Biosphere Test

Question 1

Why is the water Cycle so important? And how does the water Cycle work?

Answer 1

All living things need to survive, and water molecules enter the atmosphere as water vapor when they evaporate from the ocean or other bodies of water.

Question 2

If algae is at the beginning of the food chain is is known as the

Answer 2

Producer

Question 3

If you are an ecologist and you are counting the population number of a certain species in a given area, which inquiry method are you using?

Answer 3

Observation

Question 4

A snake that eats a frog that had eaten an insect that fed on a plant is a

Answer 4

Tertiary consumer

Question 5

Define biomass.

Answer 5

Total amount of living tissue within a given tropic level.

Question 6

As only 10% of the energy is stored in organisms is passed on to the next trophic level, some of the remaining energy is used for life’s processes and the rest is what?

Answer 6

Eliminated heat

Question 7

List the processes in the carbon cycle.

Answer 7

Photosynthesis, cellular respiration, and decomposition.

Question 8

Green plants are

Answer 8

Producers

Question 9

Deer are

Answer 9

Primary consumer

Question 10

Nitrogen fixation is carried out primarily by what?

Answer 10

Bacteria

Question 11

Why do organisms need nutrients?

Answer 11

To build tissue and carry out life essential functions.

Question 12

Water can enter the atmosphere through the processes of?

Answer 12

Evaporation and transpiration

Question 13

Living organisms require nitrogen to make __________,which are used to build proteins.

Answer 13

Amino acids

Question 14

What do scientists classify the nitrogen, carbon and water cycles as?

Answer 14

Biogeochemical cycles

Question 15

Plant-eating cows are called ________

Answer 15

Herbivores

Question 16

Th chemical substances that an organisms require to live are called what?

Answer 16

Nutrients

Question 17

What is the process by which bacteria converts nitrogen gas in the air to ammonia?

Answer 17

Nitrogen fixation

Question 18

What is nitrogen fixation carried out primarily by?

Answer 18

Bacteria.

Question 19

The chemical substances that an organisms requires to live are called what?

Answer 19

Nutrients

Question 20

Explain the role of Algae in ocean food chains.

Answer 20

Algae is an autograph and in this particular case it’s going to be the primary producer at the base of the food chain.

Question 21

Describe three basic processes of ecological research and explain them.

Answer 21

Observation: the first step in making an experiment and a model. It asks ecological questions.
Experimenting: can be used to test hypotheses.
Modeling: ecologists make models to gain insight into complex phenomena such as the effects of global warming.

Question 22

What are some of the similarities between the carbon cycle and the nitrogen cycle?

Answer 22

They are both the most abundant in the atmosphere and they both involve plants to transfer the nutrients.

Question 23

Plant-eating cows are called?

Answer 23

Herbivores

Question 24

The chemical substances that an organisms requires do love are called?

Answer 24

Nutrients

Question 25

How might a large input of Phosphorus affect a freshwater lake over time?

Answer 25

Algal bloom happens when a result in an immediate increase in the amount of algae and other producers occur in a body of water.

Question 26

The repeated movement of water between Earth’s surface and the atmosphere is called?

Answer 26

The water Cycle

Question 27

Nitrogen fixation is carried out primarily be?

Answer 27

Bacteria

Question 28

What are the different levels of the biosphere, from smallest to largest?

Answer 28

Individual, population, community, ecosystem, biome, and biosphere.

Question 29

What is meant by nutrient limitation?

Answer 29

When a nutrient is in short supply it will limit an organisms growth. When an ecosystem is limited by a song.d nutrient that is scarce or cycles very slowly, this substance is called limiting nutrient.

Question 30

Why do algal blooms occur?

Answer 30

When there is not enough consumer to eat the excess algae, conditions can become so favorable for growth that algae cover the surface of the water.