Biosphere Flashcards
What is individual?
A single organism belongs to a particular species that live in the environment
Population
A group of organisms that belong to the same species and lives in a specific geographical location at a specific time
Community
A group of different populations interacting with each other in a particular location
What are the three parts of Biosphere?
- Lithosphere
- Hydrosphere
- Atmosphere
what is lithosphere?
The crust and upper mantle of earth
what is hydrosphere
the part containing all the water bodies
what is atmosphere
the part containing air in earth.
what is population density?
the number of organisms of a species, living in a unit area of a selected habitat
what are the four factors affecting population density
Immigration
emigration
deaths
births
name the food chain
producer > primary consumer > secondary consumer > tertiary consumer > quaternary consumer
what is trophic level
grouping animals according to their mode of nutrition
what are the three modes of nutrion
- autotrophs
- heterotrophs
- decomposers
what are autrotrophs
the organisms that transform inorganic compounds in to simple organic compounds to fulfill their requirements
what are the two types of autotrophs
photo-autotrophs
chemo-autotrophs
green plants - photo
bacteria - chemo
