𝗲𝗻𝗲𝗿𝗴𝘆 𝗮𝗻𝗱 𝗲𝗰𝗼𝘀𝘆𝘀𝘁𝗲𝗺𝘀

Question 1

primary producers

Answer 1

organisms that produce glucose via photosynthesis.

Question 2

What is chemosynthesis?

Answer 2

process where bacteria produce glucose from chemicals.

Question 3

biotic factors->

Answer 3

living components of an ecosystem, like organisms.

Question 4

abiotic factors->

Answer 4

non-living components e.g. temperature + rainfall.

Question 5

What is gross primary production?

Answer 5

total chemical energy produced by primary producers.

Question 6

What is net primary production?

Answer 6

Energy remaining after plants use some for respiration.

Question 7

Primary consumers

Answer 7

organisms that feed on primary producers.

Question 8

Secondary consumers.

Answer 8

organisms that feed on primary consumers.

Question 9

Tertiary consumers.

Answer 9

organisms that feed on secondary consumers.

Question 10

Biomass

Answer 10

Mass of living material in an organism.

Question 11

Respiratory substrate.

Answer 11

Molecule used in respiration for energy release.

Question 12

Starch.

Answer 12

Complex carbohydrate for short-term energy storage.

Question 13

Cellulose.

Answer 13

Structural component of plant cell walls.

Question 14

Lipids.

Answer 14

Long-term energy storage molecules in plants.

Question 15

Dry mass.

Answer 15

Mass of an organism after removing water

Question 16

Carbon mass.

Answer 16

Mass of carbon in an organism, typically 50% dry mass.

Question 17

Calorimetry.

Answer 17

Method to estimate chemical energy in biomass.

Question 18

Ecosystem.

Answer 18

Community of living organisms and their environment.

Question 19

Energy transfer.

Answer 19

Movement of energy through tropic levels.

Question 20

Producers.

Answer 20

Photosynthetic organisms that manufacture organic substances.

Question 21

How do you work out Net Primary Production (NPP)?

Answer 21

Gross Primary Production - Respiration.

Question 22

How do decomposers break down dead plant and animal material?

Answer 22

-they secrete digestive enzymes onto the surface of the dead organism
-these enzymes break down the dead matter into small soluble food molecules
-these molecules are then absorbed by the decomposers

Question 23

Productivity

Answer 23

Rate of energy production over time.