Biology Questions and Answers
Bryophytes
- What are the main
characteristics of the
bryophytes?
Bryophytes arthey do not have conductive tissuese nonvascular plants, i.e., and (^)
they perform transpnutrients by diffusion; they areort of water an d
cryptogamic, i.e., they do not present
flowers othey present water-der seeds; they are pendantsmall in size;
fecundation; in their life cycle the
lasting fgametophyte) aorm is hnd the sporophyteaploid (the (^)
depends on the gametophyte to survive.
- What are the main
bryophyte groups?
The main bmosses, the liverwryophyte groups are theorts and the
hornworts.
- How is the transport of
substances done across the
bryophyte tissues? How is this
feature related to the general
size of these plants?
In bryophytes thconducting or nutrient-condere are no water-ucting
structures and the transport of these
substancesdiffusion. T is done by cell to he small size of bryophytescell (^)
relates to this feature since if there are
no conductive vessels it is not viable to
have cells too emergence of the conductive tissues infar from each other (the (^)
tracheophytes allowed their increase in
size).
- What is the life cycle type
of bryophytes?
As in all plants the bryophytes is diplobiontic (alternation olife cycle of (^) f
generations). In bryophytes the lasting
form is the haploid one.
- In general where is the
sporophyte positioned in
relation to the gametophyte in
bryophytes? How does the
sporophyte obtain nutrients?
The bryophyte sporophyte in general isa tiny long stem that grows on the top
of the gametophyte. Tdepends totally upon the gametophytehe sporophyte (^)
to obtain nutrients.
- Why can the bryophytes be
considered the “amphibians of
the plant world”?
Like adult amphibians, the bryophytes
live in the terrestrial environment butthey depend on water to reproduce. For (^)
this reason the nickname is justified.
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