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Year 9 term 1 Biology exam

1. What is a flower? [2]

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A. Name two parts that make the following in a flower [4]

1. Stamen

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2. Pistil

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B. State the role of the following parts of a flower [6]

1. Stigma

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2. Ovary

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3. Ovules

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4. Anthers

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5. Pollen grain

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6. Petals

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C. State 3 uses of water in plants. [3]

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D. A student was observing two flowers, Flower A had coloured petals while Flower B did not have coloured petals.

1. state the agent of pollination of the flowers [2]

1. Flower A……………………………………………

2. Flower B……………………………………………

E. apart from coloured petals state any other 3 differences between the two flowers. [6]

Flower A Flower B
1………………………………………… ………………………………………… ………………………………………… 2………………………………………… ………………………………………… ………………………………………… 3………………………………………… ………………………………………… ………………………………………… ………………………………………… ………………………………………… ………………………………………… ………………………………………… ………………………………………… ………………………………………… ………………………………………… ………………………………………… …………………………………………

E. What is pollination. [1]

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F. Name two insects that help in pollination. [2]

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G. What is fertilisation?  [1]

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H. State the three steps that occur during fertilisation. [3]

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2. a. What is a decomposer?

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b. State two adaptations of the following organisms that enable them to live in their habitat

1. Cactus

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2. Polar bear

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3. Sea-lion

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4. Camel

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5. Spruce tree in arctic region

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2.  (i) Draw the following food chains that show all tropic levels and that consists of:-

1. Dog as a tertiary consumer

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2. Cat as a quaternary consumer

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3. Rice as a producer

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4. Man as a secondary consumer

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5. Goat as a primary consumer

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6. fungi as a decomposer

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(ii) Connect the food chains above to produce a single food web. Make sure you use all the organisms above [12]

3. (i) State any 2 other decomposers. [2]

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   (ii). State 3 importance of decomposers in our lives today [3]

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