EVERYDAY SCIENCE

Detailed explanation-1: -Unlike multicellular organisms, unicellular organisms do not grow in size or volume. Growth in unicellular organisms is marked by division which produces daughter cells. Thus, asexual reproduction by amitosis shows growth in these organisms.

Detailed explanation-2: -Unicellular organisms usually just increase in size throughout their lives. There is little change in their features. Multicellular organisms typically undergo a process known as development. Development is a more complicated process than just getting bigger.

Detailed explanation-3: -Both unicellular and multicellular organisms can reproduce by budding. Budding is a process in which an organism develops tiny buds on its body.

Detailed explanation-4: -The unicellular organism grows by the mitotic division only e.g. binary fission in Amoeba. The multicellular organisms also begin their life as a single cell but they divide mitotically and form tissues then organs, organ systems. Growth is characterized by increase in number and mass.

Detailed explanation-5: -Which is true about all unicellular and multicellular organisms? They are made of one cell.