Back to AI Flashcard MakerBiology /A-level Biology - Biotic and Abiotic Factors
Define Habitat
Place where an organism lives
Tap or swipe ↕ to flip
Swipe ←→Navigate
1/20
Key Terms
Term
Definition
Define Habitat
Place where an organism lives
Define Population
All the organisms of one species in a habitat
Define Community
All populations of different species in a habitat = community
Define Ecosystem
A community + all abiotic & biotic factors in the area
Define Abiotic conditions
Non-living features of ecosystem e.g. temperature, availability of water
Define Biotic conditions
Living features of ecosystem e.g. predators, food
Related Flashcard Decks
Study Tips
- Press F to enter focus mode for distraction-free studying
- Review cards regularly to improve retention
- Try to recall the answer before flipping the card
- Share this deck with friends to study together
| Term | Definition |
|---|---|
Define Habitat | Place where an organism lives |
Define Population | All the organisms of one species in a habitat |
Define Community | All populations of different species in a habitat = community |
Define Ecosystem | A community + all abiotic & biotic factors in the area |
Define Abiotic conditions | Non-living features of ecosystem e.g. temperature, availability of water |
Define Biotic conditions | Living features of ecosystem e.g. predators, food |
Define Niche | Role of a species within its habitat e.g. what it eats, where and when it feeds |
Define Adaptation | Feature that member of a species have that increases their chance of survival and reproduction |
The niche of a species occupies within its habitat includes… | Its biotic interactions e.g. the organisms it eats, and those it’s eaten by Its abiotic interactions e.g. oxygen an organism breathes in & CO2 it breathes out |
If 2 species try to occupy same niche, there’ll be ______ | competition (One species will be more successful & it’ll be one its own) |
Organisms are adapted to both ____ conditions (e.g. water availability) and _____ conditions (e.g. predators) in their ecosystem | Organisms are adapted to both abiotic conditions (e.g. water availability) and biotic conditions (e.g. predators) in their ecosystem |
What is meant by carrying capacity? | Maximum stable population size of a species that an ecosystem can support |
What does population size vary due to? (2x) | Abiotic Factors Biotic Factors |
Name 3 examples of abiotic factors | light, water, space available, temperature, chemical composition of surroundings, pH, etc. |
Explain how when a mammal’s surroundings is the ideal temperature (e.g. abiotic factor), it can lead variations in population size | e.g. when temperature of a mammal’s surroundings is the ideal temp. for metabolic reactions to take place = don’t have to use up as much energy maintaining their body temperature ∴ more energy can be used for growth and reproduction & population size will increase |
Name 3 biotic factors that affect population size | Intraspecific Competition Interspecific Competition Predation |
What is interspecific competition? | When organisms of different species compete for same resources |
Explain how interspecific competition can cause a change in population size | Results in reducing the resources available to both populations e.g. if share same food source = less available for both of them Both populations limited by lower amount of food Less energy for growth and reproduction ∴ populations sizes lower for both species |
What happens when 2 species are competing but one is better adapted to surroundings? | Less adapted species = out-competed (won’t exist with other species) |
Define Intraspecific Competition | When organisms of the same species compete for same resources |