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What unique characteristic enables mangroves to thrive in a variety of habitats, making them highly resilient ecosystems?- a)Their ability to withstand extreme temperatures
- b)Their capacity to filter salt through their roots
- c)Their adaptation to fluctuating water levels
- d)Their requirement for high levels of rainfall
Correct answer is option 'C'. Can you explain this answer?
a)
Their ability to withstand extreme temperatures
b)
Their capacity to filter salt through their roots
c)
Their adaptation to fluctuating water levels
d)
Their requirement for high levels of rainfall
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Tutorpedia Coaching answered |
Mangroves' remarkable adaptability to fluctuating water levels is a key factor that contributes to their resilience and success as ecosystems. This ability allows them to thrive in various habitats, demonstrating their remarkable capacity to withstand changing environmental conditions.
How do lower marshes in salt marsh ecosystems serve as natural defenses against coastal erosion?- a)By promoting the growth of invasive species
- b)By facilitating the deposition of coarse sediments
- c)By being submerged daily by the high tide
- d)By preventing the accumulation of sediment
Correct answer is option 'C'. Can you explain this answer?
a)
By promoting the growth of invasive species
b)
By facilitating the deposition of coarse sediments
c)
By being submerged daily by the high tide
d)
By preventing the accumulation of sediment
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Tutorpedia Coaching answered |
Lower marshes in salt marsh ecosystems serve as natural defenses against coastal erosion by being submerged daily by the high tide. This regular inundation helps to dissipate wave energy and stabilize the coastline, reducing the erosive impact of tidal forces. The vegetation and topography of lower marsh areas play a crucial role in protecting coastal regions from erosion and maintaining the integrity of the salt marsh ecosystem.
What is the process by which vegetation develops over time in salt marshes known as?- a)Plantation
- b)Halophyte succession
- c)Desertification
- d)Deforestation
Correct answer is option 'B'. Can you explain this answer?
a)
Plantation
b)
Halophyte succession
c)
Desertification
d)
Deforestation
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Tutorpedia Coaching answered |
The process by which vegetation develops over time in salt marshes is known as halophyte succession. This term specifically refers to the succession of plant species in salt marsh ecosystems as they adapt to the changing environmental conditions within the marsh. Halophyte succession plays a crucial role in the development and stability of salt marsh habitats, contributing to their ecological diversity and resilience.
What is the significance of pioneer halophyte plants in the development of salt marshes?- a)They inhibit the growth of other plant species.
- b)They accelerate the drying out of the soil.
- c)They enrich the soil through decay.
- d)They prevent sediment accumulation.
Correct answer is option 'C'. Can you explain this answer?
a)
They inhibit the growth of other plant species.
b)
They accelerate the drying out of the soil.
c)
They enrich the soil through decay.
d)
They prevent sediment accumulation.
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Tutorpedia Coaching answered |
Pioneer halophyte plants play a significant role in the development of salt marshes by enriching the soil through their decay. As these pioneer plants decompose, they contribute organic matter to the sediment, fostering nutrient cycling and soil development within the marsh ecosystem. This process creates a fertile substrate that supports the growth of diverse plant species over time, contributing to the overall biodiversity and ecological function of the salt marsh environment.
How do seagrasses contribute to the biodiversity of coastal ecosystems?- a)By providing a source of food for apex predators
- b)By serving as breeding grounds for marine mammals
- c)By offering shelter and nursery areas for various marine species
- d)By regulating the salinity levels of the surrounding water
Correct answer is option 'C'. Can you explain this answer?
a)
By providing a source of food for apex predators
b)
By serving as breeding grounds for marine mammals
c)
By offering shelter and nursery areas for various marine species
d)
By regulating the salinity levels of the surrounding water
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Tutorpedia Coaching answered |
Seagrasses enhance the biodiversity of coastal ecosystems by providing shelter and nursery areas for a wide range of marine species. These underwater meadows offer refuge for juvenile fish, crustaceans, and other marine organisms, supporting their growth and survival. The intricate structure of seagrass beds also creates microhabitats that attract diverse flora and fauna, contributing to the overall richness and complexity of coastal ecosystems.
