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CSEE 🇹🇿 NECTA ✓ MS available

Biology · Paper 2C · 2022

2 questions

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Questions (2)

Section A

1. 25 marks

You are provided with specimen C , D and E. (a) Observe the displayed reproduction system in the dissected specimen C and then answer the following questions; (i) What is a sex of the specimen C ? Give a reason to support your answer. (ii) Draw a well labelled diagram of the reproductive system observed in dissected specimen C . (b) Carefully use the hand lens to observe the structures used for reproduction in specimen D and then draw a diagram of a frond with its reproductive structures. (c) What are types of reproduction exhibited by specimen D and E? Give a reason on each to support your answer. (d) Briefly explain how the type of reproduction in specimens D and E occurs. (e) In what ways are specimens D and E useful to human being. Give two points for each.

  1. What is a sex of the specimen C ? Give a reason to support your answer. (1 mk)
  2. Draw a well labelled diagram of the reproductive system observed in dissected specimen C . (1 mk)
  3. Carefully use the hand lens to observe the structures used for reproduction in specimen D and then draw a diagram of a frond with its reproductive structures. (1 mk)
  4. What are types of reproduction exhibited by specimen D and E? Give a reason on each to support your answer. (1 mk)
  5. Briefly explain how the type of reproduction in specimens D and E occurs. (1 mk)
  6. In what ways are specimens D and E useful to human being. Give two points for each. (1 mk)

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Section B

2. 25 marks

You are provided with specimens D, F, and G. (a) Classify each of the specimens D, F and G to Class level. (b) Why specimen D and F were placed in the same Kingdom but different Division? (c) Why is it important for scientist to use natural classification system to classify the specimen D and F? (d) What would be the disadvantages for scientist to use artificial classification system to classify specimen D and F. (e) Draw a well labelled diagram of specimen F. (f) In what way are the products from specimen G useful for industrial development? Give two points.

  1. Classify each of the specimens D, F and G to Class level. (1 mk)
  2. Why specimen D and F were placed in the same Kingdom but different Division? (1 mk)
  3. Why is it important for scientist to use natural classification system to classify the specimen D and F? (1 mk)
  4. What would be the disadvantages for scientist to use artificial classification system to classify specimen D and F. (1 mk)
  5. Draw a well labelled diagram of specimen F. (1 mk)
  6. In what way are the products from specimen G useful for industrial development? Give two points. (1 mk)

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