Correct Answer: C. 1

Explanation

The price elasticity of supply = % change in quantity supplied / % change in price. When calculating the price elasticity of supply, economists determine whether the quantity supplied of a good is elastic or inelastic.

change in price = 10 - 15 = 5 change in quantity = 10 - 15 = 5 5

Correct Answer: C) Glomerulus

Correct Answer: D. poor developmental policies

Explanation

Nigeria's economic potential is constrained by many structural issues, including inadequate infrastructure, tariff and non-tariff barriers to trade, obstacles to investment, poor developmental policies, lack of confidence in currency valuation, and limited foreign exchange capacity.

Correct Answer: C. the transmission of political values , attitudes and opinions

Correct Answer: D. limited control in management by shareholders

Explanation

The owners of the business ( shareholders) have little or no say in the affairs of the business, while the people at the helm of affairs who are not the owners may not put in their best.

Explanation

(a) Differences between tactic and nastic movements in plants

(b) Examples of organisms that show

(i) Tactic movement

• Volvox
• Chlamydomonas
• Egulena
• earthworm
• tilapia

(ii) Nastic movement

• Morning glory
• Mimosa
• Pride of Barbados (Caesalpinia)
• Four-o-clock plant
• Morning flower
• sunflower
• Desmodium
• clover

(c)(i) Care of the skin

1. Eating balanced diet rich in vitamins A/B2/E
2. Engaging in regular exercise
3. Washing the skin with clean water and soap daily;
4. Drinking lost of water
5. Moisturising/rubbing the skin with lotion/cream
6. Avoilding excessive exposure to ultraviolent yars/radiation
7. Avoilding bleaching creams/harsh chemicals
8. Wearing clean clothes next to skin
9. Protect the skin against injury.

(ii) Stimuli to which the mammalian skin is sensitive

• Touch
• Pressure
• Heat
• Cold
• Pain
• Chemicals

(d) Effects of high temperature on terrestrial habitat

1. Causes high transpiration rate in plants
2. Plants wither/wilt
3. Leads to high rate of metabolism in both plants and animals
4. There is a high rate of decay of organic matter
5. Leads to high rate of growth; and shorter length of life cycle in toad/housefly
6. Makes poikilothermic animals to look for shelter from heat/hibernation
7. There is high rate of water loss in animals/sweating/perspiration
8. Leads to high incidence of bush fires
9. Migration/emigration

(e)(i) Courtship behaviour in animals

A type of behaviour/instinctive action in animals; that play an important role in attracting a compatible mate/ opposite sex; of the same species; for copulation/sexual reproduction

(ii) Courtship behaviours in animals

• Pairing
• Territoriality
• Seasonal migration
• Smell/release of attractive sex hormones/odour
• Display of prominent colour patterns
• Mating calls/croaking/vocal displays/sound signal
• Dancing/attractive movements.

(f) Examples of organisms that carry out holozoic mode of nutrition

• Goat
• rat
• lizard
• frog
• bird
• human
• any correctly named example; pitcher plants; sundew; bladder worths.

(g) Use of fingerprinting in crime detection

No two individuals have the same/identical pattern/contour of fingerprints/hence it is used for crime detection; fingerprints left behind by a criminal at the scene of a crime/door/table/weapon/on victim; provide a valuable clue in the detection and subsequent arrest of a criminal; the fingerprints left on the scene of crime are photographed; and the crime suspect's fingerprints are taken and compared with the fingerprint at the scene of crime; if it matches then the suspect is the criminal.

Correct Answer: B. Soil creep

Correct Answer: A. raise important questions outside the agenda

Correct Answer: A) vocal sacs

Explanation

In Biology, we have different types of animals, and one of them is the toad. Toads are amphibians that are found in different places around the world. The question here is asking us to identify the difference between a male and female toad. The options provided are vocal sacs, shorter hind limbs, longer forelimbs, bulging eyes, and nitrating membrane. The correct answer is option A, which is vocal sacs. Vocal sacs are found in male toads, which they use to make mating calls during the breeding season. Female toads do not have vocal sacs, so they cannot make mating calls. In summary, the difference between male and female toads is that male toads have vocal sacs, while female toads do not. To learn more about the anatomy and characteristics of toads, please read the relevant sections of the recommended textbooks.

Correct Answer: D. Herbert Macaulay