[Campbell Biology P.759] Based on the provided text, which of the following statements accur... | Practice Question

Based on the provided text, which of the following statements accurately distinguishes krill from barnacles?

  • A: Krill are sessile filter feeders, while barnacles are planktonic.
  • B: Barnacles feed by extending appendages, whereas krill are primarily consumed by whales.
  • C: Krill have a hardened cuticle containing calcium carbonate, unlike barnacles.
  • D: Barnacles are used as agricultural fertilizer, while krill are predators of small animals.

Explanation

The text states that 'Barnacles feed by extending appendages from their shell to strain food from the water' and 'A major food source for baleen whales including blue whales, humpbacks, and right whales , krill are now being harvested in great numbers by humans for food and agricultural fertilizer.'