2 No More Energyyg Ssj (un) Flashcards
What is a producer
Organism that produces its own food through photosynthesis
What is primary consumer
Organism that eats other organism
Herbivore/omnivore
What is secondary consumer
Omnivore/carnivore that eats primary consumer
What is tertiary comsumer
Secondary consumer that eats secondary consumer
Usually bigger
What are decomposers
Organism that breaks down dead animals and plants into materials / nutrients
Through saprophytism
What is food chain
Show the feeding relationship between organisms
What is food web
Interconnections of a few food chains
Why is energy lost in food web
Used to move & carry life processes - respiration
Heat energy & chemical energy - undigested food = faeces
What is nutrient cycle
Nutrients are obtained from a balanced ecosystem
Nutrients are returned to the environment
What is role of plants and animals in increasing water content in atmosphere
Plants - across water through roots -> released through transpiration
Animals - respiration, defecation & excretion (sweating&urination)
What is role of plant in preventing soil erosion
Hold soil tightly, makes soil structure compact
Slows down flow of water
What is role of plants to prevent soil from becoming dry
Leaves cover surface & reduce rate of evaporation
What is a habitat
Natural surroundings or home of organism
What is a species
Group of organisms that have common characteristics and can reproduce to breed offspring
What is a population
Group of organisms of same species that live in same habitat
What is community
Few populations of different organisms that live together in one habitat & have mutual interaction
What is ecosystem
Few communities that live together in one habitat and have mutual interaction
Including all non living components - soil water air
When is ecosystem balanced
Living & nonliving components are in state of harmony without external interference
What does symbiosis mean
Two or more organisms of different species live closely & interact with one another
State mutuality of clown fish and sea annemone
Sea anemone - protects clown fish from predators, supplies food
Clown fish - cleans sea anemone & provide nutrients - waste
State mutuality of lichen
Fungi - suplly water and minerals
Algae - photosynthesis - supply food
State mutuality of mynaj and buffalo
Mynah- gets food by eating lice that sticks on body
Bufallo - free from lice
State commensalism of remora fish and shark
Remora fish (commensal) latches on shark (host) and gets its food from scraps
State commensalism of birds nest fern and trees
Birds nest fern (commensal) grow in between branches of tree (host) to get sunlight
