Question

A. Correct the following sentences by replacing the highlighted words: 1. Arteries are the vessels which carry carbon dioxide rich blood from all parts of the body back to the heart. 2. Veins carry oxygen-rich blood from the heart to all parts of the body. 3. Ammonia is the main excretory product of human being. 4. Uric acid is the main excretory product of fishes. 5. Urea is the main excretory product of birds, lizards etc.​

Answer 1

Answer:

1. Veins are the vessels which carry carbon dioxide rich blood from all parts of the body back to the heart.

2. Arteries carry oxygen rich blood from the heart to all parts of the body.

3. Urea is the main excretory product of human being.

4. Ammonia is the main excretory product of fishes.

5. Uric acid is the main excretory product of birds, lizards etc.

Answer 2

Explanation:

first veins are the vessels which carry carbon dioxide rich blood from all parts of the body back to the heart