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CSEE 🇹🇿 NECTA ✓ MS available

Biology · Paper 2A · 2022

2 questions

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Questions (2)

Section A

1. 25 marks

You have been provided with specimens T and U. Study them carefully and observe the structure shown in the diagram. (a) What is the type of reproduction exhibited by specimen T and U? (b) What are the advantages and disadvantages of the type of reproduction exhibited by specimen T? (c) Draw the diagrams of specimens T and U and label their internal and external parts. (d) Which process would not proceed normally if the internal part of specimens U and T are totally removed from the live plants? (e) State two economic importance of the specimen T in our daily life.

  1. What is the type of reproduction exhibited by specimen T and U? (2 mk)
  2. What are the advantages and disadvantages of the type of reproduction exhibited by specimen T? (6 mk)
  3. Draw the diagrams of specimens T and U and label their internal and external parts. (10 mk)
  4. Which process would not proceed normally if the internal part of specimens U and T are totally removed from the live plants? (3 mk)
  5. State two economic importance of the specimen T in our daily life. (4 mk)

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2. 25 marks

You have been provided with specimens L, M, N and P. Using a hand lens, carefully study the specimens and then answer the following questions: (a) Why is it not recommended to place the specimens L, M and N in the same Kingdom. Give reasons. (b) i) Classify specimens L, M and N to Class level. ii) State two reasons for placing the specimens M and N in their respective Classes in (b)i). iii) In what ways do the members of the Class in which specimen L belongs advantageous to other living organisms? (c) Carefully observe the specimen P and then answer the following questions: i) In which Phylum does the specimen P was taken? Give reason to support your answer. ii) Name four organisms which can be placed in the same Phylum/Division of specimen P. iii) What are the advantages of specimen P in daily life? Give three points.

  1. Why is it not recommended to place the specimens L, M and N in the same Kingdom. Give reasons. (4 mk)
  2. In what ways do the members of the Class in which specimen L belongs advantageous to other living organisms? (4 mk)
  3. What are the advantages of specimen P in daily life? Give three points. (6 mk)

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