ECOLOGY
ENERGY FLOW AND PRIMARY PRODUCTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the deer’s main predator has been eliminated
|
|
|
competition increased
|
|
|
decreased water levels of local ponds
|
|
|
organisms that rely on similar food sources migrated to the area
|
Detailed explanation-1: -What were some of the biotic limiting factors in the deer’s ecosystem? Food, hunters, bears, wolves, mates, biting flies, disease (if not viral), shelter (if trees and brush), snakes, and bears. Students may have additional responses that are correct as long as they are LIVING things.
Detailed explanation-2: -3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.
Detailed explanation-3: -All food chains start with energy from the sun. This energy is captured by plants. Thus the living part of a food chain always starts with plant life and ends with an animal. Plants are called producers because they are able to use light energy from the sun to produce food (sugar) from carbon dioxide and water.
Detailed explanation-4: -Which is least likely to occur from the overpopulation of deer? The grass population in the deer’s habitat will begin to decrease.