Conservation of Biodiversity

Question 1

Ecosystem

Answer 1

A community of organisms that interact with each other and are affected by the abiotic, biotic, climatic, and edaphic factors surrounding them

Question 2

Biotic factors

Answer 2

Living : predation, competition, disease

Question 3

Climatic factors

Answer 3

Weather: rainfall, sunlight , temperature

Question 4

Edaphic factors

Answer 4

Soil: type, moisture, pH

Question 5

Population

Answer 5

All the organisms in an ecosystem that belong to the same species eg all the foxes

Question 6

community

Answer 6

all the different populations together in an ecosystem

Question 7

trophic level

Answer 7

the position an organism occupies in the food chain

Question 8

how do tertiary consumers get their energy

Answer 8

from secondary consumers by eating them

Question 9

how do producers get their energy

Answer 9

from the sun by photosynthesis

Question 10

energy flow in an ecosystem

Answer 10

only about 10% of energy from one trophic level is actually passed onto the next level, the rest is used for growth etc

Question 11

why do plants need nitrogen

Answer 11

to convert starch made during photosynthesis to protein

-nitrogen needs to be in the form of nitrate salts which are made in the nitrogen cycle

Question 12

4 main benefits of ecosystems

Answer 12

food, water, medicine, recreation, spiritual/aesthetic

Question 13

food benefit

Answer 13

-seafood from oceanic ecosystems

Question 14

water benefit

Answer 14

-transpiration in large forests contribute to clouds which release fresh water

Question 15

medicine benefit

Answer 15

morphine from poppy

-aspirin from willow

Question 16

ecological biodiversity

Answer 16

refers to all the different types of ecosystems on earth

Question 17

reason for ecological biodiversity

Answer 17

need for many very different types of ecosystems to accomodate each different organism
-niche help keep ecosystem healthy, by studying and maintaining biodiversity we keep our planet healthy

Question 18

2 types of ecosytems and their subtypes

Answer 18

terrestrial - forest, grassland

aquatic - salt,freshwater

Question 19

forest features

Answer 19

high density of living organisms, easily upset with small changes

Question 20

grassland features

Answer 20

grazing animals

-lots of insects and their predators

Question 21

salt water features

Answer 21

• lots of dissolved minerals

- makes up most of earth’s water

Question 22

fresh water features

Answer 22

• makes up less than 1% of earth water

- home to almost half of all fish species

Question 23

conservation

Answer 23

the wise management of a natural resource to prevent exploitation, destruction or neglect

Question 24

3 examples of conservation

Answer 24

forest management (replanting)

• plans to prevent overharvesting fish
• reduce consumption of resources by reuse, reduce,recycle

Question 25

growing food :how to make it better

Answer 25

• fertilise land wo leaching minerals into waterways
• reuse land
• breed good quality seed

Question 26

transporting food : how to make it better

Answer 26

-in season, local , rely less on imports

Question 27

consumption of food: how to make it better

Answer 27

• smaller, healthier portions

- less waste