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 ferm; gemma cell in Marchantia; meristem cell of monocot, ovum of a liverwort, and zygote of a fern.

Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.

Differentiate between the following:- (ii) liverworts and moss

Differentiate between the following:- (iii) homosporous and heterosporous pteridophyte

Explain briefly the following terms with suitable examples:- (ii) antheridium

Explain briefly the following terms with suitable examples:- (iii) archegonium

Explain briefly the following terms with suitable examples:- (v) sporophyll

Explain briefly the following terms with suitable examples:- (iv) diplontic

Both gymnosperms and angiosperms bear seeds, then why are they classified separately?

Write a note on economic importance of algae and gymnosperms.

Match the following (column I with column II)
Column I                         Column II
(a) Chlamydomonas          (i) Moss
(b) Cycas                          (ii) Pteridophyte
(c) Selaginella                   (iii) Algae
(d) Sphagnum                   (iv) Gymnosperm

What is heterospory? Briefly comment on its significance. Give two examples.

Describe the important characteristics of gymnosperms.

What is the basis of classification of algae?

Explain briefly the following terms with suitable examples:- (i) protonema

Explain briefly the following terms with suitable examples:- (vi) isogamy

When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?

Differentiate between the following:- (i) red algae and brown algae