Ecosystems

Question 1

What are the things that animals fight for?

Answer 1

Mates
Water
Territory
Food

Question 2

What is always at the start of the food chain?

Answer 2

Sun

Question 3

What defines a species?

Answer 3

A group of organisms that can interbreed with one another to create fertile offspring

Question 4

What is a food chain?

Answer 4

A series of organisms all dependant on the next as a source of food

Question 5

Name three features of wind pollinated plants

Answer 5

. No Nectar
.no scent
. Small dull flowers
. Large feathery stigma
. Long slender filament 
. Pollen is dry, small, smooth and buoyant

Question 6

What do plants compete for?

Answer 6

Space
Water
Light
Minerals

Question 7

Name three forms of seeds dispersal

Answer 7

Wind dispersal
Water dispersal
Internal animal dispersal
External animal dispersal
Explosive dispersal

Question 8

What is the stamen?

Answer 8

The male sex organ of a plant

Question 9

Which part of a plant creates pollen?

Answer 9

Anther

Question 10

What is the carpel?

Answer 10

Female sex organ of a plant

Question 11

What is a decomposer?

Answer 11

An organism, particularly a fungus or soil bacterium that decomposes organic matter

Question 12

What is a food web?

Answer 12

A series of interlocking and interdependent food chains

Question 13

What is the opposite of respiration?

Answer 13

Photosynthesis

Question 14

What three factors affect photosynthesis?

Answer 14

Light intensity
Carbon dioxide levels
Temperature

Question 15

What is yeast?

Answer 15

A microorganism

Question 16

What are the products of fermentation?

Answer 16

Ethanol
Carbon dioxide
Energy

Question 17

What is phosphorus needed for in plants?

Answer 17

Making roots, roots absorb vital minerals

Question 18

What is the most important mineral for plant growth?

Answer 18

Nitrogen

Question 19

What is the function of stomata?

Answer 19

Allowing gases to diffuse

Question 20

What do guard cells do?

Answer 20

They open and close stomata

Question 21

Where does photosynthesis occur?

Answer 21

In chloroplast, found in leaves 🍁

Question 22

Why are leaves green?

Answer 22

They are green because of a green pigment called chlorophyll

Question 23

What is the word equation for photosynthesis?

Answer 23

Carbon dioxide + water —li-gh-t-e-ne-rg-y—>glucose + oxygen

Question 24

What is the function of chlorophyll?

Answer 24

Chlorophyll traps light from the sun which is needed for photosynthesis

Question 25

What is oxygen debt?

Answer 25

• It is the oxygen needed to remove lactic acid that pays back the oxygen debt
• After exercise the heart rate stays faster than normal so blood can carry lactic acid away to be broken down by the liver

Question 26

How is blood carried through to the cells?

Answer 26

Through tiny tubes called capillaries

Question 27

Where does aerobic respiration take place?

Answer 27

In the mitochondria

Question 28

Where does the glucose come from?

Where does the oxygen come from?

Answer 28

Food

Breathing

Question 29

What kind of reaction is aerobic respiration?

Answer 29

Chemical reaction

Question 30

What is the word equation for aerobic respiration?

Answer 30

Oxygen + glucose ——>carbon dioxide + water (energy)

Question 31

What is the word equation for anaerobic respiration?

Answer 31

Glucose ——> ENERGY + lactic acid

Question 32

Why do plants have cuticles (waxy layers)?

Answer 32

To reduce evaporation, keeps water

Question 33

What do xylem tubes transport?

Answer 33

Water

Question 34

What do phloem tubes transport?

Answer 34

Glucose