Which essential nutrient makes up 70% of an animal’s body? A. Carbohydrates B. Minerals C. Protein D. Water II. A plant that does not have chlorophyll and gets its food from dead matter is called? A. Epiphytes B. Saprophytes C. Symbionts D. Parasitic plant III. Which of the following respiratory systems is not closely associated with a bloodsupply? A. The lungs of the vertebrate B. The tracheal system of an insect C. The gills of a fish D. The skin of an earthworm
Essential nutrients
These are the organic compounds present in the food that provide nourishment essential for the development and growth of our body. Nutrients not only provide us with the required energy to carry out various biological processes but are also the building blocks for repair and growth in our bodies.
Vitamins
The vitamins are organic molecules required in low concentration for the proper functioning of the body. They cannot be generated in the organism and are taken into the body through the diet. The lack of proper vitamins results in diverse deficiency disorders. They are thus called essential nutrients. The important vitamins are vitamin A, vitamin B complex, vitamin C, vitamin D, vitamin K, and vitamin E.
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