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1)Mention the mode of nutrition in paramodeium, which is a unicellular organism.
Answer =Paramecium follows holozoic nutrition . Paramecium feed on microorganisms like bacteria, algae, and yeasts. The paramecium uses its cilia to sweep the food along with some water into the cell mouth after it fats into the oral groove. The food goes through the cell mouth
into the gullet.
2)which blood vessels have valves' ? write down their function.
Answer = Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
Explanation:
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