5.6 Flashcards
Chemosynthetic
Describes organisms that produce organic material using energy released from chemical reactions rather than light
Food chains
A diagram the shows how the energy stored in one organism is passed to another
Food webs
A diagram with lots of different types of food chains to show that animals eat more than one type of food
Trophic level
a level within a food chain, food web or food pyramid
First-order consumer
An organism that is within the second trophic level of a food chain also known as a primary consumer
Second-order consumer
An organism that is within the third trophic level of a food chain also known as a secondary consumer
Energy pyramid
a representation of the level of food energy at each level within a food chain
Pyramid of numbers
A representation of the population of a particular organism
Pyramid of biomass
A representation of the dry mass of organisms at each level within a food chain
Birth rate
The number of organisms that are born within a particular period of time
Death rate
The number of organisms that die within a particular period of time
Immigration
The number of individuals moving to a particular area
Emigration
The number of individuals leaving a particular area
Exponential growth
a rapid increase in number or size, represented by a J shaped graph
Sigmoid
the shape of a graph that shows a population increasing in number then reaching a plateau
