explains the theory of acquired characteristics
supports Jean Lamarck's theory of use and disuse
supports the idea of survival of the fittest
have been refuted by fossil records
implies that organisms modify their environment to survive
Correct answer is C
No explanation has been provided for this answer.
The role of dead organic matter in the soil is to
make the soil black
increase the mineral salt content
provide food for all living organisms
increase the acidity of the soil
make the soil more porous
Correct answer is B
No explanation has been provided for this answer.
Which of the following is the unit of transmission of hereditary traits in living organisms
Nucleus
Nucleolus
Gametes
Genes
Chromosomes
Correct answer is D
No explanation has been provided for this answer.
which of the following will be the effect of waterlogged top soil on the roots of plants?
the waterlogged soil will stimulate rapid growth of roots
there will be abundant supply of air for the growth of roots
The roots will rapidly absorb water
There willl be an accumulation of plant nutrients
the roots will be starved of air
Correct answer is E
No explanation has been provided for this answer.
birth rate
density
mortality
frequency
dispersion
Correct answer is B
No explanation has been provided for this answer.