Review Questions

Question 1 Relationship between members of the same or different species in which individuals are adversely affected by those having the same living requirements, such as food or space

competition

Question 2 symbiosis that is beneficial to both organisms involved.

Mutualism

Question 3 A symbiotic relationship in which one organism benefits and the other is generally harmed

Parasitism

Question 4 a relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter

Commensalism

Question 5 A relationship where one organism hunts (predator) and eats the other animal (prey)

Predator/Prey

Question 6 Barnacles create home sites by attaching themselves to whales. As the barnacle is a filter feeder, it also gets access to more water (and more food) due to the relationship. Whale is unaffected.

Commensalism

Question 7 A cuckoo lays its eggs in the nest of the warbler. The cuckoo’s eggs hatch first and the young kick the warbler eggs out of the nest. The warbler raises the cuckoo babies and the warbler babies aren’t hatched

Parasitism

Question 8 Remoras attach themselves to a shark’s body. They travel with the shark and feed on the leftover food scraps after the shark has finished its meal. The shark is unaffected as it’s done eating anyway.

Commensalism

Question 9 Ostriches and gazelles feed next to each other. They both watch for predators. Because the visual abilities of the two species are different, they can each identify threats that the other animal may not see as readily. Both species benefit.

Mutualism

Question 10 Hermit crabs will move into an old abandoned shell when their shell is no longer big enough to contain them. As the shell is inanimate (not living) it is not affected by this relationship.

commensalism

Question 11 Ants offer protection for the aphids who (have no protective features of their own) would otherwise would be food for all sorts of organisms. The aphids “repay” the ants by providing honeydew (a liquid they secrete) for the ants to use as food.

mutualism

Question 12 Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds. Both benefit.

Mutualism

Question 13 What is the source of all energy

sun

Question 14 Name a producer

Corn, plant, lavender, mangos

Question 15 Identify a primary consumer

Grasshopper, butterfly, fruit fly

Question 17 Identify a secondary consumer

Rat, frog, dragonfly, thrush

Question 19 Identify a tertiary consumer

Python, eagle, wolf

Question 21 How much energy is lost as you move up each trophic level in an energy pyramid?

90%

Question 22 Where does the energy go?

It is used up and transferred into heat

Question 23 If producers have 5,000 kj of energy how much does the secondary consumer get?

50kj

Question 24 If producers have 5,000 kj of energy how much does the primary consumer get?

500kj

Question 25 If producers have 5,000 kj of energy how much does the tertiary consumer get?

5kj

Question 26 If producers have 5,000 kj of energy, where does the energy come from?

The sun