Q50. Ebony, mahogany and rosewood are associated with which forests?
[SSC CHSL Tier-I (7 Aug 2023, Shift 2)]
(A) Temperate forest
(B) Tropical deciduous forest
(C) Tropical evergreen forest
(D) Alpine forest
Answer: (C) Tropical evergreen forest
Explanation: Ebony, mahogany and rosewood are characteristic trees of tropical evergreen forests. Constant moisture and warmth permit dense, multilayered vegetation. The Western Ghats and northeastern regions contain examples of this forest type.
Q49. Which characteristic of tropical evergreen forests is INCORRECT?
[SSC Selection Post HSC (27 Jun 2023, Shift 3)]
(A) Well-stratified growth
(B) Trees may reach 60 metres
(C) Found in warm, humid areas
(D) Annual rainfall below 150 cm
Answer: (D) Annual rainfall below 150 cm
Explanation: Tropical evergreen forests generally require much greater rainfall than 150 centimetres annually. Their warm, humid environment supports tall trees and several vegetation layers. Low annual rainfall is more consistent with deciduous or dry scrub conditions.
Q48. Consider:
I. Evergreen forests do not have a definite leaf-shedding season.
II. Moist deciduous forests grow mainly in 70–100 cm rainfall.
Which is correct?
[DDA Junior Secretariat Assistant (22 Sep 2023, Shift 4)]
(A) Only II
(B) Both I and II
(C) Only I
(D) Neither I nor II
Answer: (C) Only I
Explanation: Evergreen species shed leaves at different times, so their canopy stays green. Moist deciduous forests commonly receive around 100–200 centimetres of rainfall; 70–100 centimetres is more characteristic of dry deciduous vegetation. Only the first statement holds.
Q47. In the Himalayas, the change in vegetation with altitude is mainly linked to what happens to temperature?
[SSC Stenographer (12 Oct 2023, Shift 3)]
(A) It increases
(B) It decreases
(C) It oscillates randomly
(D) It remains unchanged
Answer: (B) It decreases
Explanation: Temperature generally falls with increasing elevation, altering growing seasons and species distribution. Tropical foothill vegetation gives way to temperate forests, conifers and eventually alpine shrubs and grasslands. Local rainfall and slope exposure also matter.
Q46. Which forest type thrives where rainfall exceeds 200 cm and the dry season is very short?
[KVS PGT Biology (20 Feb 2023, Shift 1)]
(A) Tropical evergreen forests
(B) Mangrove forests
(C) Moist deciduous forests
(D) Dry deciduous forests
Answer: (A) Tropical evergreen forests
Explanation: Tropical evergreen forests grow in very wet, warm conditions with little sustained drought. Their trees form dense, stratified canopies and remain green year-round. Indian examples include parts of the Western Ghats and northeastern hills.
Q45. Which state is associated with tropical thorn forests?
[SSC Selection Post (30 Jun 2023, Shift 1)]
(A) Andaman and Nicobar Islands
(B) West Bengal
(C) Madhya Pradesh
(D) Mizoram
Answer: (C) Madhya Pradesh
Explanation: Parts of Madhya Pradesh have semiarid conditions supporting thorn scrub alongside deciduous forests. Andaman and Nicobar, West Bengal and Mizoram generally have wetter climatic environments that favour different vegetation types.
Q44. Which vegetation covered approximately 4,992 sq km of India according to the India State of Forest Report 2021?
[SSC Stenographer (12 Oct 2023, Shift 2)]
(A) Alpine vegetation
(B) Mangrove cover
(C) Thorn scrub
(D) Montane forest
Answer: (B) Mangrove cover
Explanation: The India State of Forest Report 2021 recorded roughly 4,992 square kilometres of mangrove cover. Though small by area, these intertidal forests are ecologically important for shoreline protection, carbon storage and breeding habitat.
Q43. Mangrove forests are especially developed in which Indian regions?
[MP Forest Guard (3 Jun 2023, Shift 1)]
(A) Andaman and Nicobar Islands and Sundarbans
(B) Sundarbans and Lakshadweep
(C) Lakshadweep and Punjab
(D) Punjab and Sundarbans
Answer: (A) Andaman and Nicobar Islands and Sundarbans
Explanation: The Sundarbans and Andaman and Nicobar Islands contain well-developed mangrove ecosystems. Suitable tidal creeks, sheltered coastlines and brackish waters support salt-tolerant trees. Punjab has no marine coast and cannot host natural coastal mangroves.
Q42. Which forest is the only mangrove habitat of wild tigers in the world?
[SSC Selection Post (27 Jun 2023, Shift 4)]
(A) Saranda
(B) Molai
(C) Sundarbans
(D) Abujmarh
Answer: (C) Sundarbans
Explanation: The Sundarbans are exceptional because wild Bengal tigers inhabit their saline tidal mangrove forests. The ecosystem consists of muddy islands, winding creeks and salt-tolerant plants, which differ from conventional inland tiger habitats.
Q41. Consider:
a. Oaks and chestnuts occur in wet temperate forests.
b. Wet temperate forests are restricted to 3,600 m. c. Wet temperate forests are part of montane vegetation.
Which are correct?
[KVS TGT English (13 Feb 2023)]
(A) a only
(B) a and b only
(C) a and c only
(D) b and c only
Answer: (C) a and c only
Explanation: Oaks and chestnuts occur in temperate mountain forests, which are a component of montane vegetation. Such forests are not restricted exclusively to an elevation of 3,600 metres; their distribution varies with location, temperature and rainfall.
