Past Questions And Answers
Petrochemistry is an example of
- A. applied chemistry
- B. Biochemistry
- C. Pure chemistry
- D. Environmental chemistry
The lac operon is an inducible operon. Which of the following best describes this type of operon?
- A. The operon is usually on and has an active repressor
- B. The operon is usually on and has an inactive repressor
- C. The operon is usually off and has an inactive repressor
- D. The operon is usually off and has an active repressor
(a) In a tabular form, briefly discuss the following plant nutrients: (i) Potassium; (ii) Phosphorus; (iii) Calcium. Under the following headings: (i) form in which it is absorbed; (ii) three functions; (iii) one deficiency symptom.
(b) Give two examples of nitrogenous fertilizers.
View Discussion (0)WAEC 2000 THEORY(a) State eight functions of water in livestock management (b) List eight essential mineral elements required in animal nutrition (c) State four functions of the mineral elements in the body of animals.
View Discussion (0)WAEC 1993 THEORYA trade in which many countries exchange goods and services is called?
- A. bilateral trade
- B. entrepot trade
- C. economic union
- D. multilateral trade
The sum of the angles of regular polygon is 2520o. How many sides does the polygon have?
- A. 20
- B. 18
- C. 17
- D. 16
The speed of sound in air is 330ms-1. How far from the centre of a storm is an observer who hears a thunder clap 2s after the lightning flash? (Neglect the time taken by light to travel to the observer)
- A. 1320m
- B. 660m
- C. 600m
- D. 330m
The type of sentence that contains one independent clause and one or more dependent clause is _____
- A. compound
- B. complex
- C. compound-complex
- D. multiple
the worth of a life assurance policy before its maturity date is?
- A. residual value
- B. surrender value
- C. accrued value
- D. assured value
(a) Discuss the cultivation of cassava under the following headings: (i) soil requirements; (ii) spacing (iii) one disease; (iv) one pest. [5 marks]
(b) Differentiate between natural pasture and artificial pasture. [2 marks]
(c). Explain the term disease as used in crop production. [2 marks]
(d) State Mendel's law of independent assortment of genes. [2 marks]
(e) Explain the term regeneration as a forest management practice. [2 marks]
(f) State five effects of deforestation. [5 marks]
View Discussion (0)WAEC 2014 THEORY
