1.0 PAT review Flashcards
What is the difference between Abiotic and Biotic?
Abiotic are non-living things
biotic are living
What is the difference between Population and Community?
Populations are groups of individuals of the same species living in an area
Communities are groups of populations of different species living in the same area.
How do we classify living organisms?
King, Philip, Came, Out, For, Good, Soup
Kingdom, Phylum, Class, Order, Family, Genus, Species.
How do we know if organisms are closely related?
They belong to many of the same lower categories (genus).
I.e. They may be different species but if they belong to the same genus they are closely related (Canis familiaris and Canis lupus).
What is resource partitioning? Give an example.
Division of a resource among two or more coexisting species such that the niche of each species differs slightly. Example: birds eating from different parts of a tree.
What is a niche? Give an example.
The role of an organism or species in an ecosystem, including where it lives, what it eats, how it reproduces, and how it interacts with other living and non-living things.
Any reasonable example
Describe parasitism, commensalism and mutualism.
Parasitism: One benefits the other is harmed
Commensalism: One benefits the other is neither helped nor harmed
Mutualism: Both benefit
How can a predator keep its prey population healthy?
Eliminates the sick and old, so only the healthy can reproduce and pass along their genes.
What is natural selection?
A process in which the environment “selects” which individuals will survive and reproduce.
How can variation within a species help it survive? Give an example.
Without variety one disease, environmental condition or predator could pick off the whole population – so with variation it is more likely the ones with an advantage will survive.
What is the difference betwee Heritable & non-heritable characteristics? Give examples
Characteristics that are passed from generation to generation (eye color); ones that are not (swimming ability)
What is the difference betwee Discrete and Continuous Variations? Give examples.
Heritable characteristic that has an either/or form (being albino or not); heritable characteristic that falls within a range (height, shoe size).
What is the difference betwee Sexual and Asexual Reproduction? Give examples
Reproduction involving the exchange of genetic material between two individuals resulting in offspring that are genetically different from the parents (mammals); Reproduction without the fusion of sex cells, resulting in identical offspring and parent (bacteria, yeast)
Describe what happens in animals after the egg and sperm cell unite?
(Hint: use words like embryo, zygote, cleavage, etc.)
The cell created by the joining of the two gametes is known as the zygote; the zygote then divides repeatedly, called cleavage. The new multicellular life form is called an embry
Explain what parts in a plant are involved in cross-pollination?
The pollen from the stamen (which is made up of the filament and anther) is transferred to the pistil (firstly to the stigma, but then through a pollen tube it travels down the style to the ovary that contains the ovules.
