Correct Answer: D. Tirmidhi

Correct Answer: A. were not national in outlook

Explanation

(a)(i) Excretory organs found in living organisms: Lung, kidney, skin, liver and nephridia

(ii) Lungs - man, Kidney - man, Skin - man, Liver - man, Nephridia - earth worm, Contractile vacuole - paramecium, Stomata / Lenticel - plants, Flame cells - tape worm, Malpigian tubules - insects.

(b)(1) Two ways in which the excretory organ of earth worm is similar to that of mammals are:

(1) Both possess structure for filtering excretory products.

(2) Each is well supplied with blood.

(ii) Differences between mammals and earth worm:

(c) Mechanism of opening and closing of the stomata:Each stoma is enclosed by guard cells. Guard cell has chloroplast and is also elastic. During photosynthesis, sugar is formed and this increases the concentration of cell. sap. Guard cell receives water by means of osmosis and becomes turgid. This makes the stoma to open. During the night, sugar in the guard cell is converted to starch. This makes the osmotic concentration of guard cell to reduce. Water is lost lay the guard cells through osmosis to the surrounding. This makes the guard cell to be flaccid, hence stoma closes.

Explanation

Major functions of Civil/Public Service Commission:

(i) Recruitment: The commission is responsible for recruiting people into the civil/public service through competitive examination and various interviews.

(ii) Promotion: It is responsible for the promotion of top civil servants from one class to the other particularly the promotion of Executive officers to the Administrative cadre.

(iii) Training and scholarship: The commission organizes scholarship and training schemes for the civil servants to broaden their knowledge and to improve their efficiency.

(iv) Transfer of civil/public servants is done by the commission especially from one ministry to the other to broaden their knowledge.

(v) Retirement: The commission has the power to enforce the retirement of civil/public servants when due for retirement.

(vi) Discipline: The commission has power to take disciplinary action against any civil servant found guilty of misconduct. It can issue query, suspend or even punish any erring official.

(vii) It sets up panels to look into grievances of workers including their remuneration and conditions of service.

(viii) It appraises, monitors and evaluates the performance of ministries and departments.

(ix) It advises government on technical matters affecting public service.

Correct Answer: D. clearing and stumping of site

Correct Answer: B. 6

Correct Answer: B. -1, 2

Correct Answer: B. commission

Correct Answer: A. x = \(\frac{-3}{2}\) or 2

Explanation

\(2x^2 - x - 6\) = 0

\(2x^2 - 4x + 3x - 6\) = 0

2x(x - 2) + 3(x - 2) = 0

(2x + 3) (x - 2) = 0

Either; 2x + 3 = 0 or x - 2 = 0

x = \(\frac{-3}{2}\) or x = 2

Correct Answer: A. 3