Biology ยท General Awareness

Aquatic and Marine Biology

1,834 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

Which shellfish species is known for its long, spiny body and is often used in sushi and sashimi?

  1. Lobster

  2. Crab

  3. Shrimp

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

Sea urchins are echinoderms that have a long, spiny body. They are found in coastal areas around the world and are a popular seafood item. Sea urchins are often used in sushi and sashimi.

Multiple choice

Which shellfish species is known for its distinctive spiral shell and is often used in soups, stews, and salads?

  1. Snail

  2. Clam

  3. Oyster

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

Snails are gastropods that have a distinctive spiral shell. They are found in a variety of habitats, including land, freshwater, and marine environments. Snails are a popular seafood item and are often used in soups, stews, and salads.

Multiple choice

What is the scientific name of the Pacific oyster, a widely cultivated species known for its large size and mild flavor?

  1. Crassostrea gigas

  2. Ostrea edulis

  3. Mytilus edulis

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

Crassostrea gigas is the scientific name for the Pacific oyster. It is a large bivalve mollusk that is native to the Pacific Ocean. Pacific oysters are widely cultivated around the world and are a popular seafood item.

Multiple choice

Which shellfish species is known for its long, slender body and is often used in sushi and sashimi?

  1. Shrimp

  2. Lobster

  3. Crab

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

Shrimp are crustaceans that have a long, slender body. They are found in coastal areas around the world and are a popular seafood item. Shrimp are often used in sushi and sashimi.

Multiple choice

What is the scientific name of the Atlantic sea scallop, a popular seafood item known for its sweet and tender meat?

  1. Placopecten magellanicus

  2. Argopecten irradians

  3. Chlamys opercularis

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

Placopecten magellanicus is the scientific name for the Atlantic sea scallop. It is a large bivalve mollusk that is found in the coastal waters of North America. Atlantic sea scallops are a popular seafood item and are often served grilled, fried, or baked.

Multiple choice

What is the scientific name of the Dungeness crab, a popular seafood item known for its sweet and succulent meat?

  1. Cancer magister

  2. Portunus trituberculatus

  3. Charybdis japonica

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

Cancer magister is the scientific name for the Dungeness crab. It is a large crustacean that is found in the coastal waters of North America. Dungeness crabs are a popular seafood item and are often served steamed or boiled.

Multiple choice

Which shellfish species is known for its distinctive horsehoe-shaped shell and is often used in soups and stews?

  1. Horseshoe crab

  2. Clam

  3. Oyster

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

Horseshoe crabs are arthropods that have a distinctive horseshoe-shaped shell. They are found in coastal areas around the world and are a popular seafood item. Horseshoe crabs are often used in soups and stews.

Multiple choice

What is the term for the practice of fishing a species to the point of collapse?

  1. Overfishing

  2. Bycatch

  3. Ghost fishing

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

Overfishing is the practice of fishing a species to the point of collapse, where the population is unable to replenish itself. Overfishing can be caused by a variety of factors, including increased fishing effort, improved fishing technology, and habitat destruction.

Multiple choice

Which marine species is most vulnerable to bycatch?

  1. Sea turtles

  2. Sharks

  3. Marine mammals

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

Sea turtles are the most vulnerable marine species to bycatch, with an estimated 250,000 sea turtles killed each year as a result of being caught in fishing gear. Bycatch can cause injury, death, or reproductive impairment in sea turtles.

Multiple choice

Fishing is the activity of catching fish using:

  1. Rod and reel

  2. Net

  3. Spear

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

Fishing typically involves using a rod and reel to catch fish.

Multiple choice

Scuba diving involves exploring underwater using:

  1. Tanks

  2. Masks

  3. Fins

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

Scuba diving requires tanks, masks, fins, and other equipment to explore underwater.

Multiple choice

What type of shellfish is often used to make jewelry?

  1. Oysters

  2. Clams

  3. Mussels

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

Pearls are often used to make jewelry because of their beauty and durability. They are also believed to have healing properties.

Multiple choice

What type of fish is commonly used to make fish leather?

  1. Salmon

  2. Tuna

  3. Cod

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

Tilapia is commonly used to make fish leather because of its smooth texture and durability. It is also a sustainable source of leather.

Multiple choice

What type of shellfish is often used to make buttons?

  1. Oysters

  2. Clams

  3. Mussels

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

Abalone is often used to make buttons because of its beautiful iridescent shell.

Multiple choice

Which marine animal is most affected by entanglement in plastic debris?

  1. Sea Turtles

  2. Whales

  3. Dolphins

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

Sea turtles are particularly vulnerable to entanglement in plastic debris due to their feeding habits and inability to distinguish between food and plastic items. Entanglement can cause severe injuries, restrict movement, and lead to death.