c. Active transport is opposite of diffusion. Why? d. Micro-nutrients are also known as trace elements. Why? e.Some fruits such as apple and pear are false fruit. Why?
Answers
Answer:
c. Diffusion is the movement of ions, molecules or atoms from a region of higher concentration to lower concentration i.e. along the concentration gradient. Diffusion doesn't require any energy. On the other hand active transport is an energy based process which allows the movement of substances against concentration gradient. In this way we can say that active transport and diffusion are opposite of each other.
d. Mico-nutrients are known as trace elements because they are required in very less proportion by a livinf being. They are necessary but the quantity required is relatively less as compared to other nutrients.
e. True fruits are those fruits which are completely formed by the ovary of a flower. Apple and pear are not true fruits because they are formed by the other floral parts of flower e.g. apple if formed by the thalamus of flower