desert where she found a cactus that she liked very much and wanted to take it home. After a week, the cactus was very small and black. Why did the cactus not survive at home?

• Lack of sunlight

• Overwatering

• Too much sunlight

• Pest infestation

Tags

NGSS.MS-LS1-5

A certain ecosystem experienced a phenomenon that covered its sky with a layer of black smoke that prevents sunlight from entering. How does this affect the food chains of this ecosystem?

• Photosynthesis decreases, affecting plant growth and herbivores.

• Increased sunlight leads to more plant growth.

• No effect on the ecosystem.

• Animals become more active due to cooler temperatures.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A strange disease is causing the population of snakes in Mooresville to decrease drastically. What would happen to the population of frogs if the snakes continue to die?

• The population of frogs would increase.

• The population of frogs would decrease.

• The population of frogs would remain the same.

• The population of frogs would become extinct.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

All food webs and food chains begin with _________________.

• primary consumer
• producers
• secondary consumers
• predators

Tags

NGSS.MS-LS2-3