Question

1) If you examined predator-prey relationships within an ecosystem and noticed that the removal of predators also resulted in the die-off of herbivores, what would you suspect occurred?

a) Removal of predators would directly lower the number of herbivores.

b) The lack of predators could mean that too much primary production occurred.

c) Herbivores from another region may have entered the ecosystem and consumed the primary producers, causing death of the original herbivores species.

d) Overeating by herbivores could have caused depletion of the primary producers, leaving the herbivores without enough food.

2) The loss of an apex consumer would impact which trophic level of a food web?

a) Primary producers

b) Primary consumers

c) Secondary consumers

d) All of the above

3) Energy is a fundamental component in an ecosystem and is contributed by the primary producers. Describe how light energy can, in turn, support the consumers of an ecosystem.

a) Light energy is converted by primary producers and primary consumers. Consumers belonging to higher trophic levels feed on them to gain energy.

b) Primary producers can only obtain energy from sunlight by photosynthesis and gain energy by feeding on them or other consumers which have consumed these producers.

c) Primary producers convert light energy by photosynthesis and consumers gain energy by feeding on them or other consumers which have consumed these producers.

d) Primary producers convert light energy through chemosynthesis and consumers gain energy by feeding on them or other consumers which have consumed these producers.

Answer 1

1) if predators are removed the primary consumers increase in number rapidly since there is no control on their growth rate so these herbivores consume more ofthe primary producers ( plants ) leading to depletion of the food recouce for them so the herbivores cannot survive due to lack of food so the answer is

d) Overeating by herbivores could have caused depletion of the primary producers, leaving the herbivores without enough food.

2) when consumer at the apex is removed then the number of organisms in the level below it increases ( because apaex consumer eats the organisms in the level below it, when apex consumer is removed this leads to increase in the m=number of organisms in the lower level) this leads to decrease in the number of organism in the next lower level, that is alternate levels number of organisms increase and decrease so all trophic levels are affected so the answer is d) all of the above

3) primary producers convert energy of sunlight to chemical energy in the bonds of sugars thriugh photosynthesis then primary consumers consume them then secondary consumers consume them so energy flows so the answer is

c) Primary producers convert light energy by photosynthesis and consumers gain energy by feeding on them or other consumers which have consumed these producers.