Question

The first cells of sporophytic and gametophytic generation in plants are

• A. Zygote and spore respectively
• B. Spore and zygote respectively
• C. Zygote and spore mother cell respectively
• D. Sperm and egg respectively

Answer 1

The correct option is A

Zygote and spore respectively

In plants, the haploid spores germinate and grow into a haploid gametophyte. At maturity, the gametophyte produces gametes by mitosis, which does not alter the number of chromosomes. Two gametes (originating from different organisms of the same species or from the same organism) fuse to produce a zygote, which develops into a diploid sporophyte. This cycle, from gametophyte to gametophyte (or equally from sporophyte to sporophyte), is the way in which all land plants and many algae undergo sexual reproduction.