NPTEL Forests and Their Management Week 1 And 2 Assignment Answers 2025
1. Which of these is not a consumptive value?
Options:
A. Timber
B. Firewood
C. Non-timber forest products
D. Education ✅
✅ Answer: D
Explanation: Consumptive values refer to direct use of natural resources, like timber, firewood, and NTFPs. Education is a non-consumptive (indirect) value, as it doesn’t use or deplete the resource physically.
2. Which of these is not a forest type found in India?
Options:
A. Mediterranean dry ✅
B. Tropical dry
C. Montane temperate
D. Alpine
✅ Answer: A
Explanation: Mediterranean dry forests are not found in India. They are typical of the Mediterranean region. India has Tropical, Montane, and Alpine forest types.
3. “Plant community, predominantly comprised of trees and other woody vegetation, usually with a closed canopy” is
Options:
A. Silvicultural definition of forests
B. FAO definition of forests
C. Legal definition of forests
D. Ecological definition of forests ✅
✅ Answer: D
Explanation: The ecological definition focuses on the plant community structure, such as tree dominance and canopy cover, not on legal or management aspects.
4. According to the Supreme Court, the word forest must be understood according to its
Options:
A. Biological meaning
B. Ecological meaning
C. Silvicultural meaning
D. Dictionary meaning ✅
✅ Answer: D
Explanation: In the landmark Godavarman case (1996), the Supreme Court ruled that ‘forest’ must be interpreted using its dictionary meaning, which includes any land with forest-like characteristics, regardless of official classification.
5. Which of these is not a use value?
Options:
A. Direct value
B. Indirect value
C. Option value
D. Existence value ✅
✅ Answer: D
Explanation: Use values include direct (e.g., timber) and indirect (e.g., ecological services). Option value is potential future use. Existence value refers to the benefit of just knowing that a resource exists, even without using it — a non-use value.
6. According to the Supreme Court, the term forest land includes
Options:
A. Some area recorded as forest in the Government record according to ownership
B. Any area recorded as forest in the Government record according to ownership
C. Some area recorded as forest in the Government record irrespective of ownership
D. Any area recorded as forest in the Government record irrespective of ownership ✅
✅ Answer: D
Explanation: The Supreme Court held that any land recorded as forest in government records, regardless of ownership, qualifies as forest land for regulatory purposes.
7. Tropical moist forests do not include
Options:
A. Broadleaved forests ✅
B. Wet evergreen forests
C. Semi-evergreen forests
D. Moist deciduous forests
✅ Answer: A
Explanation: Tropical moist forests include wet evergreen, semi-evergreen, and moist deciduous forests. Broadleaved is a general term, not a specific forest type under this classification.
8. The value of leaving use and non-use values for offspring’s or future generations is called
Options:
A. Altruistic value
B. Bequest value ✅
C. Existence value
D. Option value
✅ Answer: B
Explanation: Bequest value is the worth placed on preserving resources for future generations, even if the current generation doesn’t use them.
9. The term ‘forest’ originates from
Options:
A. Latin foris meaning outside ✅
B. Greek foris meaning outside
C. Latin foris meaning trees
D. Greek foris meaning trees
✅ Answer: A
Explanation: The word “forest” comes from the Latin word “foris”, meaning “outside”, as forests were seen as land outside the cultivated or settled area.
10. The value derived from the knowledge of use of resources by others in the current generation is called
Options:
A. Altruistic value ✅
B. Bequest value
C. Existence value
D. Option value
✅ Answer: A
Explanation: Altruistic value is the satisfaction one gets from others benefiting from the resource, even if they do not personally use it.
NPTEL Forests and Their Management Week 2 Assignment Answers
1. Lithosere is an example of:
Options:
A. Hydrosere
B. Xerosere ✅
C. Psammosere
D. Halosere
✅ Answer: B
Explanation: Lithosere is a type of xerosere, which refers to primary succession starting on bare rock surfaces. It’s a dry habitat initially, hence “xero” (dry).
2. Which of these depicts correctly the lithosere primary succession?
Options:
A. Rock → Crustose lichen → Foliose lichen → Moss → Herbaceous stage → Shrub → Woodland → Climax ✅
B. Rock → Foliose lichen → Crustose lichen → Moss → Herbaceous stage → Shrub → Woodland → Climax
C. Moss → Crustose lichen → Foliose lichen → Rock → Herbaceous stage → Shrub → Woodland → Climax
D. Rock → Crustose lichen → Foliose lichen → Shrub → Herbaceous stage → Moss → Woodland → Climax
✅ Answer: A
Explanation: This is the correct ecological succession for lithosere, starting from bare rock to a climax community, usually forest. Crustose lichen colonizes first, followed by foliose lichen, mosses, herbaceous plants, shrubs, and trees.
3. At compensation point:
Options:
A. Photosynthesis = Respiration ✅
B. Photosynthesis > Respiration
C. Photosynthesis < Respiration
D. None of these
✅ Answer: A
Explanation: At the compensation point, the rate of photosynthesis equals the rate of respiration. There’s no net gain in energy or biomass.
4. The study of life history / general features of forest crops with respect to environmental factors is called:
Options:
A. Foresticulture
B. Monoculture
C. Silviculture
D. Silvics ✅
✅ Answer: D
Explanation: Silvics is the study of the life history, characteristics, and environmental interactions of forest trees and crops.
5. A climax caused by wildfires is an example of:
Options:
A. Climatic climax
B. Edaphic climax
C. Disclimax
D. Catastrophic climax ✅
✅ Answer: D
Explanation: A catastrophic climax occurs due to a sudden disturbance like wildfire, flood, or storm that alters the expected succession outcome.
6. Net primary productivity is given by:
Options:
A. APAR + LUE
B. APAR × LUE ✅
C. APAR – LUE
D. APAR ÷ LUE
✅ Answer: B
Explanation:
- APAR = Absorbed Photosynthetically Active Radiation
- LUE = Light Use Efficiency
- Hence, NPP = APAR × LUE
7. Practical application of scientific, technical and economic principles of forestry comes under which branch?
Options:
A. Forest Management ✅
B. Forest Economics
C. Forest Mensuration
D. Forest Protection
✅ Answer: A
Explanation: Forest management involves planning, implementation, and monitoring based on scientific, economic, and technical principles to sustainably manage forests.
8. In the context of plant nutrition, boron is:
Options:
A. Macronutrient
B. Micronutrient ✅
C. Primary nutrient
D. Secondary nutrient
✅ Answer: B
Explanation: Boron is a micronutrient, required in very small amounts for plant growth, particularly for cell wall strength and reproduction.
9. Which of these is not a characteristic of pioneer species?
Options:
A. Ability to grow on bare rocks
B. Ability to tolerate extreme temperatures
C. Large size ✅
D. Short life span
✅ Answer: C
Explanation: Pioneer species are typically small, fast-growing, and hardy, capable of colonizing harsh environments. Large size is not a trait of pioneers.
10. The climax near Tindni village is being controlled by disturbance by cattle. This is an example of:
Options:
A. Climatic climax
B. Edaphic climax
C. Disclimax ✅
D. Catastrophic climax
✅ Answer: C
Explanation: Disclimax is a stable but modified climax due to persistent human or animal disturbance like grazing, preventing natural climax formation.