The type of interaction shown is referred to as
interspecific competition
intraspecific competition
mutualism
cooperation
Correct answer is A
No explanation has been provided for this answer.
The adult of iii is a vector of
sleeping sickness
river blindness
cholera
elephantiasis
Correct answer is D
No explanation has been provided for this answer.
An economic importance of the organism represented by IV is that
it transmits water borne diseases to humans
it is destructive to farm crops
its faeces pollutes drinkng water
it helps control mosquito larvae
Correct answer is B
No explanation has been provided for this answer.
Which of the animals in the diagram represents the oldest creatures in evolutionary history
iii
ii
i
iv
Correct answer is D
Embryos of vertebrates can be used to show evolutionary trends:
- Fishes → Amphibians → Reptiles → Birds → Mammals
In the diagram, the function of the correcting lens is to
diverge incoming rays
converge incoming rays
reflect incoming rays
screen incoming rays
Correct answer is B
The simplest, cheapest, and safest way to correct long sightedness is with glasses.
Convex prescription lenses (called plus lenses) are used to bend light rays slightly inwards / converge them to give a little bit of additional focusing power to the eye.
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