Ferns and horsetails have two free-living generations: a