2013 WAEC (WASSCE) Biology Past Questions & Answers

Question 1

The maintenance of a stable internal environment within the body of a mammal is known as

Accepted Answer

C. homeostasis

Answer

A. osmosis

Answer

B. plasmolysis

Answer

D. excretion

Question 2

Which of the following structures is only formed during cell division in animal cells?

Accepted Answer

C. Centrosome

Answer

A. Cell memberane

Answer

B. Cytoplasm

Answer

D. Ribosome

Question 3

The name of the enzyme that catalyses the conversion of glucose to glucose-6-phosphate at the beginning of glycolysis is

Accepted Answer

C. hexokinase

Answer

A. phospho-fructokinase

Answer

B. glucose isomerase

Answer

D. glucose-6-kinase

Question 4

A pyramid of numbers is constructed by

Accepted Answer

C. conducting census

Answer

A. comparing living and non-living things

Answer

B. measuring productivity

Answer

D. labelling the living organisms

Question 5

In genetics, linkages refer to the linking of genes of the

Accepted Answer

A. same chromosomes

Answer

B. different chromosomes

Answer

C. same nucleus

Answer

D. different nuclei

Question 6

The absence of alimentary canal in the parasitic flatworm can be attributed to the fact that

Accepted Answer

C. its body absorbs digested food

Answer

A. its body does not feed

Answer

B. it has no enzymes

Answer

D. it has suckers on the scolex

Question 7

Which of the following conditions would result result in a decrease in the production of antidiuretic hormone?

Accepted Answer

B. Drinking large quantities of water

Answer

A. Abnormally high blood sugar level

Answer

C. Increase in osmotic pressure of blood

Answer

D. Period of strenuous exercise

Question 8

Which of the following statements is not correct about the mammalian heart?

Accepted Answer

C. blood passes from of blood into the right ventricle to the left auricle through the aorta

Answer

A. Oxygenated blood enters the left auricle from the pilmonary vein

Answer

B. the walls of the ventricle are thicker than those of the auricle

Answer

D. the tricuspid valve prevents the back flow of blood into the right auricle

Question 9

Which of the following traits may be considered in marriage counseling?

Accepted Answer

C. Rhesus factor

Answer

A. Height

Answer

B. Fingerprints

Answer

D. Colour of skin

Question 10

The bacteria that reduce nitrates in the soil into gaseous nitrogen are referred to as

Accepted Answer

B. denitrifying bacteria

Answer

A. nitrifying bacteria

Answer

C. putrefying bacteria

Answer

D. saprophytic bacteria

Question 11

In which of the following levels of classification are the members most similar?

Accepted Answer

C. Species

Answer

A. Order

Answer

B. Genus

Answer

D. Phylum

Question 12

The producers in a food chain in an aquatic environment are

Accepted Answer

B. phytoplankton

Answer

A. birds

Answer

C. zooplankton

Answer

D. fishes

Question 13

Which of the following pairs of structures in living organisms do not perform similar functions?

Accepted Answer

B. Root hairs and mammalian hairs

Answer

A. Lungs and spiracles

Answer

C. Feathers and scales

Answer

D. Contractile vacuole and Kidneys

Question 14

The following organisms are pests of plants except

Accepted Answer

C. bacteria

Answer

A. birds

Answer

B. nematodes

Answer

D. rodents

Question 15

Darwin noticed that organisms in similar habitats across the world looked alike. This illustrates

Accepted Answer

A. convergent evolution

Answer

B. adaptive radiation

Answer

C. co-evolution

Answer

D. descent with modification

Question 16

Rhizobium which lives in the root nodules of leguminous plants is an example of the association known as

Accepted Answer

C. mutualism

Answer

A. commensalism

Answer

B. epiphytism

Answer

D. saprophytism

Question 17

Which of the following features is used by chameleons to escape predation?

Accepted Answer

D. adaptive colouration

Answer

A. fearsome appearance

Answer

B. coiling tail

Answer

C. offensive smell

Question 18

Spirogyra is regarded as a multicellular plant because

Accepted Answer

A. the cylindrical cells are linked end to end

Answer

B. its cells are linked together by cytoplasmic strands

Answer

C. its cells are large

Answer

D. it is an algae containing a large vacuole

Question 19

Which of the following sequences is the correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside ?

