Read the following statements regarding the animal Psittacula: (A) It is a homoiothermous animal. (B) Its digestive tract has additional chambers, the crop and gizzard. (C) Its heart is three-chambered. (D) Its long bones are hollow with air cavities. (E) It is a viviparous animal with internal fertilisation. How many of the above statements are correct?

Step-by-step solution

Psittacula is the scientific name for the parrot, which belongs to the class Aves. Statement (A) is correct: Birds are homoiothermous (warm-blooded) animals. Statement (B) is correct: The digestive tract of birds has additional chambers, the crop and gizzard. Statement (C) is incorrect: Birds have a completely four-chambered heart, not three-chambered. Statement (D) is correct: The endoskeleton is fully ossified and the long bones are hollow with air cavities (pneumatic). Statement (E) is incorrect: Although fertil