TED-Ed: How did feathers evolve? - Carl Zimmer

Feathers, one of nature's most complex structures, evolved over millions of years. Initially, dinosaurs had simple, wire-like feathers that gradually became more intricate. Fossil evidence shows that many dinosaurs had feathers, supporting the idea that birds are living dinosaurs. Feathers served various functions, such as camouflage and display, long before they enabled flight. The evolution of flight likely began with small feathered dinosaurs using their arms for extra lift, eventually leading to the development of wings.

What is the relationship between birds and dinosaurs according to the video?

• Birds have no relation to dinosaurs.

• Birds evolved from reptiles.

• Birds are living dinosaurs.

• Birds are descendants of mammals.

What significant discovery in the late 1990s supported the idea that birds are related to dinosaurs?

• Dinosaurs with preserved skin.

• Dinosaurs with preserved feathers.

• Dinosaurs with preserved bones.

• Dinosaurs with preserved scales.

How did the structure of feathers evolve over time according to the video?

• Feathers started as scales and became more rigid.

• Feathers began as wires and developed branches.

• Feathers evolved from leaves.

• Feathers were always complex and colorful.

Which of the following is NOT a function of feathers mentioned in the video?

• Camouflage

• Attracting mates

• Providing warmth

• Producing sound

What theory is proposed about how feathered dinosaurs might have started to fly?

• They used their tails to propel themselves.

• They flapped their arms while running up inclines.

• They were lifted by strong winds.

• They jumped from trees and glided.