Which of the following organisms is not a protozoan? A. Amoeba
B. Ascaris
C. Plasmodium
D. Paramecium
The structure of the cell membrane is a A. double layer and a double protein layer
B. middle bi-layer of protein with a lipid layer on either surface
C. middle bi-layer of lipid with a protein layer on either surface
D. protein layer with two inner lipid layers
Which of the following cells is a specialized cell? A. Amoeba
B. Plasmodium
C. Guard cell
D. Meristematic cell
The following organisms have structures for movement except A. Amoeba
B. Spirogyra
C. Volvox
D. Paramecium
Which of the following statements about protoplasm of a cell is not correct? It A. is a gelatinous mass
B. consists of cytoplasm and nucleus
C. is the liquid part of the nucleus
D. contains cellular organelles
When a Spirogyra filament is placed in a concentrated salt solution for 30 minutes, the cell would become A. plasmolysed
B. turgid
C. shortened
D. elongated
Two characteristic features of the class to which the crocodile belongs are labeled A. I and II
B. III and IV
C. II and IV
D. II and V
Two characteristic features of the class to which the crocodile belongs are labeled A. I and II
B. III and IV
C. II and IV
D. II and V
Water and salts are both lost from the human body in A. breath and sweat
B. breath and urine
C. breath, urine and sweat
D. sweat and urine
Which of the following features could be used to determine the growth of a seedling? A. Number of flowers
B. Number of leaves
C. Length of flowers
D. Length of radicle
In which of the following cells is this division likely to take place? A. Sperm cell
B. Blood cell
C. Muscle cell
D. Uterine cell
A plant that commonly undergoes vegetative propagation by means of leaves is A. Hibiscus
B. Bryophyllum
C. Crotalaria
D. Spirogyra
The part of the skeleton illustrated in the diagram is the A. atlas vertebrae
B. axis vertebrae
C. cervical vertebrae
D. thoracic vertebrae
The function of the part labelled I is to A. provide support to the spinal cord
B. provide surface for attachment of the muscle
C. carry the spinal cord
D. articulate with adjacent vertebrae
Blood pressure is higher in the arteries as a result of A. stress
B. contraction and relaxation
C. blockage in the arteries
D. presence of valves
A farmer who wants to keep seeds for three years before planting and wants to prevent them from sprouting uses A. auxin
B. gibberellins
C. abscisin
D. cytokinins
A person had an accident that affected the skull but not the nose and later lost the sense of smell. The accident must have affected the A. nose by extension
B. olfactory lobes of the brain
C. passage from the nose to the brain
D. part of the skull near the nose
Ability of the human eye to focus images accurately on the retina is called A. astigmatism
B. myopia
C. adjustment
D. accommodation
Which of the following characteristic features is not associated with monocotyledonous plants? A. Well-differentiated sepals and petals
B. Presence of fibrous root system
C. Presence of narrow leaves
D. Floral parts are in multiples of three
The main difference between a seed and a fruit is that a fruit A. is large while a seed is small
B. has two scars while a seed has one
C. is pigmented while a seed is not
D. can be dispersed by animals while a seed cannot
Which of the following processes removes carbon (IV) oxide from the atmosphere? A. Burning fuels
B. Putrefaction
C. Photosynthesis
D. Respiration in plants
Why did the student add the dilute hydrochloric acid to the sugar solution in step II? To A. oxidize the sugar solution
B. hydrolyse the sugar solution
C. dry the sugar solution
D. increase the volume of the sugar solution
What is the importance of step III in the testing process? To A. neutralize the sugar solution
B. soften the sugar solution
C. change the colour of the sugar solution
D. increase the acid content of the sugar solution
The colour change to be observed in step IV is A. blue-black
B. brick-red
C. purple
D. violet
Which of the following organs of the alimentary canal is not correctly matched with its function? A. Gall bladder – stores bile
B. Liver – stores glycogen
C. Appendix – releases enzymes
D. Teeth – grind food
A person suffering from obstruction of the bile duct is advised not to eat fats and oil because A. bile digests fats and oil
