The main reason for immunizing children is to
destroy pathogens in their bodies
increase the production of white blood cells
stimulate the production of antibodies
simulate the production of antigens
Correct answer is C
No explanation has been provided for this answer.
A pyramid of numbers is constructed by
comparing living and non-living things
measuring productivity
conducting census
labelling the living organisms
Correct answer is C
No explanation has been provided for this answer.
The bacteria that reduce nitrates in the soil into gaseous nitrogen are referred to as
nitrifying bacteria
denitrifying bacteria
putrefying bacteria
saprophytic bacteria
Correct answer is B
No explanation has been provided for this answer.
Which of the following represents the correct sequence, from the most complex of organisations?
Mitochondrion, Muscle, Alimentary canal, Rabbit, Heart, Neurone
Mitochondrion, Neurone, Muscle, Heart, Alimentary canal, Rabbit
Alimentary canal, Neurone, Muscle, Heart, Rabbit. Mitochondrion
Rabbit, Mitochondrion, Heart, Neurone, Alimentary canal, Muscle
Correct answer is B
No explanation has been provided for this answer.
Which of the following depicts the external features of a rat as mammal?
Long intestine and tail
Diaphragm and lungs
Milk and sweat production
Fur and whisker
Correct answer is D
No explanation has been provided for this answer.