Neco 2018 Biology Question 6

Practice essay / theory question 6 from the 2018 Neco Biology examination. This question covers excretion, urinary system .

Neco 2018 Biology Essay / Theory
Topics: excretion urinary system
Question 6 NECO • 2018 • BIOLOGY • essay
Neco 2018 Biology Question 6 diagram

The diagram shows a labelled human kidney with its major regions and a single nephron. The labels are: A – Renal cortex, B – Renal medulla, C – Renal pelvis, D – Ureter, E – Glomerulus, F – Bowman's capsule, G – Proximal convoluted tubule, H – Loop of Henle, I – Distal convoluted tubule, J – Collecting duct. Answer the following:

Question Parts

( a )
State the anatomical name represented by each label (A–J).
( b )
Describe the four processes involved in urine formation (filtration, reabsorption, secretion and excretion) and indicate which labelled part of the nephron is primarily associated with each process.
( c )
Explain how antidiuretic hormone (ADH) modifies the permeability of the collecting duct (J) and the consequent effect on urine concentration.
( d )
Compare the excretory system of a freshwater fish with that of the human, focusing on structural adaptations and mechanisms used to maintain water and ion balance.

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About This Question

This is Neco 2018 Biology Question 6. It is one of the essay questions from the 2018 Neco Biology examination.

The question covers excretion, urinary system .

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