Fill in the blanks:
1. Arteries carry ........................ blood and veins carry ........................ blood.
2. ........................ is the excretory organ present in earthworms.
3. Kidney is made up of tiny structures called ........................ .
4. The liquid part of the blood is called ........................ .
5. ........................ is a process of giving blood to a needy person.

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Solution

1. Arteries carry oxygenated blood and veins carry de-oxygenated blood.
2. Nephridia is the excretory organ present in earthworms.
3. Kidney is made up of tiny structures called nephrons.
4. The liquid part of the blood is called plasma.
5. Transfusion is a process of giving blood to a needy person.

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