B. fats and oil can only be absorbed when bile is absent
C. bile emulsifies fat and oil
D. bile adds water to digesting food
A community reaches a climax when A. only pioneer organisms are present
B. new habitats are constantly being formed
C. there is an introduction of new plants and animal species within the community
D. the composition and size of a community remains constant over a long period
Which of the following components make up an ecosystem? A. Decomposers, animals and non-living factors
B. Living and non-living factors
C. Plants and non-living factors
D. Plants, decomposers, and non-living factors
The mode of nutrition of the plant in the diagram is A. photosynthetic and chemosynthetic
B. saprophytic and carnivorous
C. photosynthetic and carnivorous
D. chemosynthetic and saprophytic
The structure labelled I is A. a pitcher
B. an onion
C. a flower
D. a tendril
In which type of soil is the plant found? A. poorly aerated
B. water-logged
C. exposed
D. nitrogen-deficient
Which of the following organisms is an endo-parasite? A. Tapeworm
B. Flea
C. Tick
D. Aphid
Oil applied to the surface of water kills the larvae of mosquitoes through A. dehydration
B. poisoning
C. starvation
D. suffocation
Which of the following natural resources is most readily available to all organisms? A. Oil
B. Water
C. Air
D. Food
Which of the following resources is non-renewable? A. Forest reserve
B. Mineral deposit
C. Water
D. Wildlife
Soil erosion could be prevented by A. flooding a farmland
B. cover-cropping
C. deforestation
D. leaving the soil bare
Which of the following statements about human blood groups is not true? A. A is dominant over O
B. O is recessive
C. B is dominant over O
D. A and B are co-dominant
Which of the following traits is not inheritable? Ability to A. taste PTC
B. roll the tongue
C. move the ear
D. roll the eyeball
A woman with blood group A gives birth to a child with blood group O. Which of the following blood groups cannot belong to the father? A. A
B. B
C. AB
D. O
How many chromosomes will be in a gamete if the normal cell has four chromosomes? A. 2
B. 4
C. 6
D. 8
The gene for the spotted coat is recessive to the gene for the black coat. What are the genotypes of the parents if the gene for skin color is H? A. Spotted Leopard HH, Black Panther hh
B. Spotted Leopard HH, Black Panther Hh
C. Spotted Leopard Hh, Black Panther Hh
D. Spotted Leopard Hh, Black Panther hh
According to Mendel’s first law of inheritance, segregation of genes occurs when A. tall plants are crossbred
B. short plants are crossbred
C. tall plants and short plants are crossbred
D. plants are crossbred
Which of the following statements about sex-linked characters is not true? A. They are usually borne on the X chromosome
B. They are more common in males
C. Males are usually carriers
D. They are not usually carried on the Y chromosome
In explaining the term camouflage to a class, the diagram above shows four varieties, P, Q, R, and S, of the same species of fish living among water plants in a river. Which of the varieties is likely to decrease most in number if a predatory fish is introduced into the river? A. P
B. Q
C. R
D. S
Which of the varieties is most likely to outlive the others? A. P
B. Q
C. R
D. S
The variety selected in question 45 will outlive the others because A. the variety is the most beautiful
B. the variety does not have markings
C. the markings of the variety are similar to those of the environment
D. the predator does not like eating the variety
Which of the following organs of the alimentary canal is not correctly matched with its function? A. Gall bladder – stores bile
B. Liver – stores glycogen
C. Appendix – releases enzymes
D. Teeth – grind food
A farmer who wants to keep seeds for three years before planting and wants to prevent them from sprouting uses A. auxin
B. gibberellins
C. abscisic acid
D. cytokinins
A person had an accident that affected the skull but not the nose and later lost the sense of smell. The accident must have affected the A. nose by extension
B. olfactory lobes of the brain
C. passage from the nose to the brain
D. part of the skull near the nose
The ability of the human eye to focus images accurately on the retina is called A. astigmatism
