Contrast the role of spores in the land plant life cycle with the role of gametes;...

Contrast the role of spores in the land plant life cycle with the role of gametes; identify the structures associated with the dispersal of spores in bryophytes.

Expert Solution

SPORES	GAMETS
spores is a unit of sexual or asexual reproduction	Gamets are the agents of sexual reproduction.
Adapted for dispersal to survive.	gamets produced and develops along with parent
spores produced in mature saprophyte	gamets are produced in a mature gametophyte
saprophyte phase is diploid and begins with fertilized egg	gametophyte phase is haploid and begins with spore
gamets produced by meiosis	gamets produced by mitosis

The production of spores or vegetative propagules is a critical step on the way to producing new plants. But those spores and propagules need to be dispersed. Many bryophyte spores are very small and easily wind-dispersed, potentially over fairly long distances. Water is another dispersal agent and one group of mosses even attracts insects to carry away the spores.

Vegetative propagules are generally too big to be wind-dispersed, except for rather short distances. Water, insects and larger animals have been found as carriers of vegetative propagules.

By and large, vegetative propagules are means of short-range dispersal and spores are means of long-range dispersal

gladiator answered 1 year ago

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