The transport system of animals — task. Science CBSE, Class 7.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Choose the correct answers:

Which of the following are known as the components of blood?

red blood cells
blood plasma
kidneys
ureters

Which of the following are characteristics of veins.

wider in size
narrow in size
thin walls
thick walls

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