B4 Flashcards
(20 cards)
What is a habitat?
The area in which an organism lives
What is a producer?
Organisms that make their own food through the process of photosynthesis
What is a consumer?
Organisms that eat other organisms to gain energy
What is a population?
The number of organisms of one species present in an area
What is an ecosystem?
The living organisms and physical conditions present in an area
Where would you find the producer in a pyramid of biomass?
At the bottom usually
Where would you find the secondary consumer in a pyramid of biomass?
Second one above the bottom
LOOK AT THE CARBON CYCLE AND LEARN ITTTTT. YOU NEED TO KNOW IT. GO LEARN IT!!!!!!!!!!
LOOK AT THE CARBON CYCLE AND LEARN ITTTTT. YOU NEED TO KNOW IT. GO LEARN IT!!!!!!!!!!
What is a biotic factor? Give examples.
Living factors. For example the number of predators or the range of food sources.
What is an abiotic factor? Give examples.
A non-living factor. For example the light intensity or the pH of the soil.
How does the temperature of a habitat affect the organisms living there?
Temperature affects enzymes which control metabolic reactions. Plants develop more rapidly in warmer temperatures (as their metabolism will be faster). Same with cold blooded animals.
What is a decomposer?
An organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
Three factors that affect the rate of decomposition.
Temperature, water and oxygen
How does temperature affect decomposition?
The higher the temperature the greater the rate of decay, as enzyme controlled reactions occur faster.
How does water affect decomposition?
If not enough water is available, reactions within the microorganisms will slow down or be prevented.
How does oxygen affect decomposition?
Anaerobic conditions will prevent most forms of decomposition, as microorganisms cannot survive in this
environment.
What is a mutualistic relationship?
A mutualistic relationship is when two organisms of different species benefit from the relationship.
What is a parasetic relationship?
A parasitic relationship is one in which one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death.
What is the role of bacteria in the nitrogen cycle?
They combine nitrogen from the air with oxygen to form nitrates.
What is the efficiency of biomass transfer equation?
(biomass available after the transfer (g or kg) / biomass available before the transfer (g or kg)) * 100
