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.
An old man is likely to be long-sighted because age affects the
optic nerves
retina
ciliary muscles
cornea
aqueous humour
Correct answer is B
No explanation has been provided for this answer.
In a tropical rain forest, non-epiphytic ferns and allies occur as
middle story species
upper story species
shade-loving species
emergent species
Correct answer is C
No explanation has been provided for this answer.