Bio-Chapter 3: The Biosphere

Question 1

Algae is important to food webs because it is an

Accepted Answer

Primary Producer

Question 2

Energy that is not consumed is released back into the biosphere as.....

Accepted Answer

Heat

Question 3

The scientific study of interactions between organisms and organisms and their environment

Accepted Answer

Ecology

Question 4

Bacteria that converts nitrogen gas into ammonia is called....

Accepted Answer

Nitrogen fixation

Question 5

Matter is a one-way flow

Accepted Answer

False

Question 6

Which organism is a biotic factor?

Accepted Answer

Plant

Question 7

Earthworms eat detritus particles as a(n)

Accepted Answer

Detritvores

Question 8

The smallest level of organism in an ecosystem is...

Accepted Answer

Individual Organism

Question 9

What "feeds" by chemically breaking down organic matter?

Accepted Answer

Decomposer

Question 10

Ecologist use which method to guide inquiry?

Accepted Answer

All of the above

Question 11

A series of steps in which organisms transfer energy by eating and being eaten.

Accepted Answer

Food Chain

Question 12

Nonliving parts of the environment are biotic

Accepted Answer

False

Question 13

A group of individuals that belong to the same species and live in the same area

Accepted Answer

Population

Question 14

Ecological pyramids show the relative amount of energy or matter contained within each level

Accepted Answer

True

Question 15

Autotrophs use solar or chemical energy to produce "food."

Accepted Answer

True

Question 16

All the nutrient cycles go through the atmosphere

Accepted Answer

False

Question 17

The energy moving up to the next trophic level increases by 10%

Accepted Answer

Flase

Question 18

Which nutrient cycle does not go into the atmosphere?

Accepted Answer

Phosporus

Question 19

Organisms that rely on other organisms for energy and nutrients are called?

Accepted Answer

Heterotrophs, Consumers

Question 20

Nutrients whose supply limits productivity is called the limiting nutrients

Accepted Answer

True

Question 21

The biosphere consists of all life on Earth

Accepted Answer

True

Question 22

Water evaporating from the leaves of plants is called

Accepted Answer

Transpiration

Question 23

Every step in a food chain or web is called the

Accepted Answer

Trophic level

Question 24

Energy flows through an ecosystem in a _______stream from primary producer to various consumers

Accepted Answer

One-way

Question 25

__________are the 1st producers of energy-rich compounds that are later used by other organisms

Accepted Answer

Primary Producers

Question 26

Chemical energy is used to produce carbohydrates

Accepted Answer

Chemosynthesis

Bio-Chapter 3: The Biosphere

Questions 26

Bio-Chapter 3: The Biosphere

Questions 26