Biology

HideShow resource information
What is the process of classification?
the process of grouping living things done accordingly to how closely related they are
1 of 25
what are prokaryotes?
microscoped single celled organisms, with no true necleus just a circular molecule of DNA
2 of 25
What are procitsts
Organisms that dont fit with other kingdoms and are usually single celled.
3 of 25
definition of species?
a group off similar organisms that can breed together to produce fertile offspring
4 of 25
Definition of a hybrid?
An organism that is produced by two different species breeding, the offspring is in fertile
5 of 25
what are producers and consumers?
producers produce their own food (prey) and consumers cannot so they eat the producers.
6 of 25
What is excretion and egestion?
egestion= getting rid of waste naturally by pooing and excretion= getting rid of them unnaturally
7 of 25
What does a pyramid of numbers show?
the number of organisms at each stage of a foodchain.
8 of 25
What does a pyramid of biomass show?
the mass of living material at each stage of the food chain
9 of 25
what is the definition of the carbon cycle?
The series of processes by which carbon compounds are converted within the environment and is returned to the atmosphere by repiration
10 of 25
Name a process which returns carbon to the air?
respiration
11 of 25
Name a process that removes carbon from the air?
Photosynthesis
12 of 25
why do scientists want to save endangered species?
prevent damage to food chains
13 of 25
why do dead plants decompose in marshes?
Because there is less oxygen available
14 of 25
What does nitrogen fixing bacteria do?
It takes nitrogen in the air and converts it to get nitrates.
15 of 25
What is an ecological niche?
The specific role of an organism within its environment. eg where it lives, what it does there, what it eats etc
16 of 25
What is a parasite
a parasite feeds of of another organism and harms it.
17 of 25
what is mutualism?
two things that live together and benefit from eachother eg a shark and a fish
18 of 25
what is interdependance?
The mutual dependance of one organism with another
19 of 25
Name the stages of natural selection
There is a genetic variation in a population, competition for food, smaller animal will die.
20 of 25
how do cactuses adapt to warm weather
Spikes- to protect them from any animals trying to eat them and they have spines instead of leaves to minimise the surface area and reduce water loss by transpiration
21 of 25
What was darwins theory?
There is prescence of natural variation, competition for limited resources, survival for the fittest, inheritance of successful adaptions,
22 of 25
How can endangered species be helped?
sponsering animals, protect habitats, legal protection, education programmes, captive breeding programmes,
23 of 25
Reasons to conserve animals
protecting human food supply, ensuring minimal damge to food chain, future identification of plants for medical purposes, cultural aspects
24 of 25
What is sustainable development?
using the Earths resources as a rate at which they can be replaced.
25 of 25

Other cards in this set

Card 2

Front

what are prokaryotes?

Back

microscoped single celled organisms, with no true necleus just a circular molecule of DNA

Card 3

Front

What are procitsts

Back

Preview of the front of card 3

Card 4

Front

definition of species?

Back

Preview of the front of card 4

Card 5

Front

Definition of a hybrid?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Medicine and drugs resources »