Question 1 of 20 52 total questions
Darwin noticed that organisms in similar habitats across the world looked alike. This illustrates
A convergent evolution
B adaptive radiation
C co-evolution
D descent with modification
A scientist who was involved in the development of evolution theory is
A lamarck
B mendel
C morgan
D pasteur
Which of the following features is used by chameleons to escape predation?
A fearsome appearance
B coiling tail
C offensive smell
D adaptive colouration
The function of the drone in a colony of bees is to
A clean the cells
B mate with the queen
C protect the colony
D lay eggs
Which of the following structures is only formed during cell division in animal cells?
A Cell memberane
B Cytoplasm
C Centrosome
D Ribosome
Which of the following traits may be considered in marriage counseling?
A Height
B Fingerprints
C Rhesus factor
D Colour of skin
A man's who suffers from haemophilia marries a woman who is a carrier, what percentage of their children are likely to be haemophilie?
If a boy has blood type O and his mother has blood type A,what is the genotype of his father?
The gene that is only located on X-choromosome is said to be
A expressed in females only
B defective
C sex-linked
D expressed in males only
When a man who is Rh-positive marries a woman who is Rh-negative, there will be incidence of
A still births
B sicklers
C albinos
D living children
A man's blood group is AB. What is the probability of the man giving birth to a child with blood group O?
In genetics, linkages refer to the linking of genes of the
A same chromosomes
B different chromosomes
C same nucleus
D different nuclei
Which of the following statements is not a reason for conserving wildlife?
A Attraction of tourists into the country
B Serving as a source of food
C Serving as a source of income
D increasing the amount of rainfall
Which of the following human activities would help prevent endangered species from extinction?
A Uncontrolled killing of species
B Regular clearing of the forest vegetation
C Temporary maintenance of species in zoological gardens
D Regular irrigation of their natural habitats
The absence of alimentary canal in the parasitic flatworm can be attributed to the fact that
A its body does not feed
B it has no enzymes
C its body absorbs digested food
D it has suckers on the scolex
The following organisms are pests of plants except
A birds
B nematodes
C bacteria
D rodents
Ascaris lumbricoides is a parasitic
A flat worm
B round worm
C arthropod
D elastic worm
Rhizobium which lives in the root nodules of leguminous plants is an example of the association known as
A commensalism
B epiphytism
C mutualism
D saprophytism
The main reason for immunizing children is to
A destroy pathogens in their bodies
B increase the production of white blood cells
C stimulate the production of antibodies
D simulate the production of antigens
A pyramid of numbers is constructed by
A comparing living and non-living things
B measuring productivity
C conducting census
D labelling the living organisms
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