Biology ยท General Awareness

Aquatic and Marine Biology

1,905 Questions

This hub covers key concepts in aquatic and marine biology, including fish anatomy, marine animal behavior, and commercial fisheries. These topics are essential for general science sections in various competitive exams. Use these resources to test your knowledge of diverse aquatic ecosystems.

Marine animal adaptationsCommercial fisheriesFish anatomyAquatic ecosystems

Aquatic and Marine Biology Questions

Multiple choice

What is the scientific name of the common dolphin?

  1. Delphinus delphis

  2. Tursiops truncatus

  3. Orcinus orca

  4. Phocoena phocoena
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The common dolphin is a species of oceanic dolphin found in warm and temperate waters around the world.

Multiple choice

Which aquarium is located in Sydney, Australia, and is known for its iconic underwater tunnel?

  1. Sydney Aquarium

  2. Taronga Zoo

  3. Featherdale Wildlife Park

  4. Koala Park Sanctuary
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sydney Aquarium in Sydney, Australia, is famous for its impressive underwater tunnel, offering visitors a unique perspective of marine life and underwater ecosystems.

Multiple choice

Which marine park is located in San Diego, California, and is known for its extensive collection of sea turtles?

  1. SeaWorld San Diego

  2. San Diego Zoo

  3. Birch Aquarium at Scripps Institution of Oceanography

  4. Legoland California
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Birch Aquarium at Scripps Institution of Oceanography in San Diego, California, is renowned for its extensive collection of sea turtles, providing visitors with insights into the biology and conservation of these marine creatures.

Multiple choice

Which marine animal is particularly vulnerable to entanglement in marine debris?

  1. Sea turtles

  2. Whales

  3. Seals

  4. Dolphins
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sea turtles are particularly vulnerable to entanglement in marine debris, especially plastic debris, due to their feeding habits and inability to distinguish between food and debris.

Multiple choice

Which type of marine debris is often mistaken for food by marine animals?

  1. Plastic bags

  2. Fishing line

  3. Cigarette butts

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plastic bags, fishing line, and cigarette butts are often mistaken for food by marine animals due to their resemblance to natural prey or food items.

Multiple choice

Which type of marine debris is particularly harmful to coral reefs?

  1. Plastic debris

  2. Metal debris

  3. Glass debris

  4. Paper debris
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plastic debris, particularly microplastics, is particularly harmful to coral reefs as it can smother corals, block sunlight, and introduce harmful chemicals into the reef ecosystem.

Multiple choice

What are some of the most common types of organic aquaculture?

  1. Organic fish farming

  2. Organic shrimp farming

  3. Organic seaweed farming

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The most common types of organic aquaculture include organic fish farming, organic shrimp farming, and organic seaweed farming.

Multiple choice

What are some of the most common types of organic aquaculture?

  1. Organic fish farming

  2. Organic shrimp farming

  3. Organic seaweed farming

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The most common types of organic aquaculture include organic fish farming, organic shrimp farming, and organic seaweed farming.

Multiple choice

Which of the following is an example of a keystone species in a marine ecosystem?

  1. Sea urchins

  2. Coral reefs

  3. Sea otters

  4. Plankton
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sea otters are considered a keystone species in marine ecosystems. They prey on sea urchins, which helps control the population of sea urchins and prevents them from overgrazing kelp forests. This, in turn, supports a diverse community of marine life that relies on kelp forests for food and habitat.

Multiple choice

What type of fish are commonly caught while houseboat fishing?

  1. Bass

  2. Trout

  3. Salmon

  4. Catfish

  5. Walleye
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Houseboat fishing can be productive for catching a variety of fish species, including bass, trout, salmon, catfish, and walleye.

Multiple choice

In 2022, a team of researchers announced the discovery of a new species of fish that can survive in extremely acidic waters. Where was this fish found?

  1. Amazon River

  2. Dead Sea

  3. Yellow River

  4. Congo River
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A new species of fish, named Aphanius dispar, was discovered in the Dead Sea, known for its extremely acidic and saline waters.

Multiple choice

Which swimming stroke is known for its powerful and efficient propulsion through the water?

  1. Freestyle

  2. Backstroke

  3. Breaststroke

  4. Butterfly
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Freestyle, also known as front crawl, is the fastest and most efficient swimming stroke. It involves alternating arm movements and a flutter kick, allowing swimmers to generate maximum speed and distance.

Multiple choice

Which marine species is particularly vulnerable to overfishing due to its slow growth and late maturity?

  1. Tuna

  2. Salmon

  3. Cod

  4. Shark
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sharks are particularly vulnerable to overfishing due to their slow growth and late maturity, making them unable to recover quickly from population declines.

Multiple choice

What is the term used to describe the practice of fishing during the breeding season of a species?

  1. Ghost fishing

  2. Highgrading

  3. Discarding

  4. Spawning season fishing
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Spawning season fishing refers to the practice of fishing during the breeding season of a species, when they are most vulnerable and their populations are most susceptible to decline.

Multiple choice

What is the term used to describe the practice of using fishing gear that is not selective and catches a wide range of species, including non-target species and juveniles?

  1. Ghost fishing

  2. Highgrading

  3. Discarding

  4. Non-selective fishing
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Non-selective fishing refers to the practice of using fishing gear that is not selective and catches a wide range of species, including non-target species and juveniles.