The excretory system of planaria is called:
Correct answer: B. Protonephridium
- A. Metanephridium
- B. Protonephridium
- C. Nephron
- D. Nephridium
Explanation
A protonephridium is a simple excretory system found in flatworms, consisting of tubules with flame cells that remove metabolic waste from the body cavity and expel it outside.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
Practise Homeostasis
698 free Homeostasis MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Homeostasis questions
Mango plant is:
The more concentrated environment is termed as:
In the diagram showing the urinary system of human, label 'A' represents the adrenal cortex.It secretes a hormone that:
In the urea cycle, one molecule of ammonia and one molecule of CO2 combine with one molecule of ornithine to form:
Unlike an earthworm, metanephridia in mammalian nephron:
Which process in the nephron is least selective?