Natural Vegetation — Set 5
Geography · प्राकृतिक वनस्पति · Questions 41–50 of 50
Wet temperate forests are found at a height of?
Correct Answer: D. 1000 to 2000 meters
Wet temperate forests are found at altitudes between 1000 and 2000 meters. They are characterized by the presence of evergreen broad-leaf trees like oaks and chestnuts. These are commonly found in the higher hills of West Bengal and Sikkim.
The vegetation found at the highest altitudes of the Himalayas, near the snowline, is?
Correct Answer: B. Alpine Tundra
At very high altitudes near the snowline, alpine vegetation gives way to Tundra vegetation. This consist of mosses and lichens. This is the extreme limit of plant life in the mountain regions.
Which of the following states does NOT have mangrove forests?
Correct Answer: A. Rajasthan
Rajasthan is a landlocked desert state and does not have the coastal conditions required for mangroves. West Bengal, Gujarat, and Andhra Pradesh have significant mangrove areas in their coastal deltas. Mangroves require saline water and tidal influence to grow.
A very large ecosystem on land having distinct types of vegetation and animal life is called a?
Correct Answer: D. Biome
A Biome is a large-scale ecosystem defined by its climate and dominant plant and animal species. Terrestrial biomes are identified primarily on the basis of vegetation. Examples include tropical rainforests, deserts, and tundras.
Cacti and Euphorbias are common plant species of which region?
Correct Answer: B. North-western India (Semi-arid)
Cacti and Euphorbias are succulent plants found in the semi-arid thorn forests of north-western India. They are adapted to store water in their thick stems. These plants are typical of desert and semi-desert landscapes.
Which of the following is a hardwood tree species?
Correct Answer: D. Mahogany
Mahogany is a classic hardwood tree found in tropical evergreen forests. Pine, Silver Fir, and Spruce are softwoods found in temperate coniferous forests. Hardwood is generally more dense and durable than softwood.
What is the primary cause of forest degradation in India?
Correct Answer: D. Overgrazing and human encroachment
Overgrazing by livestock and encroachment by humans for agriculture and housing are primary causes of forest degradation. Illegal felling of trees also contributes significantly to the loss of green cover. Conservation efforts aim to mitigate these human-induced pressures.
Which tree species is used for making high-quality sports goods like cricket bats?
Correct Answer: A. Willow
Willow wood is the preferred material for making high-quality cricket bats. It is a lightweight yet strong wood found in temperate regions like Kashmir. This makes it a commercially significant tree species for the sports industry.
The Biosphere Reserves in India are established primarily to?
Correct Answer: B. Conserve biodiversity in its natural habitat
Biosphere Reserves are established to protect and conserve biodiversity and entire ecosystems. They aim to balance conservation with sustainable use of resources. India has a network of several Biosphere Reserves across different biogeographic zones.
Which part of India is known for its high concentration of orchids in natural vegetation?
Correct Answer: D. North-Eastern Himalayas
The North-Eastern Himalayas are famous for their incredibly rich variety of wild orchids. The humid and cool climate of this region is ideal for orchid growth. Many of these species are rare and endemic to the region.