What is a key role of coral reefs in maintaining the health of coastal ecosystems?- a)Absorbing excess carbon dioxide from the atmosphere
- b)Filtering pollutants from the water
- c)Providing a source of freshwater for coastal communities
- d)Supporting a high level of primary productivity
Correct answer is option 'D'. Can you explain this answer?
a)
Absorbing excess carbon dioxide from the atmosphere
b)
Filtering pollutants from the water
c)
Providing a source of freshwater for coastal communities
d)
Supporting a high level of primary productivity
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Tutorpedia Coaching answered |
Coral reefs play a crucial role in maintaining the health of coastal ecosystems by supporting a high level of primary productivity. These diverse and vibrant marine habitats are home to a wide array of species that contribute to the cycling of nutrients and energy within the ecosystem. The productivity of coral reefs sustains food chains, supports fisheries, and promotes overall ecosystem health by fostering biodiversity and ecological resilience.
What specialized root structures do some mangrove species utilize to adapt to the soft sediment at tidal boundaries?- a)Filtration roots
- b)Snorkel-like roots
- c)Prop roots
- d)Buttress roots
Correct answer is option 'D'. Can you explain this answer?
a)
Filtration roots
b)
Snorkel-like roots
c)
Prop roots
d)
Buttress roots
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Tutorpedia Coaching answered |
Some mangrove species utilize 'prop' roots or 'buttresses' to maintain the vertical stability of their trunks in the soft sediment found at the tidal boundaries. These specialized root structures play a crucial role in supporting the trees and ensuring their growth in challenging environments.
How do mangroves colonize new territories and expand into fresh intertidal areas?- a)By releasing airborne spores during high tides
- b)Through the dispersal of seeds carried by birds
- c)By forming floating fruits and seedlings
- d)Through underground root networks connecting different areas
Correct answer is option 'C'. Can you explain this answer?
a)
By releasing airborne spores during high tides
b)
Through the dispersal of seeds carried by birds
c)
By forming floating fruits and seedlings
d)
Through underground root networks connecting different areas
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Tutorpedia Coaching answered |
Mangroves colonize new territories and expand into fresh intertidal areas by producing fruits and seedlings that have the ability to float. These floating fruits and seedlings are carried by ocean currents and tides, eventually settling in mud where they initiate growth, allowing the mangroves to spread into new areas.
What is a crucial factor for coral reefs, ensuring they receive the necessary oxygen and nutrients vital for their survival?- a)Exposure to sunlight
- b)Wave action
- c)Sediment in the water
- d)Air pollution
Correct answer is option 'B'. Can you explain this answer?
a)
Exposure to sunlight
b)
Wave action
c)
Sediment in the water
d)
Air pollution
|
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Tutorpedia Coaching answered |
Wave action plays a crucial role in providing well-oxygenated and clean water to coral reefs, which is vital for their survival. The movement of waves helps in delivering the necessary oxygen and nutrients to the coral reefs, supporting their growth and health. This constant wave action ensures that the corals have access to the resources they need to thrive in their marine environment.
What is the primary reason behind the high biodiversity of mangroves in South-East Asia?- a)Favorable temperature conditions
- b)Abundance of rainfall
- c)Unique root structures
- d)Variety of habitats
Correct answer is option 'D'. Can you explain this answer?
a)
Favorable temperature conditions
b)
Abundance of rainfall
c)
Unique root structures
d)
Variety of habitats
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Tutorpedia Coaching answered |
The high biodiversity of mangroves in South-East Asia can be attributed to the variety of habitats available in the region. These diverse habitats provide different niches for various species of mangroves to thrive, leading to a rich and varied ecosystem in this part of the world.
Chapter doubts & questions for Coasts - Geography for GCSE/IGCSE 2025 is part of Class 10 exam preparation. The chapters have been prepared according to the Class 10 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 10 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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