NATURAL SELECTION VS SELECTIVE BREEDING

Over time, the food supply for birds on an isolated island has changed. The supply of insects, small tender seeds, and vegetation has shrunk. The supply of tough, large, hard seeds has remained unchanged. Over several generations, changes in genetic traits of birds' beaks have occurred. Which beak is most likely to improve the survival rate of the birds?

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS4-4

The diagram below shows variations of Galápagos Island finches that formed over many generations.

What most likely caused the variations in these finches?

• The number of mates on the islands

• The available water on the islands

• The available food sources on the islands

• The temperatures on the islands

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS4-4

The diagram below shows that many generations of genetic changes led to the modern-day giraffe.

Based on the diagram, it is plausible that the giraffe formed —

• longer legs to attack predators that approach.

• more spots to attract mates to produce offspring.

• a longer neck to reach food in higher areas when food was scarce.

• a narrower head to reach deep into trees and eat food that is hard to reach.

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

A population of birds walks along the shores of a swampy area eating small crabs, the water level increases. Which genetic variation in the bird's body will help it survive in the area?

• Longer legs for wading

• A thicker coat of feathers.

• Shorter, stronger beaks.

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NGSS.MS-LS4-4

Which internal structure is an adaptation that provided organisms with the function to breath on land?

• Hollow bones

• Lungs

• Heart

Mudskippers are a species or type of fish which, have developed adaptations that allow them to survive outside of the water. What climate change most likely led to these adaptations?

• Increase rain

• Frequent droughts

• Larger predators

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NGSS.MS-LS1-5

NGSS.MS-LS4-4

What is the function (job) of fish gills?

• To absorb water from the water

• To make the fish faster

• To make the fish lighter

• To absorb oxygen from the water

What adaptation most likely helps birds fly?

• A strong beak

• Small feet

• Hollow bones

• The color of the bird

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NGSS.MS-LS4-2

Define Adaptation.

• How an organism has NOT changed and continues to live in an environment

• All animals can live in any environment

• Special features or behaviors that allow an animal to survive in an environment.

• How an organism grows over time

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NGSS.MS-LS4-4

This stick insect is using ________________ to blend in to it's environment.

• air

• terra

• camouflage

• synthesis

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NGSS.MS-LS4-4