Correct Answer: D. lions,elephants and leopards

Correct Answer: B. itinerant trading

Explanation

Itinerant means traveling from place to place. Itinerant retailers have no fixed place of business. They move from place to place for selling their goods to the consumers. Itinerant sell in small quantities. They invest a very small amount of capital.

Correct Answer: B. Waraqah b. Nawfal

Correct Answer: C. stand up to

Explanation

(a)(i) Meaning of natural pasture: This is a naturally occuring area of land containing grasses and legumes used for feeding livestock such as cattle, sheep and goats.

(ii) Characteristics of natural pastures in West Africa:

-Generally found on flat land.

-The area is usually covered with grasses and legumes.

-Generally the pasture is of low quality.

-Ability to regenerate rapidly.

-Ability of the grasses and legumes to withstand pests.

-Ability of the grasses and legumes to withstand disease outbreak.

-It contains obnoxious grasses and legumes.

-Ability to withstand trampling.

-Ability of the grasses and legumes to withstand drought.

(b) Discussion on root-knot disease of tomato:

(i) Causal organism: - Rootknot nematode/ Meloidogyne spp.

(ii) Mode of Transmission:

- Nematodes are soil borne so are transmitted through soil movement and run-off water.

-Through vegetative planting materials/transplanting of seedlings.

-Through contaminated farm tools and equipment.

(iii) Symptoms:

- Enlargement of certain cells of the roots in the form of knots.

-Retarded growth.

(iv) Prevention and control measures:

- Crop rotation.

- Use resistant varieties.

- Use nematicides such as furadan.

- Use ofAfrican marigold (biological control).

- Heavy doses of organic matter application.

- Soil sterilization.

(c) Distinguish between grafting and budding in plant propagation: In grafting, the scion contains more than one bud, whereas in budding only one bud is used as scion. (d) Uses of sugarcane: (i) Production of molasses. (ii) Manufacture of sugar. (iii) Manufacture of ethanol, acetone, citric acid, glycerol, etc. (iv) Wastes as animal feed. (v) Production of bargasse for fuel and animal feed. (vi) Used as substrate for the production of brewers and bakers yeast (Torulopsis utilis). (vii) Production of a high protein food yeast from molasses. (viii) Used for medicinal purposes.

Correct Answer: B. 72°

Explanation

\(a . b = |a||b| \cos \theta\)

\(\begin{pmatrix} 13 \\ 1 \end{pmatrix}. \begin{pmatrix} 1 \\ 4 \end{pmatrix} = 13 \times 1 + 1 \times 4 = 13 + 4 = 17\)

\(17 = (\sqrt{13^{2} + 1^{2}})(\sqrt{1^{2} + 4^{2}}) \cos \theta\)

\(17 = (\sqrt{170})(\sqrt{17}) \cos \theta\)

\(\cos \theta = \frac{17}{17\sqrt{10}} = \frac{\sqrt{10}}{10} = 0.3162\)

\(\theta = \cos^{-1} 0.3162 = 72°\)

Correct Answer: C. 20

Correct Answer: B. 1.38m

Explanation

\(\lambda\) = \(\frac{v}{f} = \frac{352}{256}\)

= 1.38

Correct Answer: B. Council of Ministers

Explanation

Some countries adopt unitary system of government because of the following factors or reasons:

(i) The countries are small in terms of territory and population.

(ii) They are relatively homogeneous and there is absence of marked ethnic inequalities.

(iii) They have limited skilled personnel and economic resources.

(iv) They have identical political culture and history, i.e., common historical and political experience in administration.

(v) They have the desire for the preservation of national unity or identity and values.

(vi) Unitary system of government is simple and cheap to operate.

(vii) It also facilitates quick decision-making.