Question

Fill in the blanks

___ is a flightless bird.

Answer 1

Aves:

1. These are flying vertebrates.
2. They are warm blooded animals, which means that their body temperature does not change with the change of temperature in the outside environment.
3. Their body is covered with feathers.
4. They have a streamlined spindle or boat shaped body.
5. The body is differentiated into the head, neck, trunk, and tail.
6. They can rotate their neck at 180 degree.
7. They have two pairs of limbs.
8. The forelimbs are modified into wings for flight.
9. The hindlimbs are modified for walking, swimming, perching, or food capturing.
10. They do not have teeth in their jaws.
11. A horny beak is used to capture the food.
12. Their bones are hollow, light, and spongy.
13. They have a four chambered heart.
14. Respiratory organs are lungs.
15. These are oviparous animals and lay eggs with hard calcareous shell.
16. Example - Pigeon (Columbia), Crow (Corvus)

Final answer: Ostrich is a flightless bird.