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Biology · Karatasi 2A · 2012

3 maswali

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Maswali (3)

Sehemu A

1. 30 alamas

Dissect specimen Z to expose reproductive and excretory systems. (a) Draw a well-labelled diagram showing two parts from each of the two systems. (b) State the function of each reproductive part drawn. (c) What is the sex of specimen Z? Give three justifications. (d) Observe the threadlike structures present and state why they are numerous.

  1. Draw a well-labelled diagram showing two parts from each of the two systems. (10 alama)
  2. State the function of each reproductive part drawn. (6 alama)
  3. What is the sex of specimen Z? Give three justifications. (9 alama)
  4. Observe the threadlike structures present and state why they are numerous. (5 alama)

Boresha ili kuona majibu ya mfano.

2. 10 alamas

Use solution M and reagents provided to perform food tests. (a) Carry out food tests on solution M and fill the table below: Food Test Procedure Observation Inference (b) State three biological roles of food substances identified. (c) (i) Name one enzyme responsible for digestion of the food identified. (ii) State the end products of digestion.

  1. Carry out food tests on solution M and fill the table below: Food Test Procedure Observation Inference (3 alama)
  2. State three biological roles of food substances identified. (3 alama)
  3. (i) Name one enzyme responsible for digestion of the food identified. (ii) State the end products of digestion. (4 alama)

Boresha ili kuona majibu ya mfano.

3. 10 alamas

Observe specimens U (Palm plant), N (Fish scale), and R (Groundnut seedling). (a) Give two observable features used to classify specimen U into its kingdom. (b) Give three adaptive features of specimen U for dry conditions. (c) (i) Name the organism where specimen N originated. (ii) State two functions of N to the organism. (d) What features are used to place specimen R into its class? State three.

  1. Give two observable features used to classify specimen U into its kingdom. (2 alama)
  2. Give three adaptive features of specimen U for dry conditions. (3 alama)
  3. (i) Name the organism where specimen N originated. (ii) State two functions of N to the organism. (2 alama)
  4. What features are used to place specimen R into its class? State three. (3 alama)

Boresha ili kuona majibu ya mfano.

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