3.3

Question 1

Autotroph

Answer 1

an organism that can produce its own food using light, water, carbon dioxide, or other chemicals

Question 2

Heterotroph

Answer 2

An organism derives nutritional requirements from complex organic substances.

Question 3

Herbivore

Answer 3

Primary consumers, plant based diet.

Question 4

Omnivore

Answer 4

Primary and a level higher, both plant and meat consumers.

Question 5

Carnivore

Answer 5

Secondary consumers and higher, diet is meats.

Question 6

Detritivore

Answer 6

Animals which feed on dead organic materials.

Question 7

Keystone species

Answer 7

Influential species
exert important regulatory effects on other species
Increase diversity in habitats

Question 8

Trophic cascade

Answer 8

The environmental affects when removing the apex predator.

Question 9

Describe differences between food web and trophic cascade diagrams

Answer 9

A food web has the primary consumers and shows the sequence in which prey is consumed. A trophic cascade is removing the predator the the scenario and seeing the environmental affects.

Question 10

Identifying trophic levels of organisms in a food web

Question 11

Dashed Arrow

Answer 11

Indirect Effects

Question 12

Solid Arrow

Answer 12

Direct Effects

Question 13

Plus Sign

Answer 13

Positive effects

Question 14

Minus Sign

Answer 14

Negative effects