Question

A population of hummingbirds is composed of individuals with short or long beaks, which they use to reach nectar inside flowers. A flowering trumpet vine that produces many deep, bell-shaped flowers is introduced to the region, resulting in fewer short-beaked and more long-beaked hummingbirds. Which of the following conditions most likely caused this shift in the hummingbird population?

Answer 1

a. Hummingbird predators avoided areas where the trumpet vine grew.
b. Hummingbirds starved because the trumpet vine limited the food supply.
c. Hummingbirds that compete for nectar were more successful with long beaks.
d. Hummingbirds with short beaks overproduced offspring with longer beaks.

Answer 2

c

Answer 3

do you have idea of natural selection?

Answer 4

no not really

Answer 5

survival of the fittest,

Answer 6

so see in that prospective.

Answer 7

ok

Answer 8

so b?

Answer 9

am i right?

Answer 10

natural selection is about competition between organisms which share common niche

Answer 11

d?

Answer 12

it is C.

Answer 13

really is that right?

Answer 14

ya c it is

Answer 15

oh ok thanks guys!

Answer 16

do u get it how? that is what is more important.

Answer 17

yea, from the beginning i thought so, but I thought it was wrong...