Biology - classification and biodiversity Flashcards
What are the two different types of plants?
-Flowering like daisy, rose, dandelion
-Non-flowering like mosses, trees and ferns
What are the two different types of animals?
-Vertebrates - have a backbone, like birds, snakes, humans
-Invertebrates - do not have a backbone. like insects, spiders
What are morphological adaptions? Give an example.
-A structural change which gives an animal a greater chance of survival in its habitat.
-Fennec foxes who live in hot climates have large ears to radiate heat away from their bodies.
What are behavioural adaptions? Give an example.
-Behavioural adaptation is the way an organism reacts to its environment which aids its survival.
-The Fennec fox is mostly nocturnal(awake at night) and burrows under the sand to avoid the heat of the day in the desert.
What do animals compete for?
What do plants compete for?
Animals compete for:
-food, territory and mates.
Plants compete for:
-light, water and minerals.
What are interspecific and intraspecific competitions?
-Interspecific competition is competition between different species.
-Intraspecific competition is competition between members of the same species.
How is a size of a population changed?
Competition, predation, pollution or disease
What is biodiversity and why is it important?
Biodiversity is a measure of:
-the variety of different species
-the numbers of each of those species in a particular area.
It is important as it provides:
-food and potential foods
-industrial materials
-new medicines
-and enhances human well-being
How can biodiversity and endangered species be conserved and protected?
-Convention on International Trade in Endangered Species
-Sites of Special Scientific Interest
-captive breeding programmes
-national parks
-seed/ sperm banks
-local biodiversity action plans.
Why is it important to take a random sample?
It is important to take a random sample of an area to avoid collecting biased data.
A larger sample will give a valid estimate of the number of plants in the area
How do you use a quadrat?
- Randomly throw a quadrat.
- Count the different species and the number of each in each quadrat.
- Take a mean number of each species of plants from all the quadrats collected.
- Multiply up to estimate how many in the whole area.
What is the order of the binomial system?
Kingdom
Phylum
Class
Order
Family
Genus
Species
King Prawn Curry Or Fat Greasy Sausages
Why are Latin scientific names used for animals?
Scientific names are used as they are universal. Language barriers or the use of common names for organisms could be confusing. The use of these names from the binomial system by all scientists avoids any confusion.
How can you measure the biodiversity of oraganisms?
Capture/recapture method
1. Carefully collect organisms found in 1 area without trampling habitat or leaving litter.
2. Mark the organisms and return them to the same area they were collected from.
3. Leave time for organisms to reintegrate into their community.
4. Return and again collect as many organisms as found, collect as those already marked and unmarked samples.
5. Use an equation to calculate the estimated population size.
What is biological control?
Biological control - The use of one organism to control the population size of another species by eating it. Typically using an alien species.