Accepted Answer

C. Pith,xylem, cmbium,phloem,, collenchyma, parenchyma and epidermis

Answer

A. pith , phloem, cambium, xylem, parenchyma, collenchyma and epidermis

Answer

B. Xylem, phloem, cambium, cortex, endodermis, collenchyma and epidermis

Answer

D. phloem, xylem, cambium, cortex, endodermis, collenchyma and epidermis

Question 20

The maximum size of a population that a given area can support is known as

Accepted Answer

B. carrying capacity

Answer

A. population density

Answer

C. population growth

Answer

D. maximum population

Question 21

Which of the following statements is not a reason for conserving wildlife?

Accepted Answer

D. increasing the amount of rainfall

Answer

A. Attraction of tourists into the country

Answer

B. Serving as a source of food

Answer

C. Serving as a source of income

Question 22

The resolution of a microscope refers to its power to

Accepted Answer

B. distinguish clearly between two objects

Answer

A. increase an object's apparent size

Answer

C. scan the surface of an object

Answer

D. focus on an object

Question 23

When a man who is Rh-positive marries a woman who is Rh-negative, there will be incidence of

Accepted Answer

A. still births

Answer

B. sicklers

Answer

C. albinos

Answer

D. living children

Question 24

The frog is considered a better swimmer than the toad because it

Accepted Answer

A. has more pronounced webbed digits

Answer

B. has much longer and stronger hind limbs

Answer

C. lives in water most of the time

Answer

D. is more streamlined than the toad

Question 25

Which of the following human activities would help prevent endangered species from extinction?

Accepted Answer

C. Temporary maintenance of species in zoological gardens

Answer

A. Uncontrolled killing of species

Answer

B. Regular clearing of the forest vegetation

Answer

D. Regular irrigation of their natural habitats

Question 26

Ecology simply means the study of

Accepted Answer

B. the interrelationship between orgganisms and their environment

Answer

A. particular species of plants and animals

Answer

C. the properties of a habitat

Answer

D. the interrelationship between plants and animals

Question 27

A man's blood group is AB. What is the probability of the man giving birth to a child with blood group O?

Accepted Answer

A. 0%

Answer

B. 25%

Answer

C. 50%

Answer

D. 100%

Question 28

The process by which plants manufacture food from carbon dioxide and water using energy from the sun is called

Accepted Answer

B. photosynthesis

Answer

A. chemosynthesis

Answer

C. anabolism

Answer

D. catabolism

Question 29

Which of the following statements about the diaphragm of a mammal is not correct? it

Accepted Answer

C. is made of epithelial cells

Answer

A. separates the thorax and the abdomen

Answer

B. is a thick layer of muscle

Answer

D. is part of the human respiratory apparatus

Question 30

Which of the following organs are used for gaseous exchange in a mature toad?

Accepted Answer

D. Skin, lungs and mouth

Answer

A. Gills, lungs and eardrum

Answer

B. Lungs, mouth and eardrum

Answer

C. Mouth, skin and gils

Question 31

What happens to a plant if the shoot tip is cut off and replaced by an agar block containing auxin? it will

Accepted Answer

C. continue to grow normally

Answer

A. stop growing

Answer

B. grow rapidly

Answer

D. die completely

Question 32

In humans, excretion of hypertonic urine is associated with the

Accepted Answer

B. loop of Henle

Answer

A. distal convoluted tubule

Answer

C. bowman's capsule

Answer

D. proximal convoluted tubule

Question 33

Which of the following substances is not complex carbohydrate?

Accepted Answer

D. Glucose

Answer

A. Glycogen

Answer

B. Cellulose

Answer

C. Starch

Question 34

If a boy has blood type O and his mother has blood type A,what is the genotype of his father?

