Transport Practice Questions
NECO (Nigeria) · NECO Biology · 150 free MCQs with instant results and detailed explanations.
150
Total
45
Easy
75
Medium
30
Hard
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Sample Questions from Transport
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the primary function of xylem in plants?
A.
Transport water and minerals from roots to leaves
B.
Transport sugars from leaves to roots
C.
Store nutrients
D.
Absorb sunlight
Show Answer & Explanation
Correct Answer: A
Xylem's primary role is to transport water and dissolved minerals from the roots to the leaves, facilitating photosynthesis and other vital processes.
Q2
Easy
Which process describes the movement of water across a semipermeable membrane?
A.
Active transport
B.
Diffusion
C.
Osmosis
D.
Facilitated diffusion
Show Answer & Explanation
Correct Answer: C
Osmosis is the specific term for the movement of water molecules through a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
Q3
Easy
What is the primary function of the xylem in plants?
A.
Transporting water and minerals from roots to leaves
B.
Transporting sugars produced in photosynthesis
C.
Storing nutrients in the plant
D.
Protecting the plant from herbivores
Show Answer & Explanation
Correct Answer: A
The xylem's primary role is to transport water and dissolved minerals from the roots to the rest of the plant, particularly the leaves where photosynthesis occurs.
Q4
Medium
What is the primary function of xylem in plants?
A.
Transport of water and minerals
B.
Transport of food
C.
Photosynthesis
D.
Storage of nutrients
Show Answer & Explanation
Correct Answer: A
Xylem's main role is to transport water and dissolved minerals from the roots to the rest of the plant, supporting its growth and physiological functions.
Q5
Medium
Which process describes the movement of substances from an area of higher concentration to an area of lower concentration?
A.
Osmosis
B.
Diffusion
C.
Active transport
D.
Facilitated diffusion
Show Answer & Explanation
Correct Answer: B
Diffusion involves the passive movement of molecules from a region of higher concentration to a region of lower concentration until equilibrium is reached, making it a fundamental transport mechanism.
Q6
Medium
What is the result of the process of transpiration in plants?
A.
Cooling effect on leaves
B.
Increased soil moisture
C.
Nutrient uptake
D.
Stomatal closure
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Correct Answer: A
Transpiration is the process of water vapor loss from the plant's surface, particularly the leaves, which has a cooling effect and helps regulate temperature.
Q7
Medium
Which of the following factors does NOT affect the rate of transpiration in plants?
A.
Humidity
B.
Wind speed
C.
Soil temperature
D.
Light intensity
Show Answer & Explanation
Correct Answer: C
While humidity, wind speed, and light intensity significantly influence transpiration rates, soil temperature does not have a direct effect on the rate of transpiration.
Q8
Hard
Which of the following processes primarily governs the movement of water and solutes in plants through the xylem?
A.
Osmosis
B.
Transpiration
C.
Active Transport
D.
Diffusion
Show Answer & Explanation
Correct Answer: B
Transpiration is the primary process that drives the movement of water and solutes through the xylem in plants. As water evaporates from leaf surfaces, it creates a negative pressure that pulls more water upward from the roots.
Q9
Hard
In a hypertonic solution, what will happen to a red blood cell placed in it?
A.
It will swell and burst.
B.
It will remain unchanged.
C.
It will shrink.
D.
It will absorb excess nutrients.
Show Answer & Explanation
Correct Answer: C
When a red blood cell is placed in a hypertonic solution, the concentration of solutes outside the cell is higher than inside. Water moves out of the cell to balance solute concentration, causing the cell to shrink.
Q10
Hard
In plants, which type of transport system primarily facilitates the movement of water and nutrients from the roots to the leaves?
A.
Phloem
B.
Xylem
C.
Cortex
D.
Cambium
Show Answer & Explanation
Correct Answer: B
The xylem is the vascular tissue in plants responsible for the conduction of water and dissolved minerals from the roots to the rest of the plant, especially leaves. Phloem, on the other hand, is responsible for the transport of organic nutrients.
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Transport — NECO (Nigeria) NECO Biology Practice Questions Online
This page contains 150 practice MCQs for the chapter Transport in NECO (Nigeria) NECO Biology. The questions are organized by difficulty — 45 easy, 75 medium, 30 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.