WAEC - Biology (2019)
1
Which of the following structures will NOT be found in the nucleus of a cell?
2
An example of organ level of organization is _______
3
A structural similarity between Parameciumn and Amoeba is the presence of______
4
The classes of plants the root systems in diagrams I and II above represent respectively are______________
Απάντηση(B)
Monocotyledoneae and Dicotyledoneae
5
The diagram above is an illustration of a stage in a biological process. Study it and answer this question
What stage of cell division is illustrated in the diagram?
6
The part labelled I is the________
7
The rate of diffusion of molecules between two media will be higher if_________?
Απάντηση(C)
the difference in concentration of the two media is high
8
Anaerobic respiration in the organism illustrated in the diagram above produces carbon dioxide and________
9
Underground storage stems which grow horizontally in the soil are_______
10
Muscle fatigue in the body of an athlete is due to__________
Απάντηση(C)
accumulation of lactic acid
11
The heart can beat continuously without being fatigued because it is composed of________
12
The products of tissue respiration are_________
Απάντηση(D)
water, carbon dioxide, and energy
13
Excretory products in plants responsible for the discoloration of flowers are called__________
14
The process of maintaining a steady internal environment is known as__________
15
Which of the following statements is not true about hormones?
Απάντηση(A)
Their responses are voluntary
16
The diagram above is an illustration of a human brain. Study it and answer this question
The part labelled I is the_________
17
The function of the part labelled II is that it controls_______
18
To focus on a distant object, the ciliary muscle of the eye______
Απάντηση(D)
relaxes and the eye lens gets thicker
19
The main function of the amniotic fluid is for______________
Απάντηση(B)
protection of the foetus from shock
20
The diagram above is an illustration of the longitudinal section of a flower. Study it and answer this question
Which part of the flower is responsible for the protection of young flower buds?
21
The essential parts of the flower are labelled_______
22
Deficiency in insulin could lead to________
23
Which of the following forms of energy is utilized during photosynthesis?
24
Light is excluded from a water culture experiment in order to________
Απάντηση(D)
prevent the growth of algae
25
The major mineral present in the shell of Molluscs is________
26
The digestion of proteins starts in the______
27
Tooth decay is usually caused by___________
Απάντηση(C)
the bacteria ín the mouth that metabolize sugar to acids
28
The conversion of ammonium salts into nitrates is called_______
29
The salinity of a brackish habitat________
Απάντηση(D)
increases during the dry season
30
If 90 ants are found in a field with a total area of 100 m. what is the population density of the ants?
31
The complex relationship between the members of a community and their physical environment is known as________
32
The specific role of a species within íts environment is known as its_________
33
Which of the following soil fertility improvement methods will have the most negative effect on the ecosystem if not controlled?
Απάντηση(A)
Application of N-P-K fertilizer
34
Organisms in an ecosystem are usually grouped according to their trophic level into__________
35
In the pyramid of energy illustrated above, the organism with the least amount of transferred energy is___________
36
Tall trees with unbranched trunks which grow above the upper storey of the forest are commonly referred to as _____
37
Maize grains are best stored against insect attacks by__________________
38
Cholera is mostly spread by_______
39
Which of the following resources is renewable?
40
Which of the following roles is not performed by a government agency responsible for forest maintenance?
Απάντηση(D)
Regulating mining activities in the forest
41
Which of the following factors is not a source of variation in living organisms?
42
Individuals with blood group AB can donate blood to individuals with blood group(s)___________?
43
The diagram above is an illustration of a process occurring in a living animal cell. Study it and answer this question
The process occurs in the _______
44
The process is called_______
45
Which of the following nucleotides is not found in the DNA molecules?
