Question

Our World: Then and Now
Exercises
swer the following questions orally.
What is meant by biosphere?
What is natural vegetation?
What is meant by the growing season of a plant?
What is a terrestrial biome? Give two examples.
What kind of trees are characteristic of the taiga biome?
What is meant by wildlife?
The use of which drug on animals killed many vultures in India?
Name any two biosphere reserves of India.
words.​

Answer 1

Answer:

1. The part of the Earth system comprising all ecosystems and living organisms, in the atmosphere, on land (terrestrial biosphere) or in the oceans (marine biosphere), including derived dead organic matter, such as litter, soil organic matter and oceanic detritus.
2. Natural vegetation refers to a plant community, which has grown naturally without human aid and has been left undisturbed by humans for a long time. ... Thus, cultivated cropsand fruits, orchards form part of vegetation but not natural vegetation.
3. A growing season is the period of the year when crops and other plants grow successfully. The length of a growing season varies from place to place. Most crops need a growing season of at least 90 days. In tropical regions, where it is warm year-round, the growing season can last the entire year.
4. Regions of similar climate and dominant plant types are called biomes. This chapter describes some of the major terrestrial biomes in the world; tropical forests, savannas, deserts, temperate grasslands, temperate deciduous forests, Mediterranean scrub, coniferous forests, and tundra
5. The Taiga biome is mostly made up of Coniferous trees. The main such trees found in the biome are evergreen spruce, deciduous larch, fir and pine trees.
6. Wildlife traditionally refers to undomesticated animal species, but has come to include all organisms that grow or live wild in an area without being introduced by humans. ... Deserts, forests, rainforests, plains, grasslands, and other areas, including the most developed urban areas, all have distinct forms of wildlife.
7. A veterinary pain killer drug, nimesulide, has been causing the death of vultures in India, finds a new study published in the latest edition of the international scientific journal, Environmental Science and Pollution Research.
8. Cold Desert, Himachal Pradesh.
9. Nanda Devi, Uttrakhand.
10. Khangchendzonga, Sikkim.