WorksheetsMarine Botany
Total questions: 20
Worksheet time: 10mins
Which zone of the pelagic province is known as the "sunlit zone"?
Abyssopelagic
Bathypelagic
Epipelagic
Hadalpelagic
What is the depth range of the abyssopelagic zone?
200–1,000 m
1,000–4,000 m
4,000–6,000 m
Below 6,000 m
Which zone of the oceanic province supports photosynthesis?
Mesopelagic
Bathypelagic
Epipelagic
Abyssopelagic
Which benthic zone is characterized by periodic wetting due to wave spray but remains mostly dry?
Littoral Zone
Sublittoral Zone
Supralittoral Zone
Bathyal Zone
What is a key characteristic of organisms in the abyssal zone?
Photosynthesis
Bioluminescence
Tolerance to high temperatures
Dependence on sunlight
What is the dominant sediment type in muddy shores?
Sand
Gravel
Silt and clay
Coral fragments
What is the primary role of sandy shores in coastal protection?
Reducing biodiversity
Acting as carbon sinks
Absorbing wave energy
Supporting mangrove forests
What is the highest point of a wave called?
Trough
Crest
Wavelength
Wave period
Mangroves are commonly found on rocky shores.
True
False
Tsunamis are caused by seismic activity such as underwater earthquakes.
True
False
What role do mangroves play in coastal protection?
They act as natural barriers that protect coastlines from erosion and storms
It help keep ships from sinking
It serves to prevent animals from leaving
How can mangroves be protected?
Paying more attention to the surroundings
You talk about the mangroves
Through ecosystem restoration, education, implementation of conservation policies and research
What economic resources do mangroves provide?
Mud and potholes
Those of animals
They provide timber, fish products and opportunities for ecotourism
What are some threats to mangroves?
Fewer rivers, savanna’s and lakes
Urbanización, pollution, climate change and overexploitation of resources
Animals and plants In poor condition
This compound makes up the shells of clams, oysters, scallops, etc
Calcium Chloride
Calcium Carbonate
Sodium Chloride
Sodium Carbonate
A property of the seawater that allows sunlight to penetrate the surface in order for photosynthesis to occur
Turbidity
Transparency
Aphotic Zone
Blue wavelengths
Salinity is measured in
PPM (parts per million)
PPT (parts per thousand)
PPB (parts per billion)
Grams
The most abundant ion dissolved in seawater
Sodium
Oxygen
Hydrogen
Chloride
What photos are the Mangroves tree?
What is special about the seed of Mangroves?
It germinates before dropping off the parent plant
It has pretty blue leaves
It can fly in the wind up to 20 km
It undergoes photosynthesis in the dark
