Question:
Ideal season for the collection of propagules for mangroves for the nursery would be
Ideal season for the collection of propagules for mangroves for the nursery would be
Show Hint
Mangrove reproduction is synchronized with the monsoon. Propagules drop when the water is less saline, which is June-August.
Updated On: Aug 20, 2026
- January to March
- September to December
- June to August
- April to June
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
Mangroves have a unique reproductive strategy. The question asks for the best time to collect their "propagules" (germinated seeds still attached to the tree) for nursery establishment.
Step 2: Detailed Explanation:
• Vivipary: Many mangrove species (like Rhizophora) exhibit vivipary, where the seed germinates while still on the parent tree, producing a seedling called a propagule.
• Phenology in India: In most Indian coastal regions, the flowering and fruiting cycle of dominant mangroves leads to the maturation of propagules during the Southwest Monsoon months.
• Timing: The months of June, July, and August are when propagules are fully mature, elongated, and ready to fall. Collecting them directly from the tree at this stage ensures high viability and health.
• Nursery Benefits: Collecting during the monsoon allows the propagules to be sown in the nursery when humidity is high and salinity in the nursery beds (often estuarine water) is naturally lower due to rain, promoting better rooting.
• Species Specifics: For species like Avicennia and Ceriops, this period is the peak time for seed/propagule availability across the Sundarbans, Western Coast, and Andaman regions.
Step 3: Final Answer:
The ideal season for the collection of mangrove propagules is June to August.
Mangroves have a unique reproductive strategy. The question asks for the best time to collect their "propagules" (germinated seeds still attached to the tree) for nursery establishment.
Step 2: Detailed Explanation:
• Vivipary: Many mangrove species (like Rhizophora) exhibit vivipary, where the seed germinates while still on the parent tree, producing a seedling called a propagule.
• Phenology in India: In most Indian coastal regions, the flowering and fruiting cycle of dominant mangroves leads to the maturation of propagules during the Southwest Monsoon months.
• Timing: The months of June, July, and August are when propagules are fully mature, elongated, and ready to fall. Collecting them directly from the tree at this stage ensures high viability and health.
• Nursery Benefits: Collecting during the monsoon allows the propagules to be sown in the nursery when humidity is high and salinity in the nursery beds (often estuarine water) is naturally lower due to rain, promoting better rooting.
• Species Specifics: For species like Avicennia and Ceriops, this period is the peak time for seed/propagule availability across the Sundarbans, Western Coast, and Andaman regions.
Step 3: Final Answer:
The ideal season for the collection of mangrove propagules is June to August.
Was this answer helpful?
0
0
Top ICAR AIEEA Forestry Agroforestry Silviculture Questions
- Read the following statements of silvicultural system followed in tree species and choose the correct answer from the following options:
Statement (I): Anogeissus latifolia is worked only as a component species of mixed forests as coppice-with-standards.
Statement (II): Terminalia arjuna tree is not a regular component of forest stand and is usually worked under selection and coppice with standards.
Choose the correct answer from the options given below: - The most important single factor affecting natural regeneration of Shorea robusta is the time lag between the falling of seed and the commencement of the ________.
- Read the following statements and choose the correct answer about silvicultural system/s adopted for the management of Shorea robusta:
Statement (I): Under clear felling system, a rotation age is fixed and the entire area clear felled and the crop is of uniform age.
Statement (II): Selection system is adopted for areas which are badly eroded and where regeneration is problem and regeneration is obtained by natural means, which may be supplemented by planting.
Statement (III): In coppice with standards system, a few standards are retained and the other trees above the exploitable diameter are clear felled and regeneration is obtained by means of coppice.
Choose the correct answer from the options given below: - Which of the following type of soil is the best for plant growth?
- A biosphere reserve conserves and preserves the following variety of life and choose the correct option of variety of life:
(A). Wild animals
(B). Wild land
(C). Natural vegetation
Choose the correct answer from the options given below:
View More Questions
Top ICAR AIEEA Silviculture Questions
- Read the following statements of silvicultural system followed in tree species and choose the correct answer from the following options:
Statement (I): Anogeissus latifolia is worked only as a component species of mixed forests as coppice-with-standards.
Statement (II): Terminalia arjuna tree is not a regular component of forest stand and is usually worked under selection and coppice with standards.
Choose the correct answer from the options given below: - The most important single factor affecting natural regeneration of Shorea robusta is the time lag between the falling of seed and the commencement of the ________.
- Read the following statements and choose the correct answer about silvicultural system/s adopted for the management of Shorea robusta:
Statement (I): Under clear felling system, a rotation age is fixed and the entire area clear felled and the crop is of uniform age.
Statement (II): Selection system is adopted for areas which are badly eroded and where regeneration is problem and regeneration is obtained by natural means, which may be supplemented by planting.
Statement (III): In coppice with standards system, a few standards are retained and the other trees above the exploitable diameter are clear felled and regeneration is obtained by means of coppice.
Choose the correct answer from the options given below: - Which of the following species has characteristic of tree without leaf for longest period of about 6 months.?
- What is the scientific name of the tree "Hollong"?
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions