Becks of Finches

Which two species of finch would be affected if a bird with a grasping beak that ate ants and beetles was introduced into their habitat?

• large ground finch and warbler

• woodpecker finch and small ground finch

• large tree finch and small tree finch

• cactus finch and medium ground finch

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

Which finch eats all animal food and has a probing bill?

• Warbler Finch

• Small Ground Finch

• Small Tree Finch

• Vegetarian Finch

Tags

NGSS.MS-LS2-1

Which finch eats mainly plant food and has a probing bill?

• Cactus Finch

• Small Ground Finch

• Large Tree Finch

• Sharp Billed Ground Finch

Tags

NGSS.MS-LS4-2

Select the 2 finches that would most likely compete for the same food.

• Small Tree Finch

• Large Tree Finch

• Cactus Finch

• Medium Ground Finch

Tags

NGSS.MS-LS2-1

Which finch or finches eats mainly animal food and has a probing bill?

• Woodpecker finch

• Cactus Finch

• Sharp billed ground finch

• Medium Ground finch

Tags

NGSS.MS-LS4-2

How many finches eat mainly plant food and have crushing bills?

• 1

• 3

• 2

• 5

Tags

NGSS.MS-LS4-4

NGSS.MS-LS2-1

How many finches eat mainly animal food and have grasping bills?

• 1

• 2

• 3

• 4

Genetic evidence supports which of the following explanations for the presence of 13 different finch species on the Galapagos Islands?

• Each of the 13 species was founded by the independent migration of a different species from the mainland to the islands.

• Many years ago, more than 13 different species of birds migrated to the islands. The current 13 finch species are the only species that survived.

• It's not clear based on the DNA evidence whether the 13 species arose from a single migration of one species or multiple migrations of several species from the mainland to the islands.

• Many years ago, a small population of a single finch species migrated to the islands and evolved into the current 13 species.

Answer explanation

The Galápagos finch DNA reveals that the finch species are more related to each other than to any species on the mainland.

Tags

NGSS.MS-LS4-4

NGSS.MS-LS4-2

The film defines species as populations whose members don't interbreed. What keeps different Galápagos finch species from mating? Select all that apply.

• Individuals only recognize and respond to songs of their own species.

• One population eats mostly small, soft seeds and the other population eats mostly large, hard seeds.

• Geographic isolation and different environments led to changes in traits that affected mating.

Answer explanation

In general, female finches only recognize and respond to males that sing their species’ song. They will ignore singing males of other species. Also, the Grants and their team gathered evidence to show that finches choose mates on the basis of certain traits that differ among species. These differences arose as geographically isolated populations changed over time in different ways (i.e., without mixing their genes).

Tags

NGSS.MS-LS4-4

NGSS.MS-LS1-4

According to this graph,

• Finches with larger beaks survived the drought of 1977.

• Finches with medium beak depth eat only seeds of medium size.

• Finches with smaller beak depth prefer smaller seeds.

• Finches with large beak depth eat only seeds of large size.

Tags

NGSS.MS-LS4-4

NGSS.MS-LS2-4