Ecology 9 U1

Question 1

Photosynthesis def

Answer 1

The process that plants go through to generate their energy

Question 2

Photosynthesis eq

Answer 2

water+co2 -light energy-> oxygen+glucose

Question 3

Cellular resp def

Answer 3

The process that uses glucose to make energy

Question 4

Cellular resp eq

Answer 4

glucose+oxygen –> water+co2+energy

Question 4

Cellular resp eq

Answer 4

glucose+oxygen –> water+co2+energy

Question 5

4 spheres

Answer 5

Atmosphere, hydrosphere, lithosphere, biosphere

Question 6

Atmosphere exp

Answer 6

Layer of gas surrounding earth; keeps earth’s temperature to a livable degree and blocks UV; 70% nitrogen and a bit of oxygen and water vapour

Question 7

Lithosphere exp

Answer 7

The outer solid layer of earth; earth’s solid surface (eg. mountains, ocean floors); allows plants to grow and provides habitat

Question 8

Hydrosphere exp

Answer 8

the water on earth; oceans, lakes, clouds, rain, mist, etc. ; provides drinking water, plants to grow, habitat

Question 9

Biosphere exp

Answer 9

the part of earth where life can exist within the 3 other spheres

Question 10

Trophic Levels

Answer 10

1st trophic= producers
2nd= primary consumers
3rd= secondary consumers
4th= tertiary consumers

Question 11

Autotrophs

Answer 11

uses photosynthesis; producer

Question 12

Heterotrophs

Answer 12

relies on autotrophs for energy; consumers

Question 13

Food chains

Answer 13

linear rep of feeding levels; does not exist in nature

Question 14

how much of energy is passed on in food chains

Answer 14

10%

Question 15

how is the energy wasted in food chains

Answer 15

90%; heat, energy to function

Question 16

keystone species exp

Answer 16

most important species; ecosystem cannot survive w/out it

Question 17

Sustainability

Answer 17

The ability to maintain ecosystem balance

Question 18

Biodiversity

Answer 18

The variety of species found in an area

Question 19

3 levels of biodiversity

Answer 19

ecosystem, species, genetic biodiversity

Question 20

Organization of Life

Answer 20

Organism → Population/species → Community → Ecosystem → Biome → Biosphere

Question 21

Similarities of photo and cell resp

Answer 21

• They involve the same chemicals
• They involve energy
• The reactions are opposite of each other

Question 22

Energy Flow

Answer 22

how energy from the sun is transferred to organisms allowing them to thirve

Question 23

Ultimate source of energy

Answer 23

Sun