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Biology
NECO SSCE 2001
Science of Living Things
The tissue which carries organic food from its site of production to all other parts of the plant is called the
A
Cambium
B
Epidermis
C
Phloem
D
Sclerenchyma
E
Xylem
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 #41962)
Biology
NECO SSCE 2001
Science of Living Things
Soil fertility is NOT conserved by
A
continuous cropping
B
contour ridging
C
Crop rotation
D
Mulching
E
Terracing
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 #41964)
Biology
NECO SSCE 2001
Science of Living Things
The genotype of a species with respect to a particular trait can be determined by carrying out
A
a back cross with a pure stock known to be recessive for that trait
B
a cross between two F, generations that are heterozygous for the trait
C
a testcross with a pure stock known to be dominant for the trait
D
in-breeding among the members of the species
E
out-breeding with an exotic variety of the species
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 #41967)
Biology
NECO SSCE 2001
Science of Living Things
The vector of trypanosome is the
A
black fly
B
cockroach
C
house –fly
D
mosquito
E
Tsetse fly
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 #41969)
Biology
NECO SSCE 2001
Science of Living Things
Which world biomes can be found in Nigeria?
A
Afro-alpine
B
Coniferous forest
C
Dessert
D
Savannah
E
Tundra
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 #41972)
Biology
NECO SSCE 2001
Science of Living Things
The organelle which is contractile in function in Euglena is the
A
Chloroplast
B
Eyespot
C
Gullet
D
Myoneme
E
Paramylon
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 #41973)
Biology
NECO SSCE 2001
Science of Living Things
Solution
Which organism is NOT a filter feeder?
A
Adult mosquito
B
Copepod
C
Mosquito larva
D
Oyster
E
Whale
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure.
Mosquito larvae are usually filter-feeders. They have fan-like mouth brushes that sweep water at their mouths from in front of them.
In this method they filter out small particles of decaying material and microorganisms, which they then eat.
While adult mosquitoes are one of many species of fluid-feeding insect.
Source: Myschool Past Questions Archive (Record #41974)
Biology
NECO SSCE 2001
Science of Living Things
Solution
What type of association does an epiphyte on a tree trunk illustrate?
A
Cannibalism
B
Commensalism
C
Parasitism
D
Saprophytism
E
Symbiosis
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Commensalism is a type of population interaction in which one species is benefited and another is neither harmed nor benefit. In this, epiphyte is benefited as it receives support from the tree and the tree is neither harmed nor benefited.
Source: Myschool Past Questions Archive (Record #41977)
Biology
NECO SSCE 2001
Science of Living Things
Solution
Which is NOT a social animal?
A
Ant
B
Bee
C
Butterfly
D
Termite
E
Wolf
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Social insects work together to find food and other resources and to communicate their findings to others in the community. They are capable of providing defense to their home and resources when under attack. Social insects also can displace other insects, and even larger animals, for territory and food.
-Social insects are the ants, bees, wasps, and termites that have organized societies.
-Butterflies are mostly solitary creatures, though some species migrate in massive numbers.
-Wolves are very social animals. They live and hunt together in groups called packs. A wolf pack is really just another name for a family of wolves
Source: Myschool Past Questions Archive (Record #41979)
Biology
NECO SSCE 2001
Science of Living Things
Solution
Which is NOT a social animal?
A
Ant
B
Bee
C
Butterfly
D
Termite
E
Wolf
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Social insects work together to find food and other resources and to communicate their findings to others in the community. They are capable of providing defense to their home and resources when under attack. Social insects also can displace other insects, and even larger animals, for territory and food.
-Social insects are the ants, bees, wasps, and termites that have organized societies.
-Butterflies are mostly solitary creatures, though some species migrate in massive numbers.
-Wolves are very social animals. They live and hunt together in groups called packs. A wolf pack is really just another name for a family of wolves
Source: Official Exam / Past Question Archive
Physics
NECO SSCE 2000
Heat Energy & Temperature
Solution
A gas occupies a certain volume at 27°C. At what temperature will its volume be twice times the original volume assuming that its pressure remains constant?
A
54°C
B
108°C
C
150°C
D
327°C
E
600°C
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
\(\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\)
Given \(V_{2} = 2V_{1}\)
\(T_{1} = 27^\circC + 273 = 300k\)
\(\frac{V_{1}}{300} = \frac{2V_{1}}{T_{2}}\)
\(\frac{1}{300} = \frac{2}{T_{2}} \implies T_{2} = 600k or 327^\circC\)
Source: WAEC / JAMB / NECO Classroom Archive (Record #42690)
Physics
NECO SSCE 2000
Refraction of Light
Solution
Which of the following pairs of light rays shows the widest separation in the spectrum of white light?
A
Red and blue
B
Orange and green
C
Red and indigo
D
Violet and green
E
Yellow and red
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
This is called dispersion . A beam of white light passes through a prism and changes into a spectrum of colours.
The spectrum is a band of seven colours which is obtained by splitting of white light by a glass prism. The order of colours from the lower end of spectrum is violet (V), indigo (I), blue (B), green (G), yellow (Y), orange (O), and red (R).
Source: WAEC / JAMB / NECO Classroom Archive (Record #42787)
Physics
NECO SSCE 2000
Mechanics and Properties of Matter
Solution
A particle of charge q and mass m moving with a velocity v enters a uniform magnetic field B in the direction of the field. The force on the particle is
A
Bqv
B
Bq\(\frac{v}{m}\)
C
Bqvm
D
mv\(\frac{B}{q}\)
E
\(\frac{mv}{Bq}\)
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
The formula for Force on the particle is Bqv.
Source: Myschool Past Questions Archive (Record #42674)
Physics
NECO SSCE 2000
Heat Energy & Temperature
Solution
The helium isotope \(^3_2He\)
A
has three pro tons and two neutrons
B
has two protons and one neutron
C
has two protons and three neutrons
D
has one proton and two neutrons
E
cannot exist because it has the same mass number as tritium
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Based on nuclear physics, the correct answer is B: \(^3_2\)He has two protons and one neutron.
Source: Myschool Past Questions Archive (Record #42682)
Physics
NECO SSCE 2000
Mechanics and Properties of Matter
Solution
When a metal is heated to a high temperature, electrons are emitted from its surface. The process is known as
A
photoelectric effect
B
thermionic emission
C
field emission
D
secondary emission
E
radioactive emission
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
The process by which free electrons are emitted from the surface of a metal when external heat energy is applied is called thermionic emission.
Source: Myschool Past Questions Archive (Record #42683)