Answer the question from the given figure:
Identify the biome with mean annual precipitation between 50 - 250 cm and mean annual temperature between -1 to 14°C
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → E
Read the figure: mean annual precipitation 50–250 cm with mean annual temperature −1 to 14 °C is the area of biome E, the coniferous forest.
Option (1) D — Incorrect. D lies at high temperature (20–25 °C) and high rainfall; it is tropical forest.
Option (2) E — Correct. In the figure each biome is placed by its mean annual temperature and rainfall. Biome E lies in the band of 50-250 cm rain and about −1 to 14 °C, the conditions of a temperate forest.
Option (3) C — Incorrect. C lies at 10–25 °C with 100–220 cm; it is temperate forest.
Option (4) B — Incorrect. B has low rainfall (about 50–100 cm); it is grassland.
Note: This question is from the topic “Organism and Its Environment” in Chapter 13, Organisms and Populations, of the pre-rationalised NCERT book. This portion is not in the present NCERT book, where the chapter is now Chapter 11, Organisms and Populations. The extract below is from the pre-rationalised edition.
NCERT Extract (Pre-rationalised edition, Chapter 13, Organisms and Populations):
Organism and Its Environment – “… Ecology at the organismic level is essentially physiological ecology which tries to understand how different organisms are adapted to their environments in terms of not only survival but also reproduction. You may have learnt in earlier classes how the rotation of our planet around the Sun and the tilt of its axis cause annual variations in the intensity and duration of temperature, resulting in distinct seasons. These variations together with annual variation in precipitation (remember precipitation includes both rain and snow) account for the formation of major biomes such as desert, rain forest and tundra (Figure 13.1).”
