2014 - WAEC Biology Past Questions and Answers - page 2
11
Which of the following conditions in flowering plants enhance self-pollination?
A
Cleistogamy
B
Heterostyly
C
Protandry
D
Protogyny
Ask EduPadi AI for a detailed answer
Share this 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
Ask EduPadi AI for a detailed answer
Share this 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
Ask EduPadi AI for a detailed answer
Share this 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
Ask EduPadi AI for a detailed answer
Share this 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
Ask EduPadi AI for a detailed answer
Share this 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
Ask EduPadi AI for a detailed answer
Share this question
17
The purpose of treating poor soil with lime is to increase the quantity of
A
nitrogen
B
phosphorus
C
carbohydrates
D
sulphur
Ask EduPadi AI for a detailed answer
Share this 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
Ask EduPadi AI for a detailed answer
Share this 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
Ask EduPadi AI for a detailed answer
Share this 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
Ask EduPadi AI for a detailed answer
Share this question