The Forests

Total Questions: 27

21. Dalbergia species is associated with which one of the following? [I.A.S. (Pre) 2007]

(a) Cashew nut
(b) Coffee
(c) Tea
(d) Rosewood

Correct Answer: (d) Rosewood

Solution:Dalbergia species is a large group which has 100-600 species. Dalbergia is a large genus of small to medium-size trees, these trees are mainly found in North and South America, Africa, Madagascar and Tropical region of South Asia. Some important species of Dalbergia are Sheesham (Rosewood), Kingwood, tulipwood, money bush etc. The smell of sesame or Rosewood is like rose, so it is called Rosewood.

22. Which of the following leaf modifications occur(s) in the desert areas to inhibit water loss? [I.A.S. (Pre) 2018]

1. Hard and waxy leaves

2. Tiny leaves

3. Thorns instead of leaves

Select the correct answer using the code given below:

(a) 2 and 3 only
(b) 2 only
(c) 3 only
(d) 1, 2 and 3

Correct Answer: (d) 1, 2 and 3

Solution:Desert vegetation has the ability to tolerate high temperature and dry weather. Such vegetation is called erophyte vegetation. Here, the plants growing to take several measures to adjust towards the hot and dry climate. The roots of the desert plant are long so that they can penetrate more deeply and get moisture. The bark of the stem is thick Leaves are either absent or if they are small and waxy and thick, with small spines on them with closed pores to prevent evapotranspiration. Hence, option (d) is the correct answer.

23. Match List-I with List-II and select the correct answer using the code given below the lists: [U.P.P.C.S. (Pre) 2019]

List-I (Vegetation Type)	List-II (Region)
A. Maquis	1. California
B. Fynbos	2. Mediterranean Sea Coastal Region
C. Chaparral	3. South Africa
D. Matorral	4. Chile

Code:

	A	B	C	D
(a)	2	3	1	4
(b)	4	3	2	1
(c)	3	4	1	2
(d)	4	2	3	1

Correct Answer: (a)

Solution:The correct match of List-I with List-II is as follows:

Vegetation Type	Region
Maquis	Mediterranean Sea Coastal Region
Fynbos	South Africa
Chaparral	California
Matorral	Chile

24. Match List-I with List-II and select the correct answer using the code given below the lists: [U.P.P.C.S. (Pre) 2019]

List-I (Natural Vegetation)	List-II (Region)
A. Epiphytes	1. Mediterranean
B. Acacia	2. Equatorial
C. Baobab	3. Sahara
D. Cedars	4. Savanna

Code:

	A	B	C	D
(a)	2	3	4	1
(b)	2	3	1	4
(c)	2	4	3	1
(d)	2	4	1	3

Correct Answer: (a)

Solution:The correct match of List-I with List-II is as follows:

Natural Vegetation	Region
Epiphytes	Equatorial
Acacia	Sahara
Baobab	Savanna
Cedars	Mediterranean

The correct answer is option (a).

25. "Leaf litter decomposes faster than in any other biome oftand as a result the soil sus ace is often almost bare. Apart from trees, the vegetation is largely composed of plant forms that reach up into the canopy vicariously, by climbing the trees or growing as epiphytes, rooted on the upper branches of trees." This is the most likely description of [I.A.S. (Pre) 2021]

(a) coniferious forest
(b) dry deciduous forest
(c) mangrove forest
(d) tropical rain forest

Correct Answer: (d) tropical rain forest

Solution:Due to the high temperature and more rainfall in the tropical region throughout the year, there is a diversity of trees in the forest of this area. here epiphytes are also found, and the fallen leaves rapidly rot and decompose.

26. Consider the following trees : [I.A.S. (Pre) 2023]

1. Jackfruit (Artocarpus heterophyllus)

2. Mahua (Madhuca indica)

3. Teak (Tectona grandis)

How many of the above are deciduous trees?

(a) Only one
(b) Only two
(c) All three
(d) None

Correct Answer: (b) Only two

Solution:

Native to India and Malaysia, Jackfruit tree is an evergreen tree and approx. 25 m tall. This trees produce latex and spreads to Sri Lanka, China, South-East Asia and to tropical regions of Africa.

Significantly, Mahua is a tropical deciduous fast-growing tree and spreads to Chhattisgarh, Jharkhand, Madhya Pradesh, Odisha, Maharashtra etc. It is worth mentioning that Teak is a tropical hardwood tree. It is deciduous in nature.

27. A geographic area with an altitude of 400m has following characteristics: [I.A.S. (Pre) 2010]

Months	J	F	M	A	M	J	J	A	S	O	N	D
Average maximum temp. °C	31	31	31	31	30	30	29	28	29	29	30	31
Average minimum temp. °C	21	21	21	21	21	21	20	20	20	20	20	20
Rainfall (mm)	51	85	188	158	139	121	134	168	185	221	198	86

(a) Moist temperature Coniferous forest
(b) Mountain Subtropical forest
(c) Temperate forest
(d) Tropical rain forest

Correct Answer: (d) Tropical rain forest

Solution:The annual data of temperature and rain shows that the above features belong to the tropical rain forest.

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