Neco Model Questions Vol1 2023 Biology Question 5

Practice essay / theory question 5 from the 2023 Neco Model Questions Vol1 Biology examination. This question covers Transport .

Neco Model Questions Vol1 2023 Biology Essay / Theory
Topic: Transport
Question 5 NECO_MODEL_QUESTIONS_VOL1 • 2023 • BIOLOGY • essay

Plants and animals have evolved various mechanisms to transport substances that are essential for their survival and growth.

Question Parts

( a )
Explain in detail the three major mechanisms by which water moves from the soil to the leaves of a typical dicotyledonous plant.
( b )
A student places three equal-sized potato discs in 0 % (distilled water), 10 % and 20 % (w/v) sucrose solutions for 30 minutes. The initial mass of each disc is 5.00 g. After the experiment the masses are recorded as follows: 0 % – 5.80 g, 10 % – 5.10 g, 20 % – 4.55 g. (i) Calculate the percentage change in mass of each disc. (ii) Interpret the results in terms of the direction of water movement and the concept of osmotic potential.
( c )
Compare active transport and facilitated diffusion, giving one specific example of each that occurs in animal cells.
( d )
Discuss how temperature influences the rate of diffusion and active transport in living tissues.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is Neco Model Questions Vol1 2023 Biology Question 5. It is one of the essay questions from the 2023 Neco Model Questions Vol1 Biology examination.

The question covers Transport .

View More Neco Model Questions Vol1 2023 Biology Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support