We appreciate your visit to 11 Which phylum is characterized by choanocytes that create a current to pull in food A CnidariaB UrochordataC PlatyhelminthesD Porifera12 On which organism below might. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
Let's go through each of the questions and provide the correct answers:
Which phylum is characterized by choanocytes that create a current to pull in food?
- The correct answer is D. Porifera. Phylum Porifera, commonly known as sponges, contains choanocytes (or collar cells), which have flagella that beat to create a water current, allowing these organisms to filter feed by pulling in food particles from the water.
On which organism below might you find setae?
- The correct answer is A. Earthworm. Setae are tiny bristle-like structures that can be found on the bodies of earthworms. They help these organisms to grip surfaces and assist in their movement through soil.
Which of the following worm phyla has a tough outer cuticle that undergoes ecdysis?
- The correct answer is A. Nematoda. Nematodes, or roundworms, have a tough outer cuticle that is periodically shed or molted in a process known as ecdysis. This allows the organism to grow.
What is the name for reproduction in which males and females both emit gametes (sex cells) into the water and egg and sperm meet in the water column?
- The correct answer is C. Broadcast spawning. This form of reproduction is common in marine environments where many marine organisms release their eggs and sperm into the water, allowing fertilization to occur externally.
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