Why is p2+1 is always an even number

Most prime numbers are odd. If p is odd, p2 is also odd, and then p2 + 1 is even. Because p > 1, p2 + 1 > 2, and an even number greater than 2 cannot be prime. So p has to be even, then p = 2 (and p2 + 1 = 5 is also prime).

Step-by-step explanation:

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plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.