1. An adult person who constantly feeds on an iron deficient diet may show one of the following conditions.
A. Goitre. B. Anaemia. C. Cretinism. D. Scurvy.
2.Which one of the following is a saprophyte?
A. Mushroom. B. Alga. C. Tick. D. Grasshopper.
3. Which of the following vitamins is deficient in a person whose gums bleeds.
A.C B.E C. B2 D. K
4. The Saprophytic and holozoic modes of feeding are similar because both________.
A.do not feed on cellulose.
B. do not require chloroplasts.
C. feed on dead organic matter.
D. utilise enzymes to speed up the break down of complex food substances.
5. A student added dilute Sodium hydroxide to a food and then added 2 drops of Copper Sulphate Solution.Purple colour was observed.Which one of the following is likely to be contained in the food?
A.Starch. B. Non-reducing sugar. C. Protein. D. Vitamin C .
6. What mode of nutrition is used by an alga e.g Spirogyra?
- Heterotrophism. B. Parasitism. C. Autotrophism. D. Saprophytism.
7. Enzymes differ from other catalysts because enzymes_________.
A.speed up reactions. B. are protein in nature.
C. are required in small amounts. D. respond to temperature changes.
- Which of the following does not yield smaller units on hydrolysis?
- Glycogen. B. Galactose. C. Sucrose. D. Starch.
9. Which one of the following vitamins is water soluble?
A. A B.E C.D D.B
10. Which of the following organisms does not possess antennae?
A.Termite B.Tick C.Fruitfly. D. Centipede
11. Which one of the following types of bacteria causes the conversion of plant and animal remains into ammonium compounds in the soil.
A. Nitrifying. B. Denitrifying. C. Putrifying. D. Nitrogen fixing.
12. Which one of the following is a parasite?
A. Liverfluke. B. Rat. C. Mosquito. D. Bacteria in the gut.
13. Controlled feeding on food rich in Vitamin A may improve
A. Calcium deposition. B. Number of red blood cells.
C. Night vision. D. Healing of wounds.
14. At which of the following levels of classification can organisms interbreed and produce fertile offspring?
A. Class B. Species C. Phylum D. Kingdom
- Which of the following features belong to both an arachnid and an insect?
A. Cuticle and two pairs of wings. B. Six legs and two pairs
C. Six legs and antennae D. Jointed legs and cuticle.
For questions 16-17, read the responses 1 to 4 and select the correct answer according to this code.
A. If statements 1,2 and 3 are correct.
B. If statements 1 and 3 are correct.
C. If statements 2 and 4 are correct.
D. If statement 4 only is correct
E. If all statements are correct
16 .Which of the following are characteristic stem structures found in rhizomes?
1.Scale leaves 2.Buds
3.Adventitious roots 4. Tap roots
17. Which of the following store food in a modified root?
1. Carrot 2. Sweet potato
3.Cassava 4. Irish potato
18. Which one of the following is not a kingdom?
A.Monera B.Protozoa C. Protista D.Animalia.
19. The point on the stem to which a leaf is attached is known as
A. axil B. node C. internode D. petiole
20. A collection of flowers on the same stalk is
A.A simple flower B. An inflorescenc C Syncarpous pisti D. Apocarpous pistil
21. What will happen to an enzyme if the temperature of its medium is raised beyond the optimum level? The enzyme will be;
- Killed B. Inactivated C. Denatured D. Activated
- In the classification of organisms which of the following is the correct hierarchy of the taxonomic groups?
A. family genus class order phylum
B. family genus order phylum class
C genus family order class phylum
D genus phylum order family class
23.The main reason for the decrease in humus content of cultivated soil. Is———
A . consumption of organic matter by earthworms.
B.continuous removal of plant material by harvesting.
C. Pollution of the soil by pesticides.
D. Erosion of soil materials by wind and rain.
24. One of the major functions of vitamin C in the human body is
A. To provide body resistance against diseases.
B. To provide resistance against blood cells.
C. To add bulk to food eaten.
D. To increase the rate of heartbeat
25 Which one of the following compounds is a constituent of enzyme?
A. Lipids B. Polysaccharides C. Protein D. Vitamins
26. The following shows hypothetical results from an experiment to determine the water and humus content of a garden soil.
– Weight of a crucible = Pg
– Weight of crucible + soil = Qg
– Weight of crucible soil after drying to constant weight = Rg
– Weight of crucible + soil after heating to read hot = Sg
Which one of the following expressions gives the percentage of the humus content of the soil?
A. x 100% B. X 100% C. D.
27. Which one of the following is a modified taproot?
A. carrot tuber B. onion bulb C. cassava tuber D. sweet potato tuber
28. The living together of a fungus and an algae as a lichen is called
A. symbiosis B. parasitism C. saprophitism D. commensalisms
29. The saprophytic and holozoic modes of feeding are similar because both
A. do not feed on cellulose. B. do not require chloroplasts.
C. utilize enzymes to break down complex food substances. D. feed only on dead organic matter.
30. The following results were obtained from an experiment done to determine the percentage of air in a sample of soil.
Volume of water used = 10cm3
Volume of soil + water = 40cm3
Volume of soil + water after stirring = 37cm3
From the results, the percentage of air in the soil is
A. 7.5 B. 8.1 C. 10 D. 23.3
31. a) state the components of a fertile soil (4 marks)
b) State any four mans activities leading to lose of soil fertility (4 marks)
c) What is meant by the term soil conservation (2 marks)
d) How can soil be conservation be achieved (6 marks)
e) State the difference between sand soil and clay soil (4 marks)
|Sand soil||Clay soil|