Natural Vegetation — Set 4
Geography · प्राकृतिक वनस्पति · Questions 31–40 of 50
Natural vegetation refers to a plant community which has grown naturally without human aid and has been left undisturbed by humans for a long time. This is also called?
Correct Answer: B. Virgin vegetation
Virgin vegetation is the natural plant community that grows without any human intervention. It remains undisturbed by human activities for a significant period of time. Crops and orchards are not considered virgin vegetation as they are human-aided.
Flora refers to?
Correct Answer: D. Plants of a particular region or period
The term 'Flora' is used to denote plants of a particular region or period. Similarly, 'Fauna' refers to the species of animals. Together, they represent the biological diversity of an area.
Which of the following factors does NOT affect the natural vegetation of a place?
Correct Answer: B. Internet connectivity
Natural vegetation is primarily influenced by physical factors like land, soil, temperature, photoperiod, and precipitation. Internet connectivity has no impact on how plants grow in the wild. These physical factors determine the type and density of forests.
The variation in duration of sunlight at different places is due to differences in latitude, altitude, and?
Correct Answer: A. Season
The duration of sunlight, also known as photoperiod, varies based on latitude, altitude, and season. Trees grow faster in summer due to longer photoperiods. This variation directly influences the growth rate of natural vegetation.
In India, almost the entire rainfall is brought in by the advancing southwest monsoon and retreating?
Correct Answer: A. Northeast monsoons
The advancing southwest monsoon and retreating northeast monsoon provide the necessary water for India's vegetation. Areas with heavy rainfall have more dense vegetation compared to areas with less rainfall. The monsoon cycle determines the seasonal behavior of most Indian forests.
Which of the following is an environmental benefit of forests?
Correct Answer: C. They control soil erosion
Forests play a vital role in controlling soil erosion by holding the soil with their roots. They also regulate stream flow and modify local climates. Forests are essential for maintaining the overall ecological balance of the planet.
Tropical Evergreen forests are also called?
Correct Answer: C. Tropical Rain Forests
Tropical Evergreen forests are also known as Tropical Rain Forests because they occur in high rainfall areas. They are found in the Western Ghats, Lakshadweep, and Upper Assam. These forests appear green all year round because trees shed leaves at different times.
Based on the availability of water, deciduous forests are further divided into?
Correct Answer: D. Moist and Dry
Deciduous forests are categorized into Moist and Dry deciduous based on water availability. Moist deciduous forests are found in areas with 100-200 cm of rain. Dry deciduous forests are found in areas with 70-100 cm of rain.
Which of the following animals is commonly found in Tropical Deciduous forests?
Correct Answer: A. Lion
Lions, tigers, pigs, deer, and elephants are common animals of the Tropical Deciduous forests. A huge variety of birds, lizards, snakes, and tortoises are also found here. These forests provide a rich habitat for diverse Indian wildlife.
Pneumatophores (breathing roots) are a special feature of plants in which forest?
Correct Answer: C. Mangrove Forests
Mangrove plants have special breathing roots called pneumatophores that grow upwards out of the water. These roots help the plant breathe in oxygen from the air since the soil is waterlogged and anaerobic. This is a unique adaptation for survival in saline swampy areas.