Populations, Succession, and Ecosystems

There are 2 types of succession. ​ (a)   succession refers to an area where no life existed. It often begins with​ (b)   or sand (ex. volcanic eruption). ​ (c)   succession occurs where there was once ​ (d)   , seeds, and soil (Ex. forest fire).

• Primary
• rock
• Secondary
• life

A population is a group of the DIFFERENT species in the same area.

Hint: Look at the picture

• True

• False

All are examples BIOTIC (living) limiting factors EXCEPT:

• Food

• Shelter

• Competition

• Predators

Carrying capacity refers to the maximum (most) organisms that there are resources for in an area. Based on the graph, what is the carrying capacity for species 5. Hint: It is where the graph levels.

• 0

• 500

• 1500

• 2000

Place the growth characteristics under the correct category.

Groups:

(a) Exponential

,

(b) Logistic

• Ideal "best" conditions

• Has limited resources

• 
• 
• Ex. Bacteria growth

• rapid growth

• Ex. Human population

Succession is major changes in an ecosystem due to factors like

• forest fire

• human activity

• hurricanes

• all of these

Place the labels in the correct place.

a

b

c

rock

Climax Community or mature forest

Pioneer Species

A ​ (a)   is a simple diagram that shows what eat what.​ The tip of the arrow should point toward the (b)   . A food chain always begins with a ​ (c)   . Many connected food chains form a(n)​ (d)   .

• food chain
• consumer (eater)
• producer (ex. plants)
• food web
• sun
• predators

Place the terms and/or picture under the correct category.

Groups:

(a) Producer

,

(b) Consumer

,

(c) Decomposer

• Eat food

• 
• Bacteria

• Photosynthesis

• Break organisms down

• 
• 
• Heterotroph

• Autotrophs

• Animals

• Make own food

In the food pyramid, the (a)   receive the most energy and the ​ (b)   receives the least energy. According to the ​ (c)   rule, if grass has 2,000 kcal of energy, the rabbit would receive ​ (d)   kcal of energy by eating the grass. Snakes would get​ 20 kcal from eating rabbits, and the hawk would receive ​ (e)   kcal from eating snake.

• Plants
• Hawk
• 10%
• 200
• 2
• 20%