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Population/Community
| Question | Answer |
|---|---|
| What is an organism? | A living thing |
| Name some biotic factors. | grass, predators, prey |
| Name some abiotic factors. | sunlight, water, temperature, rocks |
| What do populations make? | communities |
| What happens to the population size if the birth rate increases? | increases |
| What happens to the population size if the emigration rate decreases? | increase (less species are leaving) |
| What is the main way a population size grows? | birth |
| What is it called when an organism kills and eats another organism? | predation |
| What is the organism that kills and eats another? | predator |
| What is the organism that is killed and eaten? | prey |
| What is the long term interaction between two species in which at least one benefits? | symbiosis |
| What type of symbiosis in when both benefit? | mutualism |
| What type of symbiosis is when one benefits and the other is neither helped nor harmed? | commensalism |
| What type of symbiosis is when one benefits and the other is harmed? | parasitism |
| What is the place where an organism lives and that provides the things the organism needs? | habitat |
| What is the smallest unit of ecological organization called? | organism |
| What are gray wolves in a forest an example of? | a population |
| What is counting the number of organisms in a small area and multiplying to estimate the number in a larger area called? | sampling |
| What is it called when organisms leave an area? | emigration |
| What is an approximation of a number, based on reasonable assumptions called? | estimate |
| What is the largest population that an environment can support called? | carrying capacity |
| What is an organism's particular role in its habitat? | niche |
| What are behaviors and physical characteristics of species that allow them to live successfully in their environment called? | adaptations |
| What is the struggle between organisms to survive in a habitat with limited resources? | competition |
| Name some limiting factors. | food, space, weather conditions |
| What is the study of how things interact with each other and their environment? | ecology |
| What is population density? | the number of individuals of a population in a specific area |
| A hawk building its nest on an arm of a saguaro cactus is an example of...? | commensalism |
| The series of changes that occurs after a disturbance in an existing ecosystem is ...? | secondary succesion |
| The first species to populate an area where primary succession is taking place are called...? | pioneer species |
| Observing animals tracks is an example of what type of observation used to estimate population size? | indirect |
| Ticks feed on the blood of mice in a symbiotic relationship called...? | parasitism |
| A flea is a parasite that lives on a __________ such as a dog. | host |
| A small bird enters the mouth of a crocodile to clean the crocodile's teeth. The bird is not eaten. This is an example of what type of symbiosis? | mutualism - both benefit |
| A pilot fish swims near a shark and eats some of the scraps of food left by the shark. The shark does not eat the pilot fish. Other fish are afraid of the shark and do not eat the pilot fish. This is an example of what type of symbiosis? | commensalism |
| The hermit crab is a notoriously messy eater, and the worm that lives in its shell feeds on scraps of food left from the crab. The crab is not harmed, and really doesn't care that the worm is there. This is an example of what type of symbiosis? | commensalism |
Created by:
RMSScience7
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