Evolution Of Species

Question 1

What are Homologous structures?

Answer 1

Similar structure, different function and come from an ancestor

Question 2

What are Analogous structures?

Answer 2

Different species with Different structures but similar functions

Question 3

What is Evolution change

Answer 3

The change of genes in a population overtime

Question 4

What does natural selection act on?

Answer 4

It acts on variation, it does not create it

Question 5

What does natural selection result in the species?

Answer 5

Becoming better adapted to their environment

Question 6

Natural selection can do what?

Answer 6

Cause mutation over a period of time that can lead to a new species

Question 7

Evolution change means?

Answer 7

The change of genes in a population overtime

Question 8

Are mutations always helpful?

Answer 8

They usually are helpful because they help us adapt to our environment

Question 9

Where do mutations come from?

Answer 9

Radiation, Chemicals

Question 10

Adaptation is the ability to?

Answer 10

Change and adapt to changed in their environment

Question 11

What are the limiting factors

Answer 11

Food
Water
Shelter

Question 12

Stimuli

Answer 12

Anything that causes a response

Question 13

Autotrophs

Answer 13

Organisms that can make their own nutrients

Question 14

Heterotrophs

Answer 14

Organisms that cannot make their own nutrients

Question 15

Symbiosis

Answer 15

Any type of interaction between two different species

Question 16

Mutilim

Answer 16

When 2 organisms benefit each other

Question 17

Parasitiom

Answer 17

One benefits and the other one gets harmed (ex, ticks )

Question 18

Commensalism

Answer 18

Between organisms that don’t harm the other ( sharks and remora fish)

Question 19

Saprophytic (decomposers)

Answer 19

Feed on the dead and decaying matter

Question 20

Taxonomy

Answer 20

Science of identity and classifying all organisms

Question 21

Phylogeny

Answer 21

The study of the evolutionary relationships between and among species

Question 22

Prokaryote

Answer 22

Organisms that have no nuclear or any other membrane

DNA is found in cytoplasm

Question 23

Eukaryote

Answer 23

A cell that has a nucleus that includes the DNA inside, they are more complex them prokaryotic cells

Question 24

Reproductive isolation

Answer 24

Something that prevents 2 populations from interbreeding when they live in the same region

Question 25

Geographic isolation

Answer 25

When populations are separated by geographic barriers

Question 26

Temporal isolation

Answer 26

Two populations reproduce at different times

Question 27

Speciation

Answer 27

Is a process. Can happen because of natural selection from a heritable traits overtime

Question 28

What are the 3 domains of life and what are there characteristics

Answer 28

Bacteria: single celled, prokaryotic, vital in cycling nutrients, gets energy by photosynthesis and reproduce asexually Archaea: single celled, prokaryotic, live in soils, oceans, human colon and extreme environments like salty,acidic or high temperatures they also reproduce asexually by splitting Eukarya: are organisms that contain that a nucleus, protists, animals, plants and fungi

Question 29

What are the the things under Eukarya and explain there characteristics

Answer 29

Protists: unicellular, eukaryotic organisms they get energy form dunglihby and can reproduire sexually or asexually examples are Omeaba, algae etc Plants:multicellular,eukaryotic, get energy from photosynthesis which accours in the chloroplast. the cell walls are made out of cellulous, can reproduce sexually or asexually examples of plants flowering plants etc Fungi: multicellular, Eukaryotic, cell wall made of chitin, essential in decomposition, often form symbiotic relations with other organisms, asexual or sexual reproduction, important in wine making examples can be mushrooms, mold or yeast Animalia: multicellular, hetrophic, Asexual or sexual reproduction,contain protons collagen, invertebrates for 97% of species Examples are worms, jellyfish birds,insects amphibians etc