Nhận biết (M1)

Barn owls and falcons see in three dimensions (3D) by combining two images in their brains, one from each eye. This produces a sense of depth, helping the animals judge how close or far away an object is. Researchers have investigated 3D vision in praying mantises as well. In one study, Vivek Nityananda and his team fitted mantises' faces with two different color filters, one covering each eye, much like the filters in 3D glasses once worn at movies. By observing the mantises' reaction to projected images, the team confirmed that mantises do indeed have 3D vision, but it's unlike that of other animals.

According to the text, what did Nityananda's team find about praying mantises?

• A.

  Praying mantises, barn owls, and falcons can judge visual distance about equally.

• B.

  Praying mantises aren't capable of seeing the same colors that barn owls and falcons can see.

• C.

  Praying mantises can see in three dimensions, but in a different way than other animals do.

• D.

  Praying mantises may detect 3D images in laboratory settings but not in the wild.