Biosphere reserves differ from National parks and Wildlife sanctuaries because in the former
human beings are not allowed to enter
people are an integral part of the system
plants are paid greater attention than the animals
living organisms are brought from all over the world and preserved for posterity
The state of Gujarat has river, desert, forest and lake ecosystems, thus exihibiting a diversity of life. Which measure do you use to denote total diversity in such a case?
In this soil conservation method, several grasses are left out in soil after the crop is harvested.
If the Bengal tiger becomes extinct
Match the column$-I$ with column$-II$
Column$-I$ | Column$-II$ |
$(a)$. Artemesia annua | $(i)$ Henna |
$(b)$. Lawsonia inermis | $(ii)$ Anticancer drug |
$(c)$. Vinca rosea | $(iii)$ Kattha |
$(d)$. Acacia catechu | $(iv)$ Antimalarial drug |
Total number of all species of organisms in a given region is known as the region's