Aquatic Science - Unit 6

3) What is true about biotic and abiotic factors? Select all that apply.

Biotic factors include all six kingdoms of life. Biotic factors are living things, as well as the things that were once living. Abiotic factors make up the environment of an ecosystem and include many other nonliving things, such as rocks, sand, light, and temperature.

11) Why might scientists be concerned with a changing habitat?

Changing may threaten an entire population or community.

All ecosystems combined make up the hydrosphere.

False

10) _______________ are also known as primary consumers.

Herbivores

16) What is the difference between herbivores, carnivores, and omnivores?

Herbivores are animals that only eat plants, carnivores are animals that only eat other animals, and omnivores are animals that eat both plants and other animals.

8) How is energy transferred from one organism to another? Select all that apply.

The sunlight is used by the producers for photosynthesis. Once the producers have turned energy into sugar, other organisms feed of them and pass it along.

7) What is a species?

a group of organisms that are closely related and are able to mate and produce fertile offspring

3) What is a decomposer?

a special type of consumer that feeds off dead and decaying matter for its energy

8) What is a population?

all the members of one species living together in the same place at the same time

1) What is an ecosystem?

all the organisms in a certain area living together and interacting with each other, as well as with their environment

9) What is a community?

all the populations of all the different species living together in the same place and interacting with each other

18) What is a estuary? Select all that apply.

an area where a river meets the ocean an area where freshwater mixes with saltwater

2) What is a consumer?

an organism that feeds off other organisms for its energy

1) What is a producer?

an organism that is able to create its own energy

9) What is a herbivore? Select all that apply.

animals that are known as primary, or first, consumers animals that only eat plants, or producers

13) What is an omnivore?

animals that eat both plants and other animals

11) What is a carnivore? Select all that apply.

are called tertiary consumers if they eat others carnivores animals that only eat other animals when they only eat herbivores are called secondary consumers

7) Producers are also known as , while consumers are also known as .

autotroph heterotrophs

4) The six kingdoms of life are __________ factors.

biotic

4) An example of a producer can be ____. Select all that apply.

cyanobacteria phytoplankton algae plants

5) Some abiotic factors are ____. Select all that apply.

energy mineral nutrients oxygen, water

17) What is true about food chains and food webs? Select all that apply.

food webs express all transfer of energy that occur in ecosystems at all the different levels food webs express all the different consumer and producer relationships food chains only show one direction of consumption

6) An example of a decomposer can be ____. Select all that apply.

fungi certain bacteria protists

2) What are some things that an ecosystem needs in order to survive? Select all that apply.

mineral, nutrients, and oxygen water organisms and energy

14) What classification do most humans have?

omnivores

15) Most humans are considered ___________ because they eat both plants and animals.

omnivores

17) What are some marine ecosystems? Select all that apply.

open ocean coral reefs coastal wetlands

16) What are some freshwater ecosystems? Select all that apply.

ponds rivers lakes

12) Carnivores that only eat herbivores are called _ consumers, while carnivores that eat other carnivores are called __ , or third level consumers.

secondary tertiary

5) An example of a consumer can be ____. Select all that apply.

snails clams

10) What is a habitat?

the environment in which an organism lives