Lesson 1: Intro To Ecology
What is the difference between a biotic and abiotic factor?
Biotic is living and abiotic is nonliving
How do producers obtain energy for survival?
They use energy from sunlight to make their own food.
Name two factors in the population equation that would cause a decrease
Emigration and Death
Define symbiosis
A close long term relationship between different species in a community
True or False:
A Niche is an organism's home
False
A bee making honey is an example of a ...
Niche
Herbivores, carnivores, and omnivores are all examples of......
Consumers
During the 1930s, a large region of the Great Plains experienced a drought that turned grasslands into dust. How did this change most likely affect populations of insects living among the grasslands?
They decreased because the resources they needed were not available.
Bees have a society in which different members have different responsibilities. The interaction among bees is an example of what type of behavior?
Cooperation
What is the top of the food chain called?
Tertiary Consumer / Apex Predator
Define biome
Large regions characterized by climate and precipitation
How much and what type of energy is lost to the environment as you move from trophic level to trophic level?
HINT: HEAT OR MECHANICAL?
10% Heat
A scientist is studying a population of elephants contained in an animal preserve. Which of the following must be true if the size of the population is DECREASING?
The birth rate is less than the death rate.
Name and describe the three types of symbiotic relationships.
1. Mutualism: Both benefit
2. Commensalism: One benefits, the other is unaffected
3. Parasitism: One benefits, the other is harmed.
Name 3 limiting factors
Food, Water, Shelter
What is the difference between a population and a community?
A population is a group of individual species living in the same area at the same time, a community is made up of all populations living in the same area at the same time
Name the order of energy flow from the sun to secondary consumer.
Sun-Producer-Primary Consumer- Secondary Consumer
Define carrying capacity and limiting factors AND explain how they work together.
Carrying capacity: Max # of individuals an environment can support
Limiting Factor: part of environment that keeps population size below full potential
Limiting factors keep the population from reaching carrying capacity.
Remoras are small fish that attach to sharks but do not harm them. When sharks tear prey apart, remoras eat the leftovers. What type of symbiotic relationship is this?
Commensalism
How much energy is moved up each trophic level in an energy pyramid
10%
Write the levels of ecological organization from simple to most complex
Species
Population
Community
Ecosystem
Biome
Biosphere
Using the energy rule, how much energy would the apex predator receive if it was a tertiary consumer?
HINT: I WANT A PERCENT
0.1%
Write the equation for how to determine population growth
(Immigration + Births) - (Emigration + Deaths)
= Population Size
Describe how predator prey populations are connected.
HINT: POPULATION GRAPH
As prey population increase, predator population decreases.
As predator population increases, prey population decreases.
What is the difference between a habitat and niche?
Niche is an organism role in an ecosystem, habitat is where an organism lives.