All birds descended from dinosaurs.

True

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False

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Solution

The correct option is A True
Birds descended from a group of two-legged dinosaurs known as theropods, whose members included the towering Tyrannosaurus rex and the smaller velociraptors.
For example, A velociraptor had a skull like a coyote’s and a brain roughly the size of a pigeon’s.

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Similar questions

Q. Until the late twentieth century, all groups of dinosaurs were believed to be extinct. However, the fossil record indicates that birds are the modern descendants of feathered dinosaurs. They have evolved from theropod ancestors during the Jurassic Period.
Choose the option that best combines the sentences at the underlined point. [Advanced]

Q. One of the following period witnessed the extinction of dinosaurs and primitive birds.

Q. State one characteristic which shows that the birds are very closely related to dinosaurs.

Some dinosaurs had feathers although they could not fly and birds have feathers that help them to fly. In the context of evolution, this means that :
(a) reptiles have evolved from birds
(b) there is no evolutionary connection between reptiles and birds
(c) feathers are homologous structures in both the organisms
(d) birds have evolved from reptiles

Q. Some dinosaurs had feathers although they could not fly. Birds have feathers that help them to fly. Identify the correct statement based on this information.

Statement 1: Reptiles have evolved from birds

Statement 2: There is no evolutionary connection between reptiles and birds.

Statement 3: Birds have evolved from reptiles

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All birds descended from dinosaurs.

The correct option is A TrueBirds descended from a group of two-legged dinosaurs known as theropods, whose members included the towering Tyrannosaurus rex and the smaller velociraptors. For example, A velociraptor had a skull like a coyote’s and a brain roughly the size of a pigeon’s.

The correct option is A True
Birds descended from a group of two-legged dinosaurs known as theropods, whose members included the towering Tyrannosaurus rex and the smaller velociraptors.
For example, A velociraptor had a skull like a coyote’s and a brain roughly the size of a pigeon’s.