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Science 9.2 > Bio Diversity > Flashcards

Bio Diversity Flashcards

1
Q

Define Species

A

A group of living things that exchange genes through breeding

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2
Q

Define Natural Selection

A

Animals having adapt to their environment.

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3
Q

Define Interdependence

A

two animals needing each other to survive

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4
Q

Define Niche

A

It describes a role of an organism

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5
Q

Define Asexual Reproduction

A

Using only one parent, they are identical to the parent , mitosis

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6
Q

Define Sexual Reproduction

A

Uses two parents, meiosis, half the genes come from the female and the other half come from the male.

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7
Q

Define Artificial Selection

A

picking and choosing desirable genes

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8
Q

Define Extinction

A

The species are dead everywhere

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9
Q

Define Extirpation

A

The species have died in one particular place

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10
Q

What is the difference between population and community

A

Population is one species
community is multiple species

all living in the same area

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11
Q

What is genetic diversity

A

different inherited traits in a species

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12
Q

3 levels of biological diversity

A

genetics, species, ecosystem diversity

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13
Q

give an example of interdependence

A

Humans and plants
Living species that need water

All species and oxygen

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14
Q

What is the niche of a wolf

A

wolves eat rabbits, grizzly bears eat wolves, habit - Rockies

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15
Q

Define parasitism

A

when there is harm on the other organism. Example: leeches, ticks, tapeworms

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16
Q

Why is a niche that a species occupies important to their survival

A

Because the food and competitors may be different

17
Q

One major threat to Biodiversity

A

Climate Change

18
Q

Define ecosystem diversity

A

different species of a population create a community

19
Q

Difference of sperm cells vs egg cells

A

Sperm cells are the male gametes

Egg cells are the female gametes

20
Q

Similarities of sperm cells vs egg cells

A

They are both gametes

21
Q

What is a zygote and how formed

A

The first cell of a new individual

Created by the joining of the the two gametes

22
Q

Difference of heritable and non-heritable characteristics

A

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

23
Q

What is discrete & continuous variation

examples of each

A

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

24
Q

Describe gametes to embryo

A

gametes, fertilization, zygote forms, cell division (cleavage), cell division continues, cells turn to embryo

25
Q

Label parts of a the flower (pdf file)

A

Ovary, Sepal, Petal, Stamen, Pistil

26
Q

asexual reproduction of yeast cells and how it works

A

budding, the parent produces a small bud or similar version of itself

27
Q

difference between asexual & sexual reproduction

A

one parent & offspring is identical to parent

2 parents & half their genes from each parent

28
Q

what is meant by the term genetic code

A

by arranging the 4 chemicals “letters” into instructions

29
Q

explain relationship among DNA, genes & chromosomes

A

all DNA are genes

DNA is an unravelled chromosomes

30
Q

explain why sex cells need to contain only 1/2 DNA of body cells

A

The female contains half and male contains half so a cell can contain a full set after fertilization

31
Q

see picture #24

A

cell division
sexual reprod
mammals , plants

32
Q

how does binary fission differ from meiosis

A

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

33
Q

differences between extinction & extirpation

A

extinction- the certain species don’t anymore

extirpation - the species no longer exist in 1 space

34
Q

environmental factors in increased rate of extinction

A 
Volcanic eruption,
flooding
fires
lack of food 
diseases
35
Q

technology in livestock industry such as artificial insemination have on genetic variation of domesticated animals

A

picking & choosing specific traits

less diversification

36
Q

4 ways that human activity affects plant & animal species

A

habitat destruction
over hunting
introduction of non native species
Climate Change

Science 9.2 (1 decks)

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