(i) Non-biodegradable biological in origin. wastes are (ii) Biodegradable wastes are degraded by microorganisms such as bacteria and fungi. (iii) Biodegradable wastes enter the food chain and get biologically magnified. (iv)Non-biodegradable absorbed by plants from the soil. wastes are

DDT is a non-bio degradable pesticide and when sprayed, it finds its way to soil from where it enters the food chain, the concentration of DDT increases progressively as we go up the trophic level due to biological magnification.

Leucoplast is a colourless plastid which stores proteins, lipids and starch, while xanthophyll are yellow, read or Orange pigments of green plants.

The spontaneous movement of a substance from a region of high concentration to a region where its concentration is low is done by the process of diffusion.