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Biology
WAEC / WASSCE 1990
Reproduction in Plants & Animals
What is the difference between viviparous and oviparous animals?
A
Possession of yolked eggs
B
Laying of unfertilized eggs
C
Possession of yolkless eggs
D
Protection of eggs from predator
E
Laying and brooding of eggs
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #17319)
Biology
WAEC / WASSCE 1990
Reproduction in Plants & Animals
The structure of the embryo which develops and makes contact with the uterine
wall is known as the
A
umbilical cord
B
placenta
C
allantois
D
amnion
E
chorion
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #17320)
Biology
WAEC / WASSCE 1990
Digestive System & Feeding Mechanisms
The organ located in the mammalian abdominal cavity just below the diaphragm
and lying on top of the stomach is the
A
bladder
B
intestine
C
liver
D
pancreas
E
chorion
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #17321)
Biology
WAEC / WASSCE 1990
Reproduction in Plants & Animals
Which of the following is the effect of using artificial pollination in plant breeding?
A
Production of healthy crops
B
Improvement of the variety of crops
C
Making crops susceptible to diseases
D
Lengthening the maturity time of crops
E
Encouraging competition amongst crops
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #17322)
Biology
WAEC / WASSCE 1990
Reproduction in Plants & Animals
A dry indehiscent fruit containing one seed and possessing a hairy pappus is described as
A
a nut
B
a drupe
C
a cypsela
D
a follicle
E
an achene
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #17323)
Biology
WAEC / WASSCE 1990
Variety of Organisms & Classification of Living Things
Thunderstorm can be beneficial to plants because it
A
kills the pest that attacks crops
B
destroys some of the major crops
C
adds nitrates to the soil
D
adds lime to the soil
E
makes rain water available to plants
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #17325)
Biology
WAEC / WASSCE 1990
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following is a nitrifying bacterium
A
Nitrobacter
B
Rhizobium
C
Azotobacter
D
Clostribium
E
Nitrosomonas
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #17331)
Biology
WAEC / WASSCE 1990
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Which of the following reagents is used for the test for starch?
A
Million’s reagent
B
Fehling’s’ solution
C
Sudan III
D
Iodine solution
E
Benedict’s solution
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #17332)
Biology
WAEC / WASSCE 1990
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Which of the following is an autotrophic mode of nutrition?
A
Chemosynthesis
B
Saprophytism
C
Parasitism
D
Symbiosis
E
Commensalism
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #17333)
Biology
WAEC / WASSCE 1990
Variety of Organisms & Classification of Living Things
Solution
Which of the following is not a way of reducing air pollution?
A
Siting factories and power stations away from residential areas
B
Building tall factory chimneys
C
Passing waste gases through filters and absorbers
D
Using lead-free petrol in cars
E
Recycling tins, cans and bottles
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
All the options contribute to the reduction of air pollution except option E which does not in any way reduce air pollution.
Source: Myschool Past Questions Archive (Record #17334)
Biology
WAEC / WASSCE 1990
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following factors is not associated with aquatic habitat?
A
Temperature
B
Light intensity
C
Turbidity
D
Wave action
E
Humidity.
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #17335)
Biology
WAEC / WASSCE 1990
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following types of soil has the highest water-retaining capacity?
A
Clay
B
Laterite
C
Loam
D
Gravel
E
Sand
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #17336)
Biology
WAEC / WASSCE 1990
Basic Ecological Concepts, Ecosystems & Biomes
Changes in energy flow between organisms in a habitat can be represented by a
A
pyramid of biomass
B
pyramid of numbers
C
pyramid of energy
D
food chain
E
food web
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #17337)
Biology
WAEC / WASSCE 1990
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following processes is not involved in the carbon cycle?
A
Burning
B
Decay
C
Transpiration
D
Respiration
E
Photosynthesis
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #17338)
Biology
WAEC / WASSCE 1990
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following processes are involved in a water cycle?
A
Evaporation, condensation and precipitation
B
Evaporation, percolation and transpiration
C
Evaporation and precipitation
D
Evaporation and transpiration
E
Precipitation and condensation.
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #17339)