Question 1 of 20 93 total questions
In the diagram, the young proglottid is represented by
In the diagram, the part responsible for photosynthesis is labelled
In the diagram, the part labelled II is the
A nucleus
B eyespot
C basal granule
D contractile
Lamarck's theory of evolution is based on the fact that
A organisms acquire genes from their parents
B organisms pass on acquired characters to their offspring
C characteristics of organisms are determined by the creator
D characteristics of organisms are the sum of their parents characters
Which of the following organisms is not a social insect?
A Termites
B Ants
C Grasshoppers
D Bees
The main reason for nuptial flight in termites is to
A escape unfavourable conditions
B search for food
C form new colonies
D communicate with one another
In dihybrid inheritance, Mendel considered
A a pair of contrasting characters
B two pairs of contrasting characters
C three pairs of contrasting characters
D four pairs of contrasting characters
Which of the following diseases can be inherited?
A pneumonia
B AIDS
C sickle cell anaemia
D goitre
The F1 generation of a cross between a red cock and white hen were all red because the gene for the
A white colour did not segregate
B red colour was dominant
C white colour was dominant
D red colour was recessive
A small stem from a hibiscus plant was placed in a nutrieent medium, and it developed into a new plant. The new plant was reproduced
A asexually with different genotype from the parent plant
B sexually with a different genotype from the parent plant
C asexually with the same genotype as the parent plant
D sexually with the same genotype as the parent plant
Which of the following statements about chromosomes is correct?
A All the chromosomes of a species are the same in shape
B the bear number present in a species is constant
C they are neatly arranged in the eytoplasm
D They bear ribosomes on their outer membranes
Which of the following traits is not a morphological variation in humans?
A Ability to taste PTC
B Colour
C Fingerprints
D Size
Differences in characteristics that exist among individuals of the same species is referred to as
A genetics
B dominance
C hybird
D variation
Characteristics that exhibit continuous variation are generally controlled by
A a single gene
B recessive genes
C epistatic interactions
D multiple genes
Which of the following statement is not a reason for banning bush burning? It
A allows for quick regrowth of grasses
B Kills soil microorganisms.
C leaves the soil bare of vegetation
D burns off organic soil nutrients
Which of the following natural resources is non-renewable?
A Water
B Coal
C Forest
D Air
Which of the following substances constitute domestic waste?
A l only
B lll only
C lV only
D ll and V only
l. Fertilizer II. Insecticides III. Sewage IV. Crude oil V. Sulphur dioxide. The atmosphere can be polluted by
A l only
B lll only
C lV only
D ll and lV only
The following organisms are consumers except
A earthworm
B spirogyra
C bacteria
D Rhizopus
Which of the following statements about the circulation of water in nature is not correct? Water
A constantly evaporates from seas, rivers, lakes and soil
B vapour rises, cools, condenses and precipitates as rain and dew
C removed from ocean is permanently lost
D is lost in plants by transpiratin and decay
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