Explanation:

Statement 1 is not correct: Tropical thorn forests occur in areas that receive rainfall less than 50 cm. These consist of a variety of grasses and shrubs. It includes semi-arid areas of southwest Punjab, Haryana, Rajasthan, Gujarat, Madhya Pradesh, and Uttar Pradesh. In these forests, plants remain leafless for most of the year and give an expression of scrub vegetation. Important species found are babool, ber, wild date palm, Khair, neem, khejri, palas, etc. Tussocky grass grows up to a height of 2 m as the undergrowth. Statement 2 is correct: Montane Forests: In mountainous areas, the decrease in temperature with increasing altitude leads to a corresponding change in natural vegetation. Mountain forests can be classified into two types, the northern mountain forests, and the southern mountain forests. The Himalayan ranges show a succession of vegetation from the tropical to the tundra, which changes with the altitude. Deciduous forests are found in the foothills of the Himalayas. It is succeeded by the wet temperate type of forests between an altitude of 1,000-2,000 m. In the higher hill ranges of northeastern India, hilly areas of West Bengal and Uttaranchal, evergreen broadleaf trees such as oak and chestnut are predominant. Between 1,500-and 1,750 m, pine forests are also well-developed in this zone, with Chir Pine as a very useful commercial tree. Deodar, a highly valued endemic species grows mainly in the western part of the Himalayan range. Deodar is a durable wood mainly used in construction activities.