Bio Diversity Flashcards
Define Species
A group of living things that exchange genes through breeding
Define Natural Selection
Animals having adapt to their environment.
Define Interdependence
two animals needing each other to survive
Define Niche
It describes a role of an organism
Define Asexual Reproduction
Using only one parent, they are identical to the parent , mitosis
Define Sexual Reproduction
Uses two parents, meiosis, half the genes come from the female and the other half come from the male.
Define Artificial Selection
picking and choosing desirable genes
Define Extinction
The species are dead everywhere
Define Extirpation
The species have died in one particular place
What is the difference between population and community
Population is one species
community is multiple species
all living in the same area
What is genetic diversity
different inherited traits in a species
3 levels of biological diversity
genetics, species, ecosystem diversity
give an example of interdependence
Humans and plants
Living species that need water
All species and oxygen
What is the niche of a wolf
wolves eat rabbits, grizzly bears eat wolves, habit - Rockies
Define parasitism
when there is harm on the other organism. Example: leeches, ticks, tapeworms
Why is a niche that a species occupies important to their survival
Because the food and competitors may be different
One major threat to Biodiversity
Climate Change
Define ecosystem diversity
different species of a population create a community
Difference of sperm cells vs egg cells
Sperm cells are the male gametes
Egg cells are the female gametes
Similarities of sperm cells vs egg cells
They are both gametes
What is a zygote and how formed
The first cell of a new individual
Created by the joining of the the two gametes
Difference of heritable and non-heritable characteristics
Heritable - inherit genes from parents
ex. hair colour, eye colour, and height
Non-Heritable - genes that are not inherited from parents
ex. artistic skills, math skills, and dyed hair colour
What is discrete & continuous variation
examples of each
discrete variation is the differences in characteristics that have defined forms
ex. has blue eyes or does not have blue eyes
continuous variation is the differences in characteristics that have a range of forms
ex. height
Describe gametes to embryo
gametes, fertilization, zygote forms, cell division (cleavage), cell division continues, cells turn to embryo
Label parts of a the flower (pdf file)
Ovary, Sepal, Petal, Stamen, Pistil
asexual reproduction of yeast cells and how it works
budding, the parent produces a small bud or similar version of itself
difference between asexual & sexual reproduction
one parent & offspring is identical to parent
2 parents & half their genes from each parent
what is meant by the term genetic code
by arranging the 4 chemicals “letters” into instructions
explain relationship among DNA, genes & chromosomes
all DNA are genes
DNA is an unravelled chromosomes
explain why sex cells need to contain only 1/2 DNA of body cells
The female contains half and male contains half so a cell can contain a full set after fertilization
see picture #24
cell division
sexual reprod
mammals , plants
how does binary fission differ from meiosis
binary fission- is a form of asexual reproduction
meiosis- type of cell division that produces cells with only 1/2 DNA of a normal cell
differences between extinction & extirpation
extinction- the certain species don’t anymore
extirpation - the species no longer exist in 1 space
environmental factors in increased rate of extinction
Volcanic eruption, flooding fires lack of food diseases
technology in livestock industry such as artificial insemination have on genetic variation of domesticated animals
picking & choosing specific traits
less diversification
4 ways that human activity affects plant & animal species
habitat destruction
over hunting
introduction of non native species
Climate Change
