Science Quiz-Ch.1 Ecosystems

Question 1

All organisms need?

Answer 1

1.Nutrients- Elements, molecules, gases, water.
2. Habitat or environment- With sustainable nutrients.
3. Energy- For activities, growth, and reproduction. The sun is energy for all ecosystems.

Question 2

What is sustain (sustainability)?

Answer 2

To allow something to continue for a long period of time. Human impact is the greatest threat to sustaining life forms on Earth.

Question 3

What is an ecosystem?

Answer 3

Is all the organisms in an area that interact with each other and with their environment of energy and matter.

Question 4

What is photosynthesis?

Answer 4

Plants ( and some micro-organisms) convert light energy into chemical energy (glucose). The energy is transferred to herbivores that eat the plants, and the carnivores that eat the herbivores.

Question 5

Example of food chain

Answer 5

Grass -> Grasshopper -> Frog -> Hawk
Producer -> Primary consumer -> Secondary consumer -> Tertiary consumer.

Question 6

What is trophic and the two different kinds?

Answer 6

Trophic- Energy
Autotroph- Self producer of energy
Heterotroph- Consumer of energy

Question 7

What is a food chain?

Answer 7

Step-by-step sequence linking organisms that feed on each other.

Question 8

What are producers?

Answer 8

Plants (photosynthesis)

Question 9

What are consumers?

Answer 9

Animals (and others) that feed on plants and on each other.

Question 10

What are herbivores?

Answer 10

Animals that eat plants

Question 11

What are carnivores?

Answer 11

Animals that eat other animals.

Question 12

What are omnivores?

Answer 12

Animals that eat both plants and animals, such as racoons, humans, and bears.

Question 13

What is detritus?

Answer 13

Waste from plants and animals, including their dead remains.

Question 14

What are decomposers?

Answer 14

Organisms that break down detritus to get nutrients for their own use. (Bacteria, fungi)

Question 15

What is a habitat?

Answer 15

Places where a species can live

Question 16

What is ecology?

Answer 16

The study of how organisms interact with each other.

Question 17

What is abiotic?

Answer 17

Non-living factors in the environment.
Ex)Sunlight, atmosphere, H2o, soil.

Question 18

What is biotic?

Answer 18

Any living thing.
Ex)Bacteria, fungi, plants, animals.

Question 19

What is a population?

Answer 19

All the members of the same species living in the same ecosystem or habitat.

Question 20

What is a community?

Answer 20

The collection of all the population of all the species living in the same ecosystem or habitat.

Question 21

What is an ecotone?

Answer 21

The transition zone or boundary between communities.
Ex)Saskatchewan Parkland (Diagram)

Question 22

What is a pyramid used for?

Answer 22

A pyramid is used to represent three things in Biology. This shape is used because the base is wide and I narrows towards the top, showing a decrease.

Question 23

Pyramid of Numbers

Answer 23

The numbers of organisms at each level of the food chain decreases as you go up the food chain.

Question 24

Pyramid of Energy

Answer 24

The amount of energy available at each level of the food chain decreases as you go up the food chain.

Question 25

The 10% Law of Energy Transferred

Answer 25

Only about 10% of food energy is converted to new tissue, and is transferred to the next consumer. The other 90% is burned off and use for daily activities.

Question 26

Pyramid of Biomass

Answer 26

Is the total mass of a population of an organism in an area. The amount of biomass decreases as you go up the food chain.