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biology: paper 1:

biology paper 1: general:

QuestionAnswer
1. what is a population? organisms of one species in a habitat
2. what is a community? organisms of all species in a habitat
3. how do you use a quadrat to estimate the number of things in an area? randomly place the quadrats method of randomly placing quadrats count and calculate mean per quadrat multiply to give estimate for total field area
4. what is an ecosystem? system in which all organisms interact with the environment and abiotic and biotic factors
5. acronym for 8 classification groups? DKPCOFGS
6. what is the binomial name? universal name including genus and species
7. what is phylogenetic classification? arranging organisms in groups based on their evolutionary origins and relationships
8. what is hierarchical classification? smaller groups within groups without overlapping
9. how do you calculate index of diversity? N(N-1) / (total n(n-1)
10. what is N? total number of organisms of all species
11. what is n? total number of organisms of each species
12. what is interspecific variation? differences between individuals of different species
13. what is intraspecific variation? difference between individuals of the same species
14. how do you calculate the mitotic index? (no. cells with visible chromosomes) / (total no. cells in sample)
15. when observing the chromosomes in the microscope what knob do you use? coarse adjustment knob
16. what does the coarse adjustment knob do? focus image so clear
Created by: chachink
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