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“Factors contributing to poor mathematics performance in KCSE among learners in public secondary schools in Limuru sub-county Kiambu county -Kenya. ”
11. The diagram below represents a stage during cell division. a) (i) Identify the stage of cell division. (1mk) ………………………………………………………………………………………………… ………………………………………………………………………………………………..… (ii) Give two reasons for your answer in a (i) above. (1mk) ………………………………………………………………………………………………… ………………………………………………………………………………………………….. ………………………………………………………………………………………………..… ………………………………………………………………………………………………..… b) Name the structure labeled M. (1mk) ………………………………………………………………………………………………… ………………………………………………………………………………………………..… 12. Explain why several auxiliary buds sprout when a terminal bud in a young tree in removed. (2mks) ………………………………………………………………………………………………… ………………………………………………………………………………………………….. ………………………………………………………………………………………………..… ………………………………………………………………………………………………… 13. Study the diagram below and answer the questions that follows. (a) What is the phylum X ? (1mk) ………………………………………………………………………………………………… ………………………………………………………………………………………………..… (b) Name the classes labeled a and b. (2mks) a …………………………………………………… b ……………………………………………………. 17 (a) Define the following terms as used in genetics: (2mks) (i) Mutation ………………………………………………………………………………………………… ………………………………………………………………………………………………..… …………………………………………………………………………………………… (ii) Mutagen ………………………………………………………………………………………………… ………………………………………………………………
1. State the use of each of the following apparatus in collection of specimens. (2mks) a) Bait trap ………………………………………………………………………………………………… ………………………………………………………………………………………………..… b) Pooter ………………………………………………………………………………………………… ………………………………………………………………………………………………..… 2. Name the class of animals that exhibit (2mks) a) Open circulatory system ………………………………………………………………………………………………… ………………………………………………………………………………………………..… b) Closed circulatory system ………………………………………………………………………………………………… ………………………………………………………………………………………………..… 3. a) State two functions of the centrole. (2mks) ………………………………………………………………………………………………… ………………………………………………………………………………………………….. ………………………………………………………………………………………………..… ………………………………………………………………………………………………….. b) Which organelles would be abundant in: (2mks) (i) Skeletal muscle ………………………………………………………………………………………………… ………………………………………………………………………………………………..… (ii) Palisade tissue
Answer ALL the questions in this section in the spaces provided. 1. Give four advantages of plantation farming. 2mks …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… …………….…………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………….. 2. State two effects of pests on crop production. 1mk …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… 3. Give four conditions of the land which may make it necessary to carry out reclamation practices. 2mks …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………… 4. Give four physical weathering agents in the soil formation process. 2mks …………………………………………………………………………………………………………………………………………… ……………………………………………………..…………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………
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