Biology · Paper 1 · 2025
20 questions 🇹🇿 NECTA ✓ Official NECTA answersBiology · Paper 1 · 2025
20 questions
3-hour timed simulation · auto-graded · counts toward ranking
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Farmers at Mtakuja village observed a continuous decrease in the amount of beans yield in their farms. How is this step in the scientific process referred?
Section B
Mkutano villagers use traditional methods to process, preserve and store variety of foods they obtain from their daily activities. Outline six advantages of such methods.
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With the aid of a labeled diagram, describe the events which take place during the prophase stage of mitosis.
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How are the cardiac muscles adapted to perform their roles? Give six points.
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Bacteria, Amoeba and Non-flowering plants reproduce asexually. Explain three merits and three demerits of the type of reproduction exhibited by these organisms.
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A man with heterozygous blood group A married a woman with heterozygous blood group B. One among their offsprings produced was blood group 0. Use genetic cross to show the probability of producing such offspring.
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By using example, explain how each of the following provide evidences for organic evolution. Give three points for each.
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Section C
You are invited as a guest speaker in a youth meeting to fight against drug abuse. Recommend six preventive and control measures you would address to them.
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Matatu villagers have appointed you as a chair person for campaign against gonorrhoea prevention. Explain three ways of transmission and five measures that will help them to prevent the disease.
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Analyse five environmental factors which affect the rate of transpiration in plants.
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