Accepted Answer

C. AO

Answer

A. BB

Answer

B. AA

Answer

D. AB

Question 35

Anaerobic respiration results in the production of

Accepted Answer

D. less energy than aerobic respiration

Answer

A. more energy than aerobic respiration

Answer

B. no energy

Answer

C. an equal amont of energy to aerobic respiration

Question 36

The main reason for immunizing children is to

Accepted Answer

C. stimulate the production of antibodies

Answer

A. destroy pathogens in their bodies

Answer

B. increase the production of white blood cells

Answer

D. simulate the production of antigens

Question 37

A substance present in the glomerular filtrate in the mammalian Kidney is

Accepted Answer

A. glucose

Answer

B. fibrinogen

Answer

C. albumen

Answer

D. blood platelets

Question 38

The opening of the guard cells of the epidermis in plants is by the process of

Accepted Answer

A. osmosis

Answer

B. diffusion

Answer

C. active transport

Answer

D. transpiration

Question 39

Conduction of water and mineral salts through the xylem vessels is enhanced because the xylem cells are

Accepted Answer

B. long, narrow tubes placed end to end

Answer

A. thickened with lignin

Answer

C. close to the endodermis

Answer

D. centrally placed in the roots

Question 40

Which of the following factors is likely to increase the rate of transpiration in plants?

Accepted Answer

C. An increase in leaf surface area to volume ratio

Answer

A. A reduction in the number of stomata per unit surface area

Answer

B. Increase in humidity around the leaves of plants

Answer

D. Removal of leaves from plant

Question 41

An animal which possesses scales nares and a backbone is likely to be a

Accepted Answer

B. lizard

Answer

A. toad

Answer

C. rat

Answer

D. bat

Question 42

Which part of the nephron is associated with ultra-filtration?

Accepted Answer

D. Bowman's capsule

Answer

A. Distal convoluted tubule

Answer

B. Proximal convoluted tubule

Answer

C. Collecting duct

Question 43

The function of the drone in a colony of bees is to

Accepted Answer

B. mate with the queen

Answer

A. clean the cells

Answer

C. protect the colony

Answer

D. lay eggs

Question 44

Which of the following associations is an example of epiphytism?

Accepted Answer

D. Fern on palm tree

Answer

A. Lice in the human hair

Answer

B. Mistletoe on citus fruit.

Answer

C. Egret on cow

Question 45

A scientist who was involved in the development of evolution theory is

Accepted Answer

A. lamarck

Answer

B. mendel

Answer

C. morgan

Answer

D. pasteur

Question 46

A man's who suffers from haemophilia marries a woman who is a carrier, what percentage of their children are likely to be haemophilie?

Accepted Answer

B. 50%

Answer

A. 25%

Answer

C. 75%

Answer

D. 100%

Question 47

Which of the following structures is used for respiration in insects?

Accepted Answer

D. Spiracles

Answer

A. Lungs

Answer

B. Thorax

Answer

C. Cuticle

Question 48

The gene that is only located on X-choromosome is said to be

Accepted Answer

C. sex-linked

Answer

A. expressed in females only

Answer

B. defective

Answer

D. expressed in males only

Question 49

Ascaris lumbricoides is a parasitic

Accepted Answer

B. round worm

Answer

A. flat worm

Answer

C. arthropod

Answer

D. elastic worm

Question 50

The correct arrangement of food classes of the same quantity in the order of magnitude of energy value in animals in descending order is

Accepted Answer

B. Fats and oils, carbohydrates, protein, water

Answer

A. Carbohydrates, fats and oils, water, protein

Answer

C. Water, fats and oils, carbohydrates, protein

Answer

D. Protein, fats and oils water and carbohydrates

Question 51

Which of the following is not a skeletal tissue?

Accepted Answer

A. Plasma

Answer

B. Chitin

Answer

C. Cartilage

Answer

D. Bone

Question 52

Which of the following structures is not essential in a wind pollinated flower?

Accepted Answer

D. Petal

Answer

A. Anther

Answer

B. Ovary

Answer

C. Stigma

2013 WAEC (WASSCE) Biology Past Questions

Questions

Frequently asked questions

How do I prepare for WAEC (WASSCE) Biology?

Where can I find WAEC (WASSCE) Biology past questions?

How close is the DeeepSolve CBT simulator to the real WAEC (WASSCE)?

Are the AI explanations accurate?