Correct Answer: C) muscles or glands which work in response to the stimulus received from the motor nerves.

Explanation

The question is asking about effectors in the body. Effectors are muscles or glands that work in response to the stimulus received from the motor nerves. In other words, effectors are parts of the body that respond to signals from the nervous system by either contracting (in the case of muscles) or secreting (in the case of glands). Option A states that effectors are only muscles. While muscles are a type of effector, this option is not completely correct as it does not include glands which are also effectors. Option B states that effectors are only glands. Again, this option is not completely correct as it does not include muscles which are also effectors. Option C is the correct answer as it includes both muscles and glands as types of effectors. Option D is incorrect as efferent neurons are not effectors. It is important to note that effectors are an important part of the nervous system and are responsible for carrying out the actions that are initiated by the nervous system. Examples of effectors include skeletal muscles, smooth muscles, and glands. To learn more about the nervous system and its components, please read the relevant sections of the recommended textbooks.

Correct Answer: C. photosynthesis in plants

Correct Answer: D. 449

Correct Answer: B. Nigeria Export Promotion council

Explanation

< RPQ = 50° + 75° = 125°

By cosine rule,

\(|QR|^{2} = |RP|^{2} + |PQ|^{2} - 2(|PR|)(|PQ|) \cos 125°\)

= \(90^{2} + 50^{2} + 2(90)(50) \cos 55°\)

= \(8100 + 2500 + 9000 \times 0.5736\)

= \(10600 + 5162.4\)

\(|QR|^{2} = 15762.4\)

\(|QR| = \sqrt{15762.4} = 125.548km\)

(b) By Sine rule,

\(\frac{RQ}{\sin 125°} = \frac{PR}{\sin <PQR}\)

\(\frac{125.548}{\sin 125°} = \frac{90}{\sin < PQR}\)

\(\sin < PQR = \frac{90 \times 0.8192}{125.548}\)

\(\sin < PQR = 0.5782 \implies < PQR = \sin^{-1} (0.5872)\)

= \(35.96°\)

Bearing of R from Q = 180° + 75° + 35.96° = 290.96°\)

\(\approxeq 291°\)

Correct Answer: D. baptism

Explanation

(a) Diagram showing some organs of mammalian gut Title (T)

(b)(i) Two diseases of the liver:

• Liver cirrhosis
• Amoebic liver abscess
• Hepatitis
• Cancer/tumor of the liver
• Gall stones.

(b)(ii) Effects of liver diseases on humans:

(i) Weakness and tiredness

(ii) Jaundice/yel-lowish eye/skin

(iii) (Slight) fever

(iv) Oedema/ swollen abdomen/accumulation of fluid in the abdomen

(v) High blood pressure

(vi) Loss of weight

(vii) Abdominal pain

(viii) Loss of apetite

(ix) Headache

(c) Deficiency Symptoms Vitamin A:

• Night blindness /poor vision
• Colds/bronchitis
• Dry scaly skin.

Vitamin C:

• Swollen joints/scurvy/bleeding gums/sore mouth
• low resistance to infection
• dental disorders.

Vitamin K: - Excessive bleeding/haemorrhage of wounds/inability of blood to clot.

Correct Answer: D. preventing adultery

Correct Answer: B. pancreas

Correct Answer: B. power

Explanation

power is the ability to influence or outright control the behavior of people. An authority held by a group within a society that allows for the administration of public resources and implement policies for society. Power may be acquired as a means of governmental direction or in opposition to a government group.