What is meant by the term osmoregulation?
Osmoregulation is a homeostatic mechanism that regulates the optimum concentration of water and salts in the tissues and body fluids. It maintains the internal environment of the body by water and ionic concentration.
Define a taxon. Give some examples of taxa at different hierarchical levels.
What are the steps involved in formation of a root nodule?
How are viroids different from viruses?
Mention the ploidy of the following:
protonemal cell of a moss;
primary endosperm nucleus in dicot,
leaf cell of a moss;
prothallus cell of a fern;
gemma cell in Marchantia;
meristem cell of monocot,
ovum of a liverwort, and
zygote of a fern.