WAEC - Biology (2016)
1
Flaccidity in plants is associated with
2
Which of the following substances is not usually present in the urine of a healthy person?
3
Lateral meristem in flowering plants is found in the
4
The cells and tissues of the nose, throat, chest diaphragm and lungs from the
5
The exchange of gases between the environment and the respiratory organs of vertebrates is referred to as
6
The maintenance of a constant internal environment in an organism is known as
7
Which of the following organs is responsible for the production of insulin?
8
Which of the following actions is NOT a voluntary action?
9
Which of the following parts of the ear does NOT contain endolymph?
10
The steps below are involved in the testing of a leaf for starch. Study them carefully and answer the question:
I. Decolorize them
II. Dip decolorized leaf in warm water
III. Place leaf in boiling water
IV. Add iodine solution
The CORRECT order for the test is?
11
The best time to pluck the leaf for the experiment is
پاسخ دهید(A)
after being exposed to sunlight
12
The steps below are involved in the testing of a leaf for starch. Study them carefully and answer the question:
I. Decolorize them
II. Dip decolorized leaf in warm water
III. Place leaf in boiling water
IV. Add iodine solution
The best time to pluck the leaf for the experiment is?
پاسخ دهید(A)
after being exposed to sunlight
13
In which of the plant tissues are guard cells located?
14
The association between two organisms in which one of the organisms gains and the other loses is referred to as
15
The function of the villi in the alimentary canal is to
پاسخ دهید(D)
increase the surface area for absorption
16
The function of the villi in the alimentary canal is to
پاسخ دهید(D)
increase the surface area for absorption
17
The function of the villi in the alimentary canal is to
پاسخ دهید(D)
increase the surface area for absorption
18
The function of the villi in the alimentary canal is to
پاسخ دهید(D)
increase the surface area for absorption
19
Which of the following structures is not an organ of the disgestive system?
20
In ecology, a community refers to
پاسخ دهید(B)
groups of different organisms living in a habitat
21
The direction wind is determined by
22
Food webs are complex because
پاسخ دهید(A)
the number of producers are large
23
Special modification which enable an organism to survive in its habitat is known as.
24
Which of the following relationships does not involve two organisms?
25
Overcrowding in a population does not result in
26
A pandemic is an outbreak of disease that
27
The rational and prudent use of natural resources is known as
28
Which of the following natural resources cannot be conserved?
29
Which of the following actions supports conservation? To
پاسخ دهید(A)
protect endangered species
30
A noticeable physical appearance of individuals of the same species is called
31
A blend of inherited and acquired characteristics shows
32
A sick baby was successfully transfused with blood from the father who has blood group AB.
What is the group of the the sick baby?
33
A cross between two parents produced four offspring's with blood groups AB, BB, BO and AO. what is the blood group of their parents?
34
Scientists who study genetics are known as
35
Which of the following scientists did not contribute to the development of genetics?
36
Which of the following terms is associated with natural selections?
37
In which of the following insects is group instinct not displayed?
38
The inability of an organism to adapt to its habitat can lead to
39
Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.
The source of the nitrates in the diagram is termed
40
Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.
The phenomenon in the diagram is termed
41
Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.
Another cause that could lead to the phenomenon in the diagram is
42
The illustration above represents a cross between a colour blind male and normal female.
Study it carefully and answer the questions.
What is the genotype ratio of carrier females to normal males in the cross?
43
The illustration above represents a cross between a colour blind male and normal female.
Study it carefully and answer the questions.
Which of the genotypes are carriers of colour blindness?
44
The type of placentation illustrated in the diagram above is
45
Plant A was seen to appear as Plant B after seven hours
Study the above diagrams carefully and answer the questions.
The term that can be used to describe what happened to Plant A after seven hours is
