Past Questions And Answers
The diagrams below are illustrations of forms in which a particular group of organisms exist. Study them and answer the question.
Which group of organisms is illustrated?
- A. protozoa
- B. viruses
- C. fungi
- D. bacteria
Find the sum of the first twenty terms of the progression log a, log a2, log a3.....
- A. log a20
- B. log a21
- C. log a200
- D. log a210
Opening stock.................N1000 Closing stock.................N9000 Purchases.....................N14,000 The average stock is?
- A. N2000
- B. N3000
- C. N5000
- D. N6000
a. Explainbrieflythe importance of the following factors and organisms in the nitrogen cycle
(i)lightning; [3 marks]
(ii)Nitrosomonas; [2 marks]
(iii)Azotobacter. [2 marks]
b. Name the excretory organ in:
(i) insects: [1 mark]
(ii) earthworm.
c. Define
(i) hepatitis; [4 marks]
(ii) kidney stones [4marks]
d. (i) Statethreeeffects of lack of sense receptors in the skin to humans. [3 marks]
(ii) Listthreelayers of the epidermis in the skin of humans. [3 marks]
e. (i) What ismetamorphosis? [2 marks]
(ii) State the type of metamorphosis exhibited byeachof the following insects listed in the table below.
| Insect | Type of metamorphosis |
| Grasshopper | |
| Cockroach | |
| Butterfly | |
| Mosquito | |
| Housefly |
If 3p = 4q and 9p = 8q - 12, find the value of pq.
- A. 12
- B. 7
- C. -7
- D. -12
Most industries in the West African sub-region are
- A. large-scale
- B. small-scale
- C. medium-scale
- D. capital intensive
Fill each gap with the most appropriate option from the lists provided.
The operations of the bank ........ not ...... cottage and small-scale industries?
- A. does /covered
- B. does / cover
- C. did / covered
- D. do /cover
Lodging in crops is caused by excess supply of
- A. potassium
- B. sulphur
- C. iron
- D. nitrogen
Tooth decay is usually caused by___________
- A. undigested and absorbed food
- B. eating a limited amount of sweetened food.
- C. the bacteria
- D. eating a lot of proteinous foods
Fruits should be harvested at the appropriate time in order to
- A. prevent them from brushing
- B. minimize their sugar content
- C. reap increased fruiting
- D. ensure good quality produce