The video discusses Quetzalcoatlas, a large pterosaur, and compares its flight mechanism to that of birds. While birds use their legs to take off, carrying heavy leg muscles as dead weight, pterosaurs likely took off using their forelimbs, similar to vampire bats. This method allowed them to use the same muscles for takeoff and flight, making them lighter and enabling them to become the largest flyers in history.

What is the main reason researchers believe Quetzalcoatlus could fly?

• It lived in areas with strong winds.

• Its size was similar to modern birds.

• It had a unique evolutionary path for flight.

• It had feathers like birds.

How do birds typically achieve takeoff?

• By flapping their wings while on the ground.

• By using their legs to jump into the air.

• By gliding from high places.

• By using their beaks to push off the ground.

What is a disadvantage of the bird's flight mechanism?

• They need to rest frequently during flight.

• They carry heavy leg muscles as dead weight.

• Their wings are too small for their body size.

• They cannot fly long distances.

How did pterosaurs take off compared to birds?

• By using their tails to propel themselves.

• By jumping off cliffs.

• By using their four limbs like vampire bats.

• By running fast and flapping their wings.

What advantage did the pterosaur's flight mechanism provide?

• It allowed them to fly without using energy.

• It allowed them to fly faster than birds.

• It made them lighter and more efficient flyers.

• It enabled them to fly in any weather condition.