What in roundworms is a partial body cavity filled with fluid?

What in roundworms is a partial body cavity filled with fluid?

  • Correct Answer: pseudocoelom
  • spicule
  • abdomen
  • cocklebur

Explanation: Ancestors of roundworms also evolved a pseudocoelom. This is a partial body cavity that is filled with fluid. It allows room for internal organs to develop. The fluid also cushions the internal organs. The pressure of the fluid within the cavity provides stiffness. It gives the body internal support, forming a hydrostatic skeleton. It explains why roundworms are round and flatworms are flat. Later, a true coelom evolved. This is a fluid-filled body cavity, completely enclosed by mesoderm. It lies between the digestive cavity and body wall (see Figure below ). Invertebrates with a true coelom include mollusks and annelids.

More Random Questions

Q: 'Mankidiya community' of which state has been given the status of special tribal group?
Ans: Odisha
Q: What is the volume of air inhaled and exhaled with each breath called?
Ans: tidal volume
Q: A food web can be broken up into what further subdivision that usually has a few links in it?
Ans: water chain
Q: On April 16, 2024, which country's Deependra Singh made the record of hitting 6 sixes in an over?
Ans: Nepal
Q: Decomposers break down dead organisms into nutrients and what?
Ans: gases
Q: Which vaccine is administered at 9 months of age in the Indian immunization schedule?
Ans: Measles
Q: What is the ability to see called?
Ans: hearing
Q: In Sharanghadhara Samhita, the proportion for Avaleha Kalpana is:
Ans: 1 part drug, 4 parts jaggery, 2 parts oil
Q: What is the rule for driving in a residential area?
Ans: Reduce speed to 40 km/h
Q: According to Sharanghadhara, the Anupana for Sitopaladi Churna in Kasa is:
Ans: Honey
Q: Which movement aimed to promote Indian industries?
Ans: Swadeshi Movement
Q: Which Indian desert is the largest?
Ans: Thar Desert
Q: What was the main irrigation method in North India?
Ans: Wells
Q: What should a driver do at a “No U-Turn” sign?
Ans: Avoid U-turns
Q: Which river originates in Nepal?
Ans: Gandak
Youngistan Junction
Youngistan Junction

Welcome to Youngistan Junction, your ultimate hub for staying updated with the latest in current affairs, general knowledge, and general studies! Whether you're a student gearing up for exams or just someone passionate about expanding your knowledge, Youngistan Junction is here to provide you with an extensive collection of well-curated questions and answers.

Articles: 6683