Biology Flashcards
What is the definition of a species?
A species is a group of living organisms that are able to interbreed and produce fertile offspring
What is the definition of an ecosystem?
An ecosystem consists of all the organisms living in a particular habitat and the non-living components with which the organisms interact
What is the definition of a habitat?
The place where an organism lives
What is a population?
All of the organisms of the same type living in the same place
What is a community?
A group of organisms of different species living in the same place and interacting
What is a niche?
The role an organism plays in
What is inTERspecific competition?
InTERspecific competition is when individuals of DIFFERENT species require one or few of the same resources
What is InTRAspecific competition?
InTRAspecific competition is when individuals of the SAME species fight for one or few of the same resources
What are BIOTIC FACTORS
Living factors such as disease, grazing and prey
What are ABIOTIC factors
Non living factors like light, temperature and pH
What is an indicator species?
Indicator species are species that by their presence or absence indicate environment quality or levels of pollution.
What is photosynthesis?
Photosynthesis is a series of enzyme controlled reactions which allow green plants to make glucose using light energy
What is the chemical equation for photosynthesis?
CO2 + H2O —> C6 H12 O6 + O2
What are raw materials for photosynthesis?
Carbon dioxide and water.
What are Essential elements for photosynthesis?
Light energy and chlorophyll
What are photosynthesis products?
Glucose and oxygen
What is the first and second stage of photosynthesis?
FIRST STAGE: Light Reactions
SECOND STAGE: Carbon Fixation
What are photosynthesis limiting factors?
Temperature
Light intensity
CO2 concentration
What and a plant do with glucose?
It can convert glucose into starch for storage of energy and it can be converted into cellulose for immediate energy.
What is the first thing of a food chain?
Producers, they trap light energy from the sun and maintain life on earth
What is a decomposer?
An organism that decomposes organic material.
What does each arrow in the food chain represent?
Each arrow in the food chain represents the direction of energy flow.