Living organisms are classified into five kingdoms by R.H. Whittaker. He classified living species based on cellular structure, manner of nourishment, body organization, reproduction, phylogenetic relationship, and other factors. Monera, Protista, Fungi, Plantae, and Animalia were the five kingdoms. According to the above-mentioned criteria, the plant kingdom has been divided …

All viable seeds which have overcome dormancy (if any) either naturally or artifi­cially will readily germinate under suitable environmental conditions necessary for seed germination i.e., water, O2, temperature, and in some cases light. The seeds that just wait for suitable environmental conditions to germinate are said to be ‘quiescent’. In …