2 Answers

The most eminent unit in terms or water conservation is…

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BIOLOGY

Use the diagram to answer the question that follow…

The excretory organ of an earthworm is represented by…

The most eminent unit in terms or water conservation is represented by…

A. IV

B. I

C. III

D. II

QUICK ANSWER…

D

DETAILS…  

Water conservation involves the careful use and economical preservation of water. In this question, we are required to identify the structure that conserves more water.

Now for the right answer to the above question:

  1. IV, is identified as malpighian tubule, an organ of excretion in insects which has lower water content when compared to the more advanced kidney. so, A is incorrect.
  2. I, is identified as flame cell, an organ of excretion in flatworms. This has less water content when compared to the kidney. B is also incorrect.
  3. III, is identified as nephridium, an excretory organ for earthworm, a lesser water containing organ. So, C is also incorrect.
  4. D is correct; the structure labelled II is the kidney, it is associated with more water content, and therefore retains more quantity of water than other structures.

QUICK ADVICE…

You may please note that:

  • Water conservation here has to do with ability to store and contain more water.

Use the questions and answers session to raise further questions on this topic…

/ culled from 2017 JAMB-UTME biology question 19 /

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