1989 WAEC Biology past questions and answers

JAMB CBT App

Study offline with EduNgr JAMB CBT app that has so many features, including thousands of past questions, JAMB syllabus, novels, etc.

Install The App





1
Which of the following structures is responsible for osmoregulation?

A I

B II

C III

D IV



Correct Option: B


We're working to add a detailed solution for this question


2
Excretion is carried out through the structure labelled

A I

B III

C IV

D V



Correct Option: D


We're working to add a detailed solution for this question


3
The part labelled VII is made up of

A carbohydrates

B lipid materials

C waste materials

D protein materials



Correct Option: B


We're working to add a detailed solution for this question


4
Below is a List of the levels of organization in organisms.
i. Tissue ii. System ii. Cell iV. organ The correct sequence of the levels in an increasing order of complexity is

A I,II,III

B lll, I, l\/, ll

C lll, IV, l, ll

D lV, lll, I, ll



Correct Option: B


We're working to add a detailed solution for this question





5
Below is a List of the levels of organization in organisms.
i. Tissue ii. System ii. Cell iV. organ Which of the following organelles is used for locomotion in Paramecium?

A pseudopodium

B Trchocyst

C Cilium

D pellicle



Correct Option: C


We're working to add a detailed solution for this question


6

Which of the following is not true of the nucleus of a living cell? It contains

A chromosome

B Nucleolus

C nucleoplasm

D chromatids



Correct Option: E


We're working to add a detailed solution for this question


7
The cell membrane consists of

A carbohydrates and lipids

B vitamins and proteins

C lipids and proteins

D water and sugar



Correct Option: C


We're working to add a detailed solution for this question


8
Which of the following is not likely to be found in the cell of a ripe tomato fruit?

A plastids

B Chlorophyll

C Cellulose cell wall

D Mitochondrion



Correct Option: B


We're working to add a detailed solution for this question





9
Which of the following constitutes the main internal tissue of a leaf?

A Cuticle

B Mesophyll

C Vascular tissue

D Lower epidermis



Correct Option: B


We're working to add a detailed solution for this question


10
Four cells with osmotic potential equivalent to that of 3% salt solution were immersed respectively in solutions
of different concentrations labeled as follows: I = 4% salt solution; II = 6% salt solution III = 1% salt solution;
IV = 10% salt solution; V = 5% salt solution. Which of the solutions will cause an increase in osmotic
pressure within the cell?

A I

B II

C III

D IV



Correct Option: C


We're working to add a detailed solution for this question




JAMB CBT APP

EduNgr JAMB CBT app that has thousands of past questions and answers, JAMB syllabus, novels, etc. And works offline!


Install App