Second Term Biology Examination Question for SS1 Class

CLASS: S.S. 1                                                                                  
Answer all questions
Answer all questions in this section
•   The farming practice by which an exhausted farm land is left
for a number of years before cultivation is known as (a) crop rotation (b)
monocropping (c) mixed cropping (d) bush fallowing
Vitamin C which is water soluble is (a) cabalamine (b)
Pyridoxine (c) ascorbic acid (d) riboflavine
•        Which of the following food substances turns bright red when
warmed with sudan iii solution (a) starch (b) reducing sugar (c) protein (d)

•        Loamy soil is the best type of soil for crop production because
(a) it has a high percentage of clay which prevents leaching (b) it has high
humus content (c) it is porous and has good water retention capacity (d)
gravels which obstruct implements are absent from it
•     The importance of practicing crop – rotation in agriculture(a) control soil erosion (b) maintain the fertility of the soil (c) improve
nutritional value of crops (d) ensure growth of cash crops
•      The colour that is associated with a positive iodine test is
(a) brown (b) red (c) blue black (d) yellow
The term community is defined as (a) the different groups of
plants and animals in the same area and interacting with each other (b) the
consumers and produces living in a habitat (c) living organisms interacting
with physical factors of a environment (d) animals which matually derive
benefit from their association
Which of the following physical factors is likely to affects
the distribution of plants in a pond? (a) light (b) humidity (c) wind (d)
Which of the following is used to measure wind speed? (a)
thermometer (b) barometer (c) hygrometer (d) anemometer
Which of the following statement about the transfer of
energy in an ecosystem is correct? (a) energy increases at higher trophic
levels (b) more organisms can be supported at higher levels (c) there are fewer
organisms at lower trophic levels (d) energy is lost at each trophic level
Which of the following is not recycled in an ecosystem (a)
carbon (b) energy (c) water (d) nitrogen
The following effects are associated with deforestation
except (a) Gully erosion (b) extinction of plant species (c) migration of wild
life (d) increase in rain fall
Pests can be controlled without the subsequent danger of
polluting the ecosystem by (a) introducing a population of species similar to the
pest (b) increasing the population of the natural enemies of the pest (c)
eliminating the natural enemies of the pest (d) keeping the population of
natural enemies of the pest constant
The number of individual in a habitat in relation to the
unit space available to each organism is referred to as (a) birth rate (b)
density (c) mortality (d) frequency
A hygrometer is used for measuring (a) relative humidity (b)
specific gravity (c) light intensity (d) turbidity
Which of the following is used for the collection of small
insects from soil, leaf litter andcrevices? (a) pooter (b) quadrat (c) sweep
net (d) drag net
Biosphere is best described as (a) all parts of the earth
where life exists (b) the non – living part of an ecosystem (c) all components
of the ecosystem (d) all the members of a single species in a habitat
Plants found in a aquatic habitat are generally known as (a)
epiphytes (b) halophytes (c) xerophytes (d) hydrophytes
Which of the following methods is used in food preservation
for a long period? (a) keeping the food in a store (b) adding oil to it (c)
exposing food to fresh air (d) salting and drying the food
The habitat of an organism coupled with it’s functional role
is termed (a) Niche (b) Biosphere (c) Hydrosohere (d) Atmosphere
Classify plants according to their life cycles and give two
examples each
b. List the six classes of food, their source, functions and
two examples each
List six pests of crops
b. Discuss two of the pests under the following
Crops attacked
Economic Importance
Define Ecology
 Write / explain the
Ecological Niche
b. Define the term Population
Describe how population studies can be conducted in a school
What is soil?
b. Name the types of soil
Explain the factors which affect the water holding capacity
of soil
Describe an experiment to determine the water retaining
capacity of soil type