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Hello Guyssss @pojokrolive is here with an interview with Millicent 🥹❤️🔥…..it’s going to be interesting and interactive….Don’t Miss‼️ Date:Saturday ,21st September ,2024 On @pojokrolive Send all your questions to @Pojokrolivebot

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### Questions based on Fig. 2: 1. Name the group of crops to which the crop labeled C belongs:    - C: This looks like a tuber (possibly a sweet potato or cassava). It belongs to root crops. 2. Give one characteristic feature of the crop labeled C:    - Root crops like C store nutrients in their enlarged underground storage organs (tubers). 3. Describe damage from the crop pest labeled D:    - D appears to be a rodent (like a rat). Rodents damage crops by gnawing on roots, tubers, and stems, causing direct crop loss and contamination. 4. State one method of controlling the pest labeled D:    - Rodent control can be done by using traps or poison baits. Alternatively, physical barriers like fencing can be used to prevent access to crops. 5. Give two ways in which the crop labeled D can be propagated by tubers:    - Tubers can be propagated by:      - Cutting the tuber into pieces, each containing at least one eye (bud), and planting them.      - Direct planting of whole tubers in the soil

### Questions based on Fig. 1: 1. Name each of the items labeled I, II, III, IV, and V:    - I: Grafting knife or cutting tool    - II: Rootstock (part of the plant that provides the root system)    - III: Scion (the plant section that will be grafted onto the rootstock)    - IV: Wound healing band or grafting tape (used to secure the graft union)    - V: Grafted plant 2. State one observable feature for the stages A1, A2, B1, and B2:    - A1: Clean cut made on both rootstock and scion, preparing for grafting.    - A2: Alignment of the cambium layers of rootstock and scion.    - B1: Proper wrapping of the graft with a healing band or tape.    - B2: Successful healing of the graft union with no visible gaps. 3. Name each of the methods of propagation illustrated in A and B:    - A: Wedge grafting (A method of grafting where a wedge-shaped cut is made in both scion and rootstock.)    - B: Whip grafting (This involves making diagonal cuts on both scion and rootstock and tying them together.) 4. State two precautions to be taken in the method labeled A:    - Ensure that the cuts made on the scion and rootstock are clean and precise to allow proper fusion.    - Properly align the cambium layers of the scion and rootstock to enhance the chances of a successful graft. ---

1. B. Vital body processes 2. C. Condenser 3. A. 2-chloro-3-methylbut-2-ene 4. A. Ginger and fern 5. C. Covalent 6. A. Bacteria 7. A. Broilers 8. B. Graphite 9. A. 2.5 Ω 10. A. Flute 11. B. Insect attack 12. B. I and III only 13. C. Ciliary muscle 14. B. I and III only 15. D. Urea 16. C. Nucleons 17. C. Reducing sugars 18. A. Size 19. D. Ribosome 20. B. Carbon, hydrogen, and nitrogen 21. B. Dehorning 22. A. Mg(HCO₃)₂ 23. A. 2 24. B. Nitrates would be added to the soil 25. C. Hydrogen 26. A. Gamma rays 27. B. Liver 28. C. Mixed farming 29. B. Stratosphere 30. B. -112°C 31. B. I and III only 32. B. NO 33. A. Water entering the cells 34. A. By the load 35. D. Liquid, solid, and gas 36. B. Brain and the spinal cord

⚫️⚪️ GENERAL PUBLIC NOTICE ⚪️⚫️ KNUST no longer accepts the posting of admission forms via post office. Starting from the 2024/2025 academic year, all applications must be completed online. NB: Applicants SHOULD NOT submit hard copies of their application to the University📌⏰

