Neco Model Questions Vol1 2021 Biology Question 6

Practice essay / theory question 6 from the 2021 Neco Model Questions Vol1 Biology examination. This question covers Kidney structure and function, Nephron processes, Hormonal regulation of urine concentration, Insect excretory adaptations .

Neco Model Questions Vol1 2021 Biology Essay / Theory
Topics: Kidney structure and function Nephron processes Hormonal regulation of urine concentration Insect excretory adaptations
Question 6 NECO_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • essay

Excretion removes metabolic waste products and helps maintain internal homeostasis. Answer the following questions, providing detailed explanations and appropriate biological terminology.

Question Parts

( a )
Describe the structure of a mammalian nephron and explain where the processes of filtration, reabsorption and secretion occur. Indicate the direction of fluid flow through each region.
( b )
Explain how antidiuretic hormone (ADH) influences water reabsorption in the collecting duct and discuss the resulting effect on urine concentration and volume.
( c )
Compare the excretory system of mammals with that of a terrestrial insect (e.g., a beetle). Highlight at least two structural or functional adaptations each organism has evolved to conserve water in a dry environment.

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About This Question

This is Neco Model Questions Vol1 2021 Biology Question 6. It is one of the essay questions from the 2021 Neco Model Questions Vol1 Biology examination.

The question covers Kidney structure and function, Nephron processes, Hormonal regulation of urine concentration, Insect excretory adaptations .

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