The single, most dominant feature which distinguishes a living organism from a non-living material, is that the living organisms can produce their own kinds whereas a non-living material cannot!! Thus, the biggest strength of a living organism is its inherent ability or desire to perpetuate, i.e., reproduction. It is also essential for the survival of species on this earth.
There are basically two ways by which animals can reproduce : (i) asexual reproduction ('A' absence, i.e., absence of sexual method): It is a type of reproduction in which new individuals are produced by non-sexual or vegetative methods, without involving the two sexes and (ii) sexual reproduction: This is another type of reproductive method in which male and female sex cells (gametes) fuse to form a new individuals (zygote). It is seen in higher animals like horse, dong, man, cat, etc.
No comments:
Post a Comment