Which of the following is a measure for the control of bilharzia?
Cutting low brushes around homes
Application of molluscicides in water bodies
Screening windows and doors with mosquito nets
Application of herbicides in water bodies
Correct answer is B
No explanation has been provided for this answer.
Which of the following food chains is in the correct sequence?
Weeds → Tadpole → Beetles → Fish → Man
Weeds → Tadpole → Fish → Beetles → Man
Tadpole → Beetles →Weeds → Man → Fish
Man → Fish → Beetles → Tadpole → Weeds
Fish → Beetles → Weeds → Man → Tadpoles
Correct answer is A
No explanation has been provided for this answer.
A relationship between living organisms which is of mutual benefit is
parasitism
saprophtism
ecosystem
symbiosis
commensalism
Correct answer is D
No explanation has been provided for this answer.
Colonization of a bare rock surface is termed
evolution
specification
primary succession
secondary succession
Correct answer is C
No explanation has been provided for this answer.
motor neurons
effector muscles
dendrites
sensory neurons
synapses
Correct answer is D
No explanation has been provided for this answer.