Explanation

(a) Factors that affect type of soil formed at a place: (i) Parent material. (ii) Climate (iii) Topography/relief (iv) Time (v) Biotic factors (vegetation, living organisms, human influence).

(b) Agricultural and non-agricultural uses of land: (i) Agricultural uses of land: Crop production. Pasture establishment. Forestry. Wildlife and game reserve. Fisheries. Animal/ livestock production, Bee keeping, snail farming

(ii) Non-agricultural uses of land: Housing, transport network, Mining, industry, Social infrastructure (schools, markets, stadia, hospitals, etc)

(c) Functions and Deficiency Symptoms of nutrients in crops:

Nitrogen: Functions:

-Promotes vigorous vegetative growth of crops.

-It is responsible for the green colouration of leaves which is important for photosynthesis.

-It is a constituent of plant protein.

-Promotes good root, stem and leaf formation at the expense of fruit and tuber formation.

-It regulates the utilization of potassium and phosphorus by crops.

-It increases the succulence in leafy and fruit vegetables.

-Promotes synthesis of plant enzymes and auxins.

Deficiency symptoms:

(i) Stunted growth. (ii) Restricted root formation. (iii) Leaves turn yellow/yellowish green because of lack of chlorophyll/older leaves turn yellow. (iv) Premature leaf-drop. (v) Stems of crops are weakened especially in cereals. (vi) Premature flowering and fruiting of crops.

(ii) Potassium:

Functions:

- Potassium is an important constituent of plant tissues.

-Aids synthesis of carbohydrate.

- Activates various plant enzyme reactions.

- Promotes development of young plants.

- Necessary for neutralization of organic acids in plants.

- It is associated with stomata movement, hence influences water relationship within the plant.

- Helps in nitrate uptake from the soil.

- Essential for tuber formation.

- Essential for root growth.

-Aids in disease resistance.

- Provides resistance against lodging in plants.

- Neutralises organic acids in plants.

Deficiency symptoms: (i) Premature loss of leaves. (ii) Brown colour at margin of leaves. (iii) Weak stem development/susceptible to lodging. (iv) Delayed growth. (v) Mottling, curling and spotting of leaves. (vi) Results in stunted plants with short internodes.

(d) Ways in which soil structure is important in agriculture:

(i) Determines the number of pores in soil/aeration.

(ii) Determines water-holding capacity of soil.

(iii) Determines ease at which roots penetrate the soil.

(iv) Influences the extent of soil erosion.

(v) Determines the survival of micro-organisms.

(vi) Influences Cation Exchange Capacity (CEC).

(vii) Affects the performance of agricultural operations such as tillage, irrigation.

(viii) Supports the growth of crops.

(ix) Improves water percolation and infiltration.

(x) It influences fertility of the soil.

(xi) Promotes germination of seed.

Correct Answer: B) Output

Explanation

When a device is categorized as an Input, it means it is used to enter data into a computer system. Examples include a keyboard, mouse, and scanner. Output devices, on the other hand, are used to display or print information from a computer. Examples of output devices include printers, monitors, and speakers.

Therefore, since printers produce a hard copy of electronic documents, they are categorized as output devices.

It is important to note that printers come in different types and sizes, such as inkjet, laser, and 3D printers. Each type of printer has its unique way of printing and its specific uses.

In conclusion, the correct answer to the question is Option B: Output

Correct Answer: A. 32

Explanation

Reacting force - Weight = Net force

R = W + ma = mg + ma

480 = 10p + 5p

480 = 15p

p = 32 kg

Correct Answer: A. To aid in enzyme function

Correct Answer: C) financial accounting

Explanation

(a) X = Male (2275) + Female (2725) 5000

Y = Total - Female = 7500 - 4265 = 3235

Z = Total - Male = 6000 - 3250 = 2750

(b) Total population:

10 and above: 4,000

11 - 14 5,000

15 - 35 2,500

36 - 64 7,500

65 & above6,000

Total25,000

(c) Females of 14 years and below = 2650 + 2725 = 5375

Males of 14 years and below = 1350 + 2275 = 3625

Difference between the population of male and female aged 14 and below = 5375 - 3625 = 1750

(d) Percentage of population aged 14 years and below:

Female aged 14 years and below plus male aged 14 years and below. 5375 + 3625 = 9000 or 4000 + 5000 = 9000

= \(\frac{9000}{25000} \times \frac{100}{1}\) = 36%

(e) Dependency ratio =

Population of Less than 14 years +population of more than 65 years

population of 15 - 35 + population of 36 - 64 years

= \(\frac{9000 + 6000}{2500+7500} = \frac{15,000}{10000}\) = \(\frac{3}{2}\) = 3:2

Correct Answer: B. per capita income

Correct Answer: C. credit sale

Explanation

A credit sale is a sale in which the customer does not pay in full at the time of purchase, but agrees to pay later. The seller transfers the ownership of goods or services to the customer and expects to receive payment in the future.

Correct Answer: B. some choreographic skill

Correct Answer: B. confused