Crustacean Biology and Ecology

The video tutorial explores various classes of crustaceans, focusing on their characteristics, habitats, and ecological significance. It covers Malacostraca, including orders like Stomatopoda, Isopoda, Amphipoda, Euphausiacea, and Decapoda, highlighting their diversity and adaptations. Other classes like Cephalocarida, Branchiopoda, and Remipedia are also discussed, emphasizing their unique features and roles in ecosystems.

Which class is the largest among the pancrustacean classes, excluding hexapoda?

• Branchiopoda

• Cephalocarida

• Remipedia

• Malacostraca

What is a unique feature of mantis shrimp?

• They can perceive a wide range of light wavelengths.

• They have a large dorsal shield.

• They are capable of cyclical parthenogenesis.

• They are known for their extensive fossil record.

What is the ecological role of terrestrial isopods?

• They are parasites of larger crustaceans.

• They are scavengers of dead plant matter.

• They are predators of small fish.

• They are primary producers in marine ecosystems.

How do amphipods differ from isopods?

• Amphipods are laterally flattened.

• Amphipods are known for their fossil record.

• Amphipods have a large dorsal shield.

• Amphipods are primarily terrestrial.

What is the significance of krill in marine ecosystems?

• They are the largest crustaceans.

• They are known for their colorful shells.

• They are a crucial part of the biological pump.

• They are top predators in the ocean.

Which order includes crustaceans commonly consumed by humans?

• Euphausiacea

• Decapoda

• Isopoda

• Stomatopoda

What is carcinization?

• The process of a crab evolving into a non-crab form.

• The process of a non-crab evolving into a crab-like form.

• The process of a lobster evolving into a crab-like form.

• The process of a shrimp evolving into a fish-like form.

Which class contains species known as horseshoe shrimp?

• Cephalocarida

• Branchiopoda

• Malacostraca

• Remipedia

What is a notable feature of the class Branchiopoda?

• They have a large dorsal shield.

• They are blind cave dwellers.

• They are known for their extensive fossil record.

• They are capable of cyclical parthenogenesis.

What is unique about the class Remipedia?

• They are the largest crustaceans.

• They are capable of cyclical parthenogenesis.

• They are known for their colorful shells.

• They are blind cave dwellers.