Question

A foreign seed is accidentally distributed in a field. After several growing seasons, the plants of the foreign seed are the only type found in the field. This foreign plant is considered which of the following?
Select one:
a. Secondary consumer
b. Invasive species
c. Mutualistic partner
d. Producer

Answer 1

@Andrews_girl You should be able to get this one I think. Just think about the definitions of each word (individually, not as a phrase).

Answer 2

Thankyou ! @mrdoldum Can you help with a couple more ? (:

Answer 3

Wait would it be D ? or am i completely wrong /.\

Answer 4

@Andrews_girl What do we use when one country declares war and sends troops into another country?

Answer 5

B?

Answer 6

Yes.

Answer 7

thankyou !

Answer 8

Without the presence of sea otters, sea urchins would otherwise overgraze kelp beds, dramatically changing the marine community of which the urchins and otters are a part. For this reason, sea otters are considered _____________.
Select one:
a. A parasite
b. A keystone species
c. A predator
d. An indicator species

Answer 9

c or b i think ?

Answer 10

@mrdoldum

Answer 11

@Andrews_girl Have you learned about species that if removed cause the collapse of an entire ecosystem? That is what this question is talking about.

Answer 12

yes so it would be b then ? Without keystone species, the ecosystem would be dramatically different or cease to exist altogether.

Answer 13

Yes

Answer 14

Some caterpillars look like small snakes and will even strike out like a snake when threatened by a predator. This is an example of _______.
Select one:
a. Mutualism
b. Commensalism
c. Deceptive looks
d. Camouflage

Answer 15

D ?

Answer 16

Close, but it is more than simple camouflage.

Answer 17

C ?

Answer 18

Yes

Answer 19

Which of the following represents mutualism?
Select one:
a. Tick on a dog
b. Tapeworm in a human
c. Lion eating a zebra
d. Bees pollinating flowers

Answer 20

The symbioses:

parasitism-one species fitness increased the other species fitness decreased
commensalism-one species fitness increased the other species has not fitness change
mutualism-both species have fitness increased

Answer 21

ah d ?

Answer 22

Yes.

Answer 23

thankyou for your help !