WorksheetsBiology (so far)
Total questions: 20
Worksheet time: 12mins
Which of the following is NOT an ecological pyramid
Pyramid of numbers
Pyramid of biomass
Pyramid of energy
Pyramid of land
A food chain always begins with
(a)
Which level in the pyramid has the most energy?
1 because they are autotrophs
1 because they are carnivores
4 because they are autotrophs
4 because they are carnivores
What is bioaccumulation or biomagnification?
buildup of toxins in an organism
the total mass/amount of organisms in a given area
the number of different species in an area
When you consume an organism, you only receive 10% of the energy, but how much of the toxins do you receive?
All of the toxins
10% toxins
1% toxins
None of the toxins
What are examples of toxins? (multiple answers)
water
salt
pesticides
insecticides
Coca-Cola
Invasive species alter the ecosystem by _____ in number quickly. This leads to _____ food for the native species.
increasing, less
increasing, more
decreasing, less
decreasing, more
Why do the populations of invasive species grow so quickly?
Invasive Species are native to an area.
Invasive species are prey to many animals.
Invasive species have no predators.
Invasive species keep the ecosystems in equilibrium.
The Mayfly is a food source for which 3 organisms?
What may happen if the snowshoe hare was removed from the food web pictured?
The insects in the habitat would increase because there are less snowshoes hares to eat them.
The Lynx, Fox, and Hawk populations would decrease.
The willow tree population would decrease because they are now more insects to eat them.
Foxes would increase because they are now eating the willow trees.
