Which of the following is a benefit of maintaining connectivity in marine ecosystems?

Enhanced resilience of ecosystems to environmental changes

Why is connectivity important for marine biodiversity?

It allows species to migrate and maintain genetic diversity.

Mangroves are typically found in:

Salt-tolerant shrubs or small trees growing in intertidal zones

What is genetic diversity

The variation of genes within a species

Which of the following is an example of genetic diversity in the marine environment?

Colour variations in clownfish populations

What role does structural complexity play in supporting marine biodiversity?

It creates habitats and enhances species interactions

Continental shelves are known for their:

Shallow water that supports diverse marine life and ecosystems.

Which of the following best describes an invasive species?

A species introduced to a new area that outcompetes native species

Critical nursery habitats are vital for marine species because they provide:

Protection from predators for juveniles

What is Simpson’s Diversity Index (SDI), and what does it measure?

The prob that 2 randomly selected individuals belong to different species

Which of these ecosystems is an example of ecosystem diversity in the marine environment?

Mangroves, coral reefs and deep-sea vents

A fringing reef is an example of which type of marine ecosystem?

A coral reef that is attached to the continental landmass

What is meant by 'structural complexity' in marine ecosystems?

The physical structures like reefs and mangroves that provide shelter

What is the primary characteristic of an estuary?

A partially enclosed coastal body of brackish water where rivers meet sea

How do nursery habitats contribute to marine biodiversity?

By providing a place for species to breed and mature

What does species diversity include?

Species richness and species evenness

What does "connectivity" in marine ecosystems primarily refer to?

The physical, biological, and ecological links between habitats

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U2 Marine Science - Biodiversity Review

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Questions 21

Answers

1
Which of the following is a benefit of maintaining connectivity in marine ecosystems?
Enhanced resilience of ecosystems to environmental changes
Increased vulnerability to invasive species
Reduced interactions between species
Decreased productivity of coastal ecosystems
2
Why is connectivity important for marine biodiversity?
It prevents predators from accessing prey species.
It eliminates competition among species.
It reduces the need for conservation efforts.
It allows species to migrate and maintain genetic diversity.
3
Mangroves are typically found in:
The open ocean far from shore
Deep-sea ecosystems with no tidal influence
High-altitude freshwater lakes
Salt-tolerant shrubs or small trees growing in intertidal zones
4
What is genetic diversity
The variety of species in an ecosystem
The number of individuals in a species
The variation of genes within a species
The variety of ecosystems in a region
5
Which of the following is an example of genetic diversity in the marine environment?
Different types of coral reefs
The variety of fish species in a mangrove
The presence of seagrass beds and deep-sea vents
Colour variations in clownfish populations
6
What role does structural complexity play in supporting marine biodiversity?
It increases the water's temperature
It creates habitats and enhances species interactions
It ensures oxygen is evenly distributed in water
It reduces the ocean's acidity levels
7
What is a major consequence of habitat fragmentation?
Enhanced migration pathways
Reduced genetic diversity
Increased species abundance
Stabilised ecosystems
8
Which of the following ecosystems is an example of a critical nursery habitat?
Coral reef
Mangrove
Open ocean
Polar ice caps
9
Continental shelves are known for their:
Shallow water that supports diverse marine life and ecosystems.
Deep water and high-pressure conditions.
Consistently high salinity levels.
Complete lack of sunlight.
10
Which of the following best describes an invasive species?
A species adapted to survive climate change
A species introduced to a new area that outcompetes native species
A species that is endangered in its native habitat
A species that stabilises ecosystems
11
Wide dispersal at sea is primarily facilitated by which of the following mechanisms?
Increased water temperature
Ocean currents and tides
Nutrient availability
Migration of predators
12
Critical nursery habitats are vital for marine species because they provide:
Migration routes for seasonal movements
Unlimited food resources for adult species
Reduces salinity for fish growth
Protection from predators for juveniles
13
What is Simpson’s Diversity Index (SDI), and what does it measure?
The total number of species in an ecosystem
The prob that 2 randomly selected individuals belong to different species
The dominance of a single species in an ecosystem
The amount of biomass produced in an ecosytem
14
Which of these ecosystems is an example of ecosystem diversity in the marine environment?
Mangroves, coral reefs and deep-sea vents
Genetic variation in coral populations
Predator-prey relationships among fish
Nutrient cycling in seagrass beds
15
Which of the following is a unique characteristic of marine biodiversity?
Lack of nursery habitats
Wide dispersal at sea
Low need for structural complexity
Limited dispersal of organisms
16
A fringing reef is an example of which type of marine ecosystem?
A lagoon created by coral growth
A coral reef that is attached to the continental landmass
A shallow coastal area with no reef
A deep-sea reef found far from the coast
17
What is meant by 'structural complexity' in marine ecosystems?
The chemical composition of seawater
The intricate social behaviour of marine species
The physical structures like reefs and mangroves that provide shelter
The depth of the ocean where species live
18
What is the primary characteristic of an estuary?
A type of coral reef found near tropical shores
A partially enclosed coastal body of brackish water where rivers meet sea
A deep-sea environment with high pressure
A body of saltwater surrounded by land.
19
How do nursery habitats contribute to marine biodiversity?
By increasing salinity of seawater
By eliminating predators
By reducing competition for resources
By providing a place for species to breed and mature
20
What does species diversity include?
Species richness and species evenness
Genetic variation within a species
The total number of organisms in an area
The number of variety of ecosystems
21
What does "connectivity" in marine ecosystems primarily refer to?
The competition between species in a habitat
The physical, biological, and ecological links between habitats
The adaptation of species to climate change
The genetic variation within a single species

U2 Marine Science - Biodiversity Review Flashcards | StudBud