ENERGY FLOW IN ECOSYSTEM

Question 1

most basic definition of energy

Answer 1

“ability to do work”

Question 2

is the source of the majority of energy

Answer 2

sun

Question 3

majority of our energy comes from

Answer 3

fossil fuels, nuclear power and renewable energy sources

Question 4

what does PAR mean?

Answer 4

photosynthetically active radiation

Question 5

plants and organisms use ________ to convert light energy into chemical energy

Answer 5

photosentesis

Question 6

its energy is essential for life in earth, source of biomass, fossil fuels, renewable energies

Answer 6

sun

Question 7

collected through photosynthesis and stored chemical bonds as plants develop

Answer 7

solar energy

Question 8

are just solar energy in a secondary form

Answer 8

fossil fuels

Question 9

how is sunlight absorbed

Answer 9

100% sunlight
• 34% is reflected back by clouds and dust
• 10% is held by ozone layer
• 56% reaches the earth surface
• 2 of 10% is used by plants

Question 10

organisms that use sunlight to generate their own energy

Answer 10

producers

Question 11

terrestial ecosystem major producers

Answer 11

• herbaceous
• woody plants

Question 12

aquatic ecosystems primary producers

Answer 12

• phytoplankton
• algae
• higher plants

Question 13

all animals depend on plants for their food needs, unable to manufacture their own food, eat plants and animals for energy

Answer 13

consumers

Question 14

degrading dead organic matter, organisms that break down dead or decaying species

Answer 14

decomposers

Question 15

energy flow

Answer 15

• enters in as SUNLIGHT
• outs as HEAT

Question 16

the energy used for all plant life processes is derived from ________

Answer 16

solar radiations