ECOLOGY/VARIETY OF LIFE Flashcards
What is a Habitat
The place where an organisms live
What is Ecology
The study of the interaction of organisms in an ecosystem with their environment
What is a Enviorment
The biotic and abiotic factors that make up the surroundings
What is a population
Number of organisms of the same species that live in a habitat
What is an ecosystem
The community of organisms together with the habitat
What is a community
Different groups of species living in the same habitat
What equipment do you need when measuring the daisy population
A quadratic, tape measure, calculator and a data table
Data reliable?
Repeat
How will you data be valid and representative?
Random sampling- use random number generator to come up with co-ordinated and use same size quadrat
4 abiotic (non living)
Temperature
Humidity
Drought/rainfall
Light
5 biotic (living)
Competition Predication Food availability Use of pesticide Disease
Food CHAIN
Producer>primary>secondary> tertiary
What do the arrows shows
Flow of energy
Pyramid of biomass
Normal pyramid
Pyramid of number
The number changed the size e.g. oak tree =small level
Equation for respiration
Glucose + oxygen> carbon dioxide + water
Equation for photosynthesis
Carbon dioxide + water> glucose + oxygen
What is decomposition
Breaking down of bio material, decomposed included bacteria + fungible
What is combustion
Burning
What are the 4 main greenhouse gases
Water vapour
Carbon dioxide
Nitrous oxide
Methane
Global warming is….
The consequence
Greenhouse effect is….
The mechanism (method)
5 main impacts on global warming
- Ice cap melting= sea levels rise
- climate change= increase extreme weather
- loss of habitat= carol bleach
- animal migration= disease
- extinction= disruption of food chain
What is Eutrophication
Fertiliser, nitrate, leaching into rivers, algal reproduction, no sunlight, plants die, no oxygen= bacteria using, water anoxic, fish die
Bacteria
- Single celled
- Plasmid is an extra circle of genetic material
- No organelles- no nucleus or vacuole
- obtaining nutritions- some photosynthesis others feed off other organisms
Viruses
- 100 times smaller than a single bacteria cells
- not living can do Mrs gren e.g reproduce
Fungi
- can’t photosynthesis
- can be single celled
- walls made from chitin
- can’t eat food so they have to absorb it
- the secrete digestive enzymes this is called saprophytic
Protoctists
-they are single celled
-some are like plant cells some are like animal cells
Example- Chlorella (green algae) used for medicine