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Biology
WAEC / WASSCE 2000
Variety of Organisms & Classification of Living Things
Which of the following resources is non-renewable?
A
Forest
B
Wildlife
C
Mineral deposits
D
Water
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 #19675)
Biology
WAEC / WASSCE 2000
Variation & Genetics (Heredity)
Character which falls to express itself in the first filial generation but emerges in the second is
A
heterozygote
B
homozygote
C
dominant
D
recessive
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 #19676)
Biology
WAEC / WASSCE 2000
Adaptation & Evolution
The concept of use and disuse of parts was postulated by
A
Darwin
B
Larmarck
C
Miller
D
Wallace
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 #19677)
Biology
WAEC / WASSCE 2000
Variation & Genetics (Heredity)
Which of the following represents Mendel’s second law of inheritance? The factors for two pairs of contrasting
characters are
A
dependent on each other
B
on homologous chromosomes
C
allelomorphic
D
inherited independently of each other
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 #19678)
Biology
WAEC / WASSCE 2000
Variation & Genetics (Heredity)
Which of the following terms is not associated with fingerprint and classification?
A
Whorl
B
Contour
C
Arch
D
Loop
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 #19679)
Biology
WAEC / WASSCE 2000
Variation & Genetics (Heredity)
During blood transfusion, agglutination could be prevented if a patient having blood group O is given blood
from group
A
AB
B
A
C
O
D
B
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 #19680)
Biology
UTME / JAMB 2000
Population Ecology, Habitats & Conservation
Solution
Which of the following structural features are adapted for uses other than water conservation?
A
Succulent stems
B
Scales in animals
C
Spines in plants
D
Feathers in birds
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Succulents are plants with thickened, fleshy parts that store water in arid climates or soil conditions.
Succulent stems have several adaptations that help them in ways other than water conservation, including:
Thermal capacity
Succulents have a high thermal capacity, which means they can tolerate high tissue temperatures. This is because their size, density, and water content help slow radiative heat loss at night.
Habitat
Succulents can provide shelter and habitat for reptiles like lizards and snakes. The cool, moist environment of their leaves and stems can be especially important in arid regions.
Shade
Succulents can provide shade to the plant by growing straight up. This shade slows down transpiration, which helps the plant keep its water longer.
Color
Some succulents have white-green stems to help reflect sunlight and prevent overheating.
Source: Official Exam / Past Question Archive
Biology
NECO SSCE 2000
Cell & Its Environment (Diffusion, Osmosis & Transport)
The streaming movement of cytoplasm observed in a freshly cut leaf of a water plant is termed
A
amoeboids
B
centrifugal motion
C
ciliary motion
D
cyclosis
E
osmosis
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 #41765)
Biology
NECO SSCE 2000
Basic Ecological Concepts, Ecosystems & Biomes
Solution
Which of the following sequences best illustrates a food chain in an aquatic habitat ?
A
algae → fungi → toad → snake
B
diatoms → tadpole → fish → kingfisher
C
grass → grasshopper → toad → whale
D
phytoplankton → fish → snake → kingfisher
E
zooplankton → tadpoles → fish → kingfisher
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
The food chain Diatoms → Tadpole → Fish → Kingfisher does illustrate an aquatic food chain, showing energy flow from producers (diatoms) through primary (tadpole eats algae/detritus), secondary (fish eats tadpole/invertebrates), and tertiary consumers (kingfisher eats fish) in a water-based habitat.
Source: Myschool Past Questions Archive (Record #41766)
Biology
NECO SSCE 2000
Cell Structure, Organization & Cell Division
Solution
The process which ensures that the chromosome number for each species of organism remains constant from generation to generation is called
A
fission
B
fusion
C
meiosis
D
mitosis
E
oogenesis
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Meiosis ensures that the chromosome number remains constant from generation to generation in sexually reproducing organisms. During meiosis, the chromosome number of a cell is reduced to half, resulting in the formation of gametes (sperm and egg cells) with a haploid number of chromosomes. When these gametes fuse during fertilization, the original chromosome number is restored in the offspring.
While both mitosis and meiosis contribute to maintaining a constant chromosome number across generations, they do so in different ways. Mitosis ensures that the number of chromosomes remains the same in somatic cells, while meiosis reduces the chromosome number by half in germ cells to prevent doubling of chromosomes during fertilization. Meiosis ensures that the chromosome number remains constant by reducing it in gametes and then restoring it through fertilization, while mitosis maintains the same chromosome number within individual organisms.
Source: Myschool Past Questions Archive (Record #41767)
Biology
NECO SSCE 2000
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Which of these pairs best illustrates symbiotic association?
A
dodder on green plants
B
ferns growing on palm trees
C
lice on hair of mammals
D
sea anemone attached to hermit crab
E
tick found on body of cow
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 #41768)
Biology
NECO SSCE 2000
Digestive System & Feeding Mechanisms
Which statement about decomposers is NOT true?
A
They are saprophytes
B
They carry on intra-cellular digestion
C
They facilitate the cleansing of the environment
D
They facilitate the recycling of nutrients
E
They form a link between autotrophs and heterotrophs
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 #41769)
Biology
NECO SSCE 2000
Transport System in Plants & Animals
Root pressure and the transpiration pull are biophysical processes which account for the?
A
ascent of water into leaves
B
exchange of gases at leaf surfaces
C
movement of manufactured food from leaves to storage tissues
D
opening and closing of stomata
E
Release of energy from glucose molecules
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 #41770)
Biology
NECO SSCE 2000
Variety of Organisms & Classification of Living Things
An organism existing at the colonial level of life is
A
chlamydomonas
B
euglena
C
paramecium
D
spirogyra
E
volvox
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 #41790)
Biology
NECO SSCE 2000
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
A common characteristic of ALL living things is
A
gametogenesis
B
hibernation
C
photosynthesis
D
phototropism
E
respiration
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 #41793)