The book 'Systema Naturae' was written by

Write the names of a few thallophytes. Draw a labelled diagram of Spirogyra.

Explain the following terms:
$(a)$ Phanerogams
$(b)$ Symbiosis
$(c)$ Binomial Nomenclature

$(a)$ What is the significance of binomial nomenclature?
$(b)$ Who introduced the system of scientific naming?
$(c)$ Write any two conventions followed while writing the scientific names.

Where are seeds of gymnosperms formed?

State whether the following statement is true or false:
Seeds consist of the embryo along with stored food,which serves for the initial growth of the embryo during germination.