Answer All Questions by clicking on the correct alternatives
Which of the following processes need energy?
Osmosis
Diffusion
Plasmolysis
Active transport
What is the normal blood sugar level in an adult person?
140mg/100cm3
100mg/100cm3
90 mg/100 cm3
80 mg/100 cm3
The diagram in figure 1 is of a transverse section of a plant part.
From which one of the following was the section taken?
Monocotyledonous stem
Monocotyledonous root.
Dicotyledonous root.
Dicotyledonous stem.
Which one of the following represents a reflex arc?
Receptor - motor neurone - central nervous system - sensory neurone-effector.
Receptor - sensory neurone - effector- central nervous system- motor neurone
Receptor - central nervous system- motor neurone — sensory neurone -effector.
Receptor — sensory neurone - central nervous system- motor neurone — effector.
The following are characteristics of insects: (i) They undergo complete metamorphosis (ii) They have 1 or 2 pairs of wings (iii) They have 3 pairs of jointed legs (iv) Their bodies are divided into 3 main parts (v) They posses exoskeletons Which of them are common to all insects?
(iii), (iv) and (v)
(i),(ii)and(iii)
(i), (iii) and (v)
(iii), (ii) and (v)
Which one of the following combinations of words about amoeba are related?
Pseudopodia, reproduction
Nucleus, movement.
Contractile vacuole, water
Ectoplasm, digestion.
The results of an experiment to determine percentage of water in a sample of soil are shown below: Mass of crucible = 15 g Mass of crucible plus soil = 30 g Mass of crucible plus soil after drying =25g What is the percentage of water?
33.3%
18.7%
66.7%
20.0%
Which of the following reasons supports natural feeding of baby on mother's milk? Mother's milk is: (i) easy to digest. (ii) Made up mainly of carbohydrates. (iii) Contains correct antibodies. (iv) Fosters relationship between mother and baby
(i)and(ii)
(ii) and (iii)
(ii), (iii) and (iv)
(i), (iii) and (iv)
The milk teeth in human consist of
Incisors only
Incisors and canines
incisors, canines and premolars
incisors and premolars.
Which one of the following is not a primary function of roots?
Amylase
Urea
Insulin
Sodium chloride
Which one of the following is not a primary function of roots?
Conduct water and mineral salts
Anchor the plant into the soil
Store food and water.
Absorb water and mineral salts
Within an ecosystem, the total number of secondary consumers must be
Less man the total number of herbivores
Greater than the total number of herbivores.
Equal to the total number of producers.
Constant year after year.
Which one of the following hormones is not secreted from the pituitary gland?
Gonadotrophic hormone
Luteinishing hormone
Progrestrone hormone
Follicle stimulating hormone
Why is it necessary to keep both open when you are a monocular microscope?
Straining one eye is avoided
One eye is set on the drawing paper
It enable one to see the object clearly
It eases the control of the adjustment knobs.
Which one of the following food substances are not charged by the gut enzymes?
Lipids and vitamins
Minerals and vitamins
Minerals and disaccharides
Lipids and lactose.
The structure in insects that serve as respiratory surfaces for gaseous exchange are
Trachea
Bronchioles
Trachioles
Spiracles
A man's urine gave a positive test with Benedicts solution. What is the best deduction about this man?
He had been eating a lot of sugar.
There was too much insulin in his blood.
There was too much glycogen in his blood
He was suffering from diabetes.
Figure 2 below is a diagram showing a plan of the pentadactyl limb.
What part is represented by letter X?
Femur
Humerus
Radius
Ulna
What do the rhizobium bacteria gain in their association with leguminous plant?
Air
Heat
Shelter
Nitrates
Which of the following is the best advantage of crop rotation?
It helps reduce soil erosion.
The growth of weeds is brought under control.
It prevents exhaustion of particular mineral salts from the soil.
It helps improve soil conditions.
Which one of the following events does not occur following the contraction of the ventricles in mammalian heart?
Blood flows from ventricles into arteries.
The blood pressure increases in the aorta.
Atrio-ventricular valves open.
Arterial valves open.
Which of the following mineral elements are for bone formation?
Iodine, sodium and calcium.
Iron fluorine and calcium
Phosphorous, sodium and fluorine
Calcium, fluorine and phosphorus.
What is the function of albumen in an egg? It
is a source of fat and protein for the embryo.
is a source of protein and water for the embryo.
suspends the embryo.
stores embryo's excretory products.
A heterozygous red flowered plant (Rr) is crossed with a homozygous white flowered plant (rr). If R is dominant over r, what will be the phenotypes of the offspring's?
All red
All white
Pink and white
Red and white
The dry fruit which splits open along both structures is
A follide
A capsule
An achene
A legume
Which one of the following structures is not essential in the life of a tadpole?
Lungs
Homy jaws
Gills
Tail
The diagram in figure 3 below represents the frequency of occurrence of a character in human population.
Which one of the following characters in the population does not conform to this pattern?
Height
Weight
Length of feet
Eye colour
Which of the following is not a function of the liver?
Storage of vitamins
Manufacture of plasma proteins
Storage of proteins
Formation of bile.
Which of the following cells in the leaf contain the leaf number of chloroplasts?
Pallisade cell
Guard cells
Epidermal cells
Spongy mesophyll cells
Which one of the following organisms is not a heterotroph?