WorksheetsMangroves: The Basics
Total questions: 25
Worksheet time: 13mins
What are mangroves? CHOOSE ALL THE CORRECT ANSWERS
Trees and bushes that don't need as much oxygen as most plants
Trees and bushes that live on the coast, where land meets water
Trees and bushes that live in deserts, where there is very little water
Trees and bushes that thrive (grow well) in saline (salty) water, which kills many plants
Why are many animals and fish born in mangroves and live in mangroves when they are young? Choose all of the correct answers.
The roots and branches provide safety by protecting them from predators.
They climb the trees to eat the salt on the leaves.
They naturally prefer to be with other young creatures.
They eat the leaf litter from the fallen leaves of mangroves.
This statement is false.
How do mangroves filter water?
They release chemicals into the water that purify it.
They make it more saline (salty) by releasing salt.
Some mangroves make it less saline (salty) by absorbing salt with their roots and excreting it in their leaves.
This statement is false. They don't filter the water.
How do mangroves help protect humans from hurricanes and tsunanis?
They release salt into the air, which neutralizes these events.
The birds, animals, and fish in the mangroves get killed instead of the humans.
They absorb up to 90% of the impact of these events.
This statement is false. Mangroves help cause hurricanes and tsunamis.
How do mangroves mitigate against (lessen the damage from) climate change?
They store carbon--up to 50 times more carbon than a rainforest.
The salt that they absorb makes the air around them cooler, which slows down global warming.
They provide a safe habitat for animals whose ecosystems have been destroyed by climate change.
This statement is false.
How do humans depend on mangroves? Choose all of the correct answers.
They eat food, such as oysters and fish, from mangroves
They get wood from mangroves to build homes and burn for fuel.
They sell products that they have gathered from mangroves to earn money.
All of the above.
How do humans modify mangroves? CHOOSE ALL OF THE CORRECT ANSWERS.
They cut them down to set up shrimp farms.
They cut them down to build roads, buildings, and farms.
They restore them by planting new mangroves.
All of the above.
What are the main TWO kinds of mangroves in Senegal?
Rhizophora, or red mangroves
Avicennia, or white mangroves
Annipetula, or purple mangroves
Nulannium, or black mangroves
True or false: Oyster collectors in the Sine Saloum used to cut the roots of mangroves to collect the oysters.
True
False
True or false: Mangroves are beautiful but don't contribute to the economies of the countries where they are located.
True
False
Why is conserving existing mangroves better than restoring mangroves that have been cut down? CHOOSE ALL THE CORRECT ANSWERS.
Restoring mangroves to their original state can take hundreds of years.
Restoring mangroves is expensive.
Restoring mangroves isn't possible.
This statement is false. Restoring mangroves is better than conserving them.
Eco-tourism is...
When people move to an area with mangroves and become oyster farmers.
When people visit a mangrove forest and chop down a tree to take home so that they can remember mangroves when they have all been destroyed.
When people visit a mangrove in a way that doesn't harm the mangroves but allows local people to earn a living from them.
When people stay in a hotel where there used to be a mangrove forest before the hotel was built.
True or false: 3/4 of tropical fish are born in mangroves.
True
False
True or false: Mangroves exist on every continent in the world.
True
False
True or false: Mangroves are still being destroyed today.
True
False
Which kinds of farming are the biggest threats to mangroves globally? CHOOSE ALL OF THE CORRECT ANSWERS.
Mango farming
Palm oil farming
Shrimp farming
Salmon farming
Why are rhizophora mangroves planted more often than avicennia mangroves?
They are cheaper to plant.
They are easier to grow.
They absorb salt in their roots so make water less salty.
All of the above.
Why were Europeans scared of mangroves? Choose all of the correct answers.
They were terrified of the birds that lived in mangroves.
They had disease-carrying mosquitoes.
They had never seen them before because they don't exist in Europe.
All of the above.
Why did enslaved Africans in the New World escape in the mangroves? Choose all of the correct answers.
Mangroves have resources that they could use to survive.
They sometimes had experience with mangroves back in Africa.
They had increased resistance to falciparum malaria.
All of the above.
True or false: Maroon communities existed all over the Americas.
True
False
What are some of the natural resources in mangroves? Choose all of the correct answers.
Fish
Birds
Wood
Oysters
All of the above
Which two threats have damaged Senegalese mangroves?
Shrimp farming
Palm oil farming
Deforestation
Drought
How is mangrove wood used in Senegal? Choose all of the correct answers.
In ceilings
As firewood
To smoke fish
All of the above
What is a challenge to protecting Senegal's mangroves? Choose all of the correct answers.
People don't know where they are.
Europeans are still afraid of mangroves and won't fund protecting them.
There aren't enough guards in nature preserves.
All of the above.
In "Money in the Mangroves", what did they say about paying people money to restore mangroves?
It didn't work because after the money ran out, people stopped wanting to restore mangroves.
It didn't work because people didn't want to work for so little money and they couldn't pay more.
It worked, but they had to raise wages constantly.
It worked and they were continuing to pay people.