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1(a) What are chromosomes?  Answer: Chromosomes are thread-like structures made of DNA and protein found in the nucleus of most living cells. They carry genetic information in the form of genes. State three uses of DNA testing in humans.  Answer: 1. Forensic investigations (e.g., crime scene analysis). 2. Determining genetic relationships (e.g., paternity testing). 3. Diagnosing genetic disorders (e.g., Down syndrome). --- 1(b)  Name three noble gases present in the air.  Answer: 1. Helium (He) 2. Neon (Ne) 3. Argon (Ar) Explain briefly why the noble gases are unreactive under normal conditions.  Answer: Noble gases are unreactive because they have a full valence electron shell, making them stable and unlikely to form chemical bonds with other elements. --- 1(c)  Explain the term post-harvest loss as used in crop production.  Answer: Post-harvest loss refers to the reduction in the quantity or quality of agricultural products between the time they are harvested and when they reach the consumer due to factors such as poor handling, storage, or pests. State three precautions farmers take to minimize post-harvest losses of cereals in Ghana.  Answer: 1. Proper drying of cereals before storage. 2. Use of pest-resistant storage containers. 3. Regular inspection and treatment of stored grains. --- ### 1(d)  What is an indicator as used in electronics?  Answer: In electronics, an indicator is a device (often a light or display) that shows the state or condition of a system, such as whether a circuit is on or off. State three applications of solar energy in everyday life.  Answer: 1. Solar water heating. 2. Solar-powered electricity generation. 3. Solar-powered street lighting. --- ### 2(a)  Give two examples of each of the following types of crops cultivated in Ghana: - Stem tubers:     Answer: Yam, Taro  - Root tubers:     Answer: Cassava, Sweet potato  - Legumes:     Answer: Cowpeas, Groundnuts  --- ### 2(b)  (i) Explain the term saponification.  Answer: Saponification is the chemical reaction between a fat or oil and a strong base, typically sodium hydroxide (NaOH), to form soap and glycerol. (ii) State the observation that could be made when brine is added to the products of saponification.  Answer: When brine (saltwater) is added, soap precipitates out, making it easier to separate from the mixture. --- ### 2(c)  (i) What is a reflex action?  Answer: A reflex action is an automatic and rapid response to a stimulus that doesn't involve conscious thought. (ii) Give three examples of reflex actions in the human body.  Answer: 1. Knee-jerk reflex. 2. Blinking when something comes close to the eyes. 3. Pulling hand away from a hot surface. --- ### 2(d)  State the law of conservation of energy.  Answer: The law of conservation of energy states that energy cannot be created or destroyed but can only be transformed from one form to another. (ii) A cement block of mass 25 kg is placed at a height of 10 m above the ground and pushed to fall. Calculate the velocity of the block just before it touches the ground.  (g = 10 m/s²)  Using the equation of motion:  \[ v^2 = u^2 + 2gh \]  where \( u = 0 \), \( g = 10 m/s^2 \), \( h = 10 m \)  \[ v^2 = 0 + 2 \times 10 \times 10 = 200 \] \[ v = \sqrt{200} \approx 14.14 \, \text{m/s} \] Answer: The velocity of the block just before it touches the ground is approximately 14.14 m/s. --- ### 3(a)  (i) State three causes of genetic variation in human population.  Answer: 1. Mutations in DNA. 2. Recombination during sexual reproduction. 3. Gene flow from migration. (ii) Give two ways in which genetic variation affects organisms.  Answer: 1. It contributes to differences in physical traits. 2. It increases the adaptability of populations to changing environments. ---

1(a) What are chromosomes?  Answer: Chromosomes are thread-like structures made of DNA and protein found in the nucleus of most living cells. They carry genetic information in the form of genes. State three uses of DNA testing in humans.  Answer: 1. Forensic investigations (e.g., crime scene analysis). 2. Determining genetic relationships (e.g., paternity testing). 3. Diagnosing genetic disorders (e.g., Down syndrome). --- 1(b)  Name three noble gases present in the air.  Answer: 1. Helium (He) 2. Neon (Ne) 3. Argon (Ar) Explain briefly why the noble gases are unreactive under normal conditions.  Answer: Noble gases are unreactive because they have a full valence electron shell, making them stable and unlikely to form chemical bonds with other elements. --- 1(c)  Explain the term post-harvest loss as used in crop production.  Answer: Post-harvest loss refers to the reduction in the quantity or quality of agricultural products between the time they are harvested and when they reach the consumer due to factors such as poor handling, storage, or pests. State three precautions farmers take to minimize post-harvest losses of cereals in Ghana.  Answer: 1. Proper drying of cereals before storage. 2. Use of pest-resistant storage containers. 3. Regular inspection and treatment of stored grains. --- ### 1(d)  What is an indicator as used in electronics?  Answer: In electronics, an indicator is a device (often a light or display) that shows the state or condition of a system, such as whether a circuit is on or off. State three applications of solar energy in everyday life.  Answer: 1. Solar water heating. 2. Solar-powered electricity generation. 3. Solar-powered street lighting. --- ### 2(a)  Give two examples of each of the following types of crops cultivated in Ghana: - Stem tubers:     Answer: Yam, Taro  - Root tubers:     Answer: Cassava, Sweet potato  - Legumes:     Answer: Cowpeas, Groundnuts  --- ### 2(b)  (i) Explain the term saponification.  Answer: Saponification is the chemical reaction between a fat or oil and a strong base, typically sodium hydroxide (NaOH), to form soap and glycerol. (ii) State the observation that could be made when brine is added to the products of saponification.  Answer: When brine (saltwater) is added, soap precipitates out, making it easier to separate from the mixture. --- ### 2(c)  (i) What is a reflex action?  Answer: A reflex action is an automatic and rapid response to a stimulus that doesn't involve conscious thought. (ii) Give three examples of reflex actions in the human body.  Answer: 1. Knee-jerk reflex. 2. Blinking when something comes close to the eyes. 3. Pulling hand away from a hot surface. --- ### 2(d)  State the law of conservation of energy.  Answer: The law of conservation of energy states that energy cannot be created or destroyed but can only be transformed from one form to another. (ii) A cement block of mass 25 kg is placed at a height of 10 m above the ground and pushed to fall. Calculate the velocity of the block just before it touches the ground.  (g = 10 m/s²)  Using the equation of motion:  \[ v^2 = u^2 + 2gh \]  where \( u = 0 \), \( g = 10 m/s^2 \), \( h = 10 m \)  \[ v^2 = 0 + 2 \times 10 \times 10 = 200 \] \[ v = \sqrt{200} \approx 14.14 \, \text{m/s} \] Answer: The velocity of the block just before it touches the ground is approximately 14.14 m/s. --- ### 3(a)  (i) State three causes of genetic variation in human population.  Answer: 1. Mutations in DNA. 2. Recombination during sexual reproduction. 3. Gene flow from migration. (ii) Give two ways in which genetic variation affects organisms.  Answer: 1. It contributes to differences in physical traits. 2. It increases the adaptability of populations to changing environments. ---