Question

Collect information about importance of ph value in daily life to human beings as well as plants

Answer 1

ph value of our human being is basic in nature it is above 7. plants is also basic in nature because the surrounding or the place where plants grow or a soil is basic in nature so in the soil plants grow so the minerals plants gets are basic in nature so plants are basic in nature

Answer 2

1. pH in our digestive system:

Our stomach produces hydrochloric acid. This dilute hydrochloric acid helps in digesting our food without harming the stomach. Sometime, excess of acid is produced in the stomach for various reasons such as overeating.

2. pH change as the cause of tooth decay:

When we eat food containing sugar, then the bacteria present in our mouth break down the sugar to form acids such as lactic acid.

Thus, acid is formed in the mouth after a sugary food has been eaten. This acid lowers the pH in the mouth making it acidic. Tooth decay starts when the pH of acid formed in the mouth falls below 5.5.

3. Soil pH and plant growth:

Most of the plants grow best when the pH of the soil is close to 7. If the soil is too acidic or too basic the plants grow badly or do not grow at all. The soil may be acidic or basic naturally. The soil pH is also affected by the use of chemical fertilizers in the fields.