2016 Biology WAEC SSCE (School Candidates) May/June

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Biology 1 - Objective Test Questions

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

Biology 2 - Theory Questions

Section A - For All Candidates

1. 1. List three forms in which living cells exist
  2. Give one example each of the forms listed in 1(a)(i).
2. Make a diagram, 6cm- 10cm long, of a typical plant cell and label fully.
3. 1. In a tabular form, state three differences between a plant cell and an animal cell
  2. State three similarities between a plant cell and an animal cell
1. In sequence, name the organs that constitute the alimentary canal of humans
2. State:
  1. three structural differences;
  2. three structural similarities; between the alimentary canal of a bird and human
3. Explain briefly how the dentition of herbivores is adapted for feeding.
4. State two roles of pancreas in digestion.
1. 1. What is a habitat?
  2. Explain briefly three roles of a decomposer in an ecosystem.
2. Explain briefly energy flow in a freshwater habitat.
3. 1. State three harmful effects of microorganisms to plants
  2. State six beneficial effects of microorganisms to humans
1. 1. Explain the term agglutination as used in blood transfusion.
  2. The table below represents blood transfusion between blood donors and recipients. Copy and complete the table using the key (+) to represent compatibility and (-) to represent incompatibility
  Recipient
  A B AB O
  
  A
  
  B
  
  AB -
  
  O +
2. Explain how each of the following organisms are adapted for obtaining food
  1. Mosquito larva;
  2. Dodder plant;
  3. Grasshopper.

Section C - For Candidates In Nigeria Only

1. State two differences between tactic and nastic movements in plants.
2. Give two examples each of organisms that show:
  1. tactic movement;
  2. nastic movement.
3. 1. State three ways of caring for the mammalian skin.
  2. List three stimuli to which the mammalian skin is sensitive.
4. State five effects of high temperature on a terrestrial habitat.
5. 1. What is courtship behaviour in animals?
  2. List three courtship behaviours in animals
6. Name three organisms that carry out holozoic mode of nutrition.
7. Explain briefly how fingerprinting can be used to detect crime.

Biology 3 - Practical Questions

Section A - For All Candidates

1. 1. Cut a piece of specimen A. Place it on the white tile. Add a few drops of iodine solution. Record the observation and result in a tabular form.
  2. Squeeze a few drops of specimen E on another clean white tile provided, add a few drops of iodine solution. Record the observation and result in a tabular form.

1. 1. State two observable differences between specimens A and B.
  2. Suggest two factors that are likely to be responsible for the state of specimen B
  3. With the aid of a hand lens/magnifying lens, observe specimen B and name an organism likely to be growing on it.
  4. State the mode of feeding of the organism growing on specimen B.
2. 1. Make a drawing 6cm-8cm long of specimen C and label fully.
  2. State one function each of any three parts labelled.
Study specimens H, K, L and M and answer questions 2(a) to 2(e)
1. Name the location of each of specimens H, K and M in the body of a mammal.
2. 1. Name the fluid in specimen L.
  2. State two functions of the fluid named in 2(b)(i)
  3. Which of the other specimens is specimen L associated with?
3. 1. State two observable differences between specimens H and K.
  2. State two observable features of specimen K that adapt it to its function.
4. State one biological importance each of specimen K and M.
5. Make a drawing 8 cm— 10 cm long, of specimen M and label fully.

Section C - For Candidates in Nigeria Only

Study specimens S, T, U, V and W and answer questions 4(a) to 4(e).
1. 1. Name the habitats of each of specimens S, U and W.
  2. Name the class to which each of specimens S, U and W belong.
2. State:
  1. four observable similarities between specimens S and U.
  2. five observable differences between specimens S and U.
3. 1. Identify the sex of specimen U.
  2. State two reasons for the answer in 4(c)(i)
4. State four observable features that adapts specimen S to its habitat.
5. Construct a food chain using at least three of the given specimens.

Observation	Result