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  4. Sometimes, the fern plant arises from fern prothallus without fertilisation. This is an example of

Q. Sometimes, the fern plant arises from fern prothallus without fertilisation. This is an example of

 1715  202 BVP MedicalBVP Medical 2010 Report Error

Solution:

When a fem plant arise from any cell of prothallus, it is called apogamy, ie, development of sporophyte from gametophyte without fertilisation. Apogamy was first time reported by Farlow (1874). Apospory is the development of gametophyte directly from sporophytic tissue, such gametophytes have diploid number of chromosomes. Parthenocarpy is the development of fruits without fertilisation. Gametogenesis is the process of formation of gametes (male and female).