WAEC Biology 2014 Past Questions

A.substances from a region of high concentration to a region of low concentration
B.substances from a region of low concentration to a region of high concentration across a living cell membrane
C.substances across a living cell membrane using energy from the cell
D.movement of molecules in a medium

Objective

Question 4

(a)(i) Explain the term co-ordinance.

(ii) Calculate the number of individuals with co-dominant blood group.

(iii) What is the total number of individuals in the table that are able to donate blood to an accident victim with blood group B?

(b) A man whose blood group is heterozygous A is married to a
woman whose blood group is AB. With the aid of a genetic diagram, suggest the possible blood groups of their children.

A survey to determine blood groups was carried out on 250 people living in a community. The results are represented in the table below.

Blood group	Percentage
A	8.0
B	14.0
AB	32.8
O	45.2

Theory

Question 5

Which of the following cell inclusions can destroy other cell organelles?

A.Centriole
B.Ribosome
C.Lysosome
D.Mitochondrion

Objective

Question 5

(a) State five reasons why animals move from place to place.

(b) State one function each of the following structures found in plants:
(i) epidermis
(ii) phloem
(iii) sclerenchyma.

(c) Give two examples each of the following types of organisms:
(i) parasitic plants
(ii) saprophytes.

(d) State two adaptive features of plants which inhabit salt water swamp.

(e) State two factors each which result in
(i) increase
(ii) decrease, in population density.

(f) Mention four ways in which modern agricultural activities may threaten the survival of species.

(g) State three reasons why mitosis is important to living organisms

(h) State three causes of food spoilage.

Theory

Question 6

In which of the following yam tissues will osmosis occur?

A.Boiled and peeled
B.Raw and peeled
C.Boiled and unpeeled
D.Roasted and peeled

Objective

Question 7

The following events occur during mitosis in a cell:
I. Chromatids separate;
II. Chromosomes become visible;
III. Chromosomes align at the equator
IV. Cytoplasm divides (Cytokinesis):
The correct sequence of the events is

A.lll, ll,lV,l.
B.ll, lll, l,lV
C.ll, l, lll, lV
D.II, IV, I, III.

Objective

Question 8

Which of the following statements about asexual reproduction is correct? It

A.always involves one parent but the offspring is genetically different from the parent.
B.may involve two parents but the offspring is always identical to one parent
C.always involves one parent and the offspring is genetically identical to the parent
D.involves two parents but the offspring is not genetically identical to any of the parents

Objective

Question 9

Which of the following processes is not a function of the mammalian skin?

A.Regulation of body temperature
B.Reception of external stimuli
C.Excretion
D.Gaseous exchange

Objective

Question 10

The legs of an accident victim with a fractured vertebral column and injured spinal cord could not be raised because

A.impulses fromreceptors in the legs cannot travel to the brain
B.impulses from the brain cannot travel to the legs
C.chemical substances will be released at synapses in the central nervous system
D.reflexx actions cannot take place in the legs

Objective

Question 11

Which of the following conditions in flowering plants enhance self-pollination?

A.Cleistogamy
B.Heterostyly
C.Protandry
D.Protogyny

Objective

Question 12

The inability to maintain proper balance of the body in humans may be due to a defect in the

A.cochlea
B.Euastachian tube
C.Semi-circular canals
D.oval window

Objective

Question 13

The following substances pass into the blood of the foetus from the mother's blood via the placenta except

A.carbon dioxide
B.glucose
C.viruses
D.antibodies

Objective

Question 14

An inferior ovary of a flower is situated

A.below the floral parts
B.above the floral parts
C.at the same level with all the floral parts
D.at the centre of the floral parts

Objective

Question 15

Older parts of plant roots do not normally absorb water because

A.they lack xylem
B.they have small surface area
C.the phloem is dead
D.they lack root hairs

Objective

Question 16

The amount of starch in a germinating seed decreases because the starch is used up

A.for respiration and building up of cells
B.to build cellulose cell wall
C.to develop meristematic tissues
D.for the production of enzymes

Objective

Question 17

The purpose of treating poor soil with lime is to increase the quantity of

A.nitrogen
B.phosphorus
C.carbohydrates
D.sulphur

Objective

Question 18

A meal consisting of yam and a lot of vegetables is not balanced because it does not contain

A.carbohydrates
B.proteins
C.vitamins
D.minerals

Objective

Question 19

In a Biuret test , some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive result?

A.mercurous nitrate
B.copper sulphate
C.sodium carbonate
D.silver nitrate

Objective

Question 20

A characteristic feature of plant parasites is the

A.possession of holdfast
B.possession of rhizoids
C.development of hanging roots
D.development of haustoria

Objective

Question 21

The part of a leguminous plant where bacteria like Azotobacter can be found is

A.at the nodes of the stem
B.at the internodes
C.in the root nodules
D.in the spongy mesophyll

Objective

Question 22

The following habitats can be found in West Africa except

A.mangrove swamp
B.sahel savanna
C.savanna grassland
D.temperate grassland

Objective

Question 23

The following adaptations are associated with the flight of birds except

A.reduced body weight
B.streamlined shape
C.presence of powerful muscles
D.clawed digits

Objective

Question 24

The difference between a community and population is

A.a community is made up of organisms of the same species while a population is made up of organisms of different species
B.a community is made up of populations of living organisms while a populations is made up of organisms of the same secies
C.an ecological niche does not exist in the community but it does in a population
D.a community attracts competition but a population does not

Objective

Question 25

Which of the following statements about the circulation of water in nature is not correct? Water