- An example of an organism that exists as a colony is
A. Spirogyra
B. Paramecium
C. Euglena
D. Volvox
- Gymnosperms bear naked seeds because they lack
A. ovary
B. colourful flowers
C. pollen grains
D. Stigma
- DNA formation is associated with
A. Golgi bodies
B. lysosomes
C. mitochondria
D. nucleus
- The term that can be used to describe what happened to Plant A after seven hours is
A. wilting
B. competition
C. transpiration
D. Osmosis
- The environmental factors responsible for the condition in plant B are
A. low humidity and low temperature
B. high humidity and low temperature
C. low humidity and high temperature
D. high humidity and high temperature
- Which of the following statements about the diagrams is correct?
A. They are both organs
B. One of them is an organism
C. They both form part of tissues
D. They are both harmful to humans
- A decrease in the number of 11 will result in
A. an increase in urine production
B. an increase in energy production
C. a decreased population
D. decreased immunity
- Flaccidity in plants is associated with
A. cessation of photosynthesis
B. wilting
C. turgidity
D. discolouration of leaves
- Which of the following substances is not usually present in the urine of a healthy person?
A. Urea
B. Mineral salts
C. Glucose
D. Water
- Muscles act in opposite directions in order to
A. cause a bone to move
B. prevent dislocation at joints
C. prevent muscle fatigue
D. regulate bodily activities
- Lateral meristem in flowering plants is found in the
A. cortex
B. pericycle
C. cambium
D. pith
- The cells and tissues of the nose, throat, chest diaphragm and lungs form the
A. circulatory system
B. respiratory
C. transport system
D. digestive system
- The exchange of gases between the environment and the respiratory organs of vertebrates is referred to as
A. inhalation
B. respiration
C. expiration
D. breathing
- The maintenance of a constant internal environment in an organism is known as
A. homeostasis
B. homoiothermy
C. dieresis
D. dialysis
- Which of the following organs is responsible for the production of insulin?
A. Spleen
B. Adrenal gland
C. Thyroid gland
D. Pancreas
- Which of the following actions is NOT a voluntary action?
A. Stealing
B. Sneezing
C. Fighting
D. Cheating
- In both dicotyledonous and monocotyledonous plants, the root hairs originate from the
A. piliferous layer
B. epidermal layer
C. endodermal layer
D. cortical layer
- Which of the following parts of the ear does NOT contain endolymph?
A. Semi-circular canals
B. Utriculus
C. Tympanum
D. Sacculus
- The type of placentation illustrated in the diagram above is
A. marginal
B. parietal
C. axile
D. basal
- The CORRECT order for the test is?
A. I, II, III and IV
B. I, III, II and IV
C. II, III, I and IV
D. III, I, II and IV
- The best time to pluck the leaf for the experiment is
A. after being exposed to sunlight
B. three hours after sunset
C. before sunrise
D. six hours after sunset
- In which of the plant tissues are guard cells located?
A. Epidemis
B. Mesophyll
C. Vascular bundles
D. Meristems
- The association between two organisms in which one of the organisms gains and the other loses is referred to as
A. saprophytism
B. commensalism
C. mutualism
D. parasitism
- The function of the villi in the alimentary canal is to
A. secrete gastric juice
B. curdle milk
C. emulsify fat
D. increase the surface area for absorption
- Which of the following structures is not an organ of the digestive system?
A. Oesophagus
B. Pancreas
C. Stomach
D. Kidney
- The source of the nitrates in the diagram is termed
A. root nodules of legumes
B. cloud
C. fertilizers
D. organic matter
- The phenomenon in the diagram is termed
A. denitrification
B. conservation
C. eutrophication
D. global warming
- Another cause that could lead to the phenomenon in the diagram is
A. exhaust from cars
B. oil spillage
C. dumping of sewage
D. excess rainfall
- In ecology, a community refers to
A. a number of individuals of a given species
B. groups of different organisms living in a habitat
C. existing species in an abandoned farmland
D. the dominant species in a habitat
- The direction wind is determined by
A. an anemometer
B. a Secchi disc
C. a wind vane
D. a barometer
- Food webs are complex because
A. the number of producers are large
B. many animals feed directly on producers
C. they include primary, secondary and tertiary consumers
D. some animals form part of several food chains
- Special modifications which enable an organism to survive in its habitat is known as
A. adaptation
B. tolerance
C. mimicry
D. colouration
- Which of the following relationships does not involve two organisms?
A. Commensalism
B. Saprophytism
C. Symbiosis
D. Parasitism
- Overcrowding in a population does not result in
A. death
B. commensalism
C. competition
D. migration
- A pandemic is an outbreak of disease that
A. is confined to a town
B. is widespread
C. will not spread
D. has limited spread
- The rational and prudent use of natural resources is known as
A. preservation
B. conservation
C. utilization
D. management
- Which of the following natural resources cannot be conserved?
A. soil
B. water
C. wildlife
D. air
- Which of the following actions supports conservation? To
A. protect endangered species
B. preserve trees for timber
C. permit hunting activities
D. provide income for the government
- A noticeable physical appearance of individuals of the same species is called
A. physical variation
B. morphological variation
C. physiological variation
D. discontinuous variation
- A blend of inherited and acquired characteristics shows
A. variation
B. inheritance
C. evolution
D. heredity
- A cross between two parents produced four offspring with blood groups AB, BB, BO and AO. What is the blood group of their parents?
A. AA and BO
B. BB and AO
C. AB and BO
D. AB and AO
- A sick baby was successfully transfused with blood from the father who has blood group AB.
What is the group of the sick baby?
A. A
B. B
C. AB
D. O
- What is the genotype ratio of carrier females to normal males in the cross?
A. 1:1
B. 2:3
C. 3:4
D. 4:1
- Which of the genotypes are carriers of colour blindness?
A. I and II only
B. I and III only
C. II and III only
D. I, II and III only
- Scientists who study genetics are known as
A. genealogists
B. geneticists
C. mendalists
D. genescientists
- Which of the following scientists did not contribute to the development of genetics?
A. Wilhem Johannsen
B. Felix Durjadin
C. Thomas Morgan
D. Gregor Mendel
- Which of the following terms is associated with natural selections?
A. adaptive radiation
B. differential reproduction
C. population variability
D. survival of the fittest
- In which of the following insects is group instinct not displayed?
A. Soldier ants
B. Cockroaches
C. Honey bees
D. Termites
- The inability of an organism to adapt to its habitat can lead to
A. dormancy
B. adaptation
C. extinction
D. survival
