a haploid gametophyte stage and a diploid sporophyte stage..
photosynthesis
Plants and most muticellular protists
they complete their lifecycle in a year or less
The cells of a fern plant that you see are diploid. Ferns have a lifecycle which alternates between a diploid sporophyte generation and a haploid gametophyte generation. The visible fern plant is the diploid sporophyte generation.
Plato: True
Alternates between 0 and 1
if your using Plato then the answer is D. the movement of sperm between plants.
alternates
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A convection volcano.
adolescent / puberty
spore producing plant generation. The dominant generation in pteridophytes and higher plants and alternates with the gametophyte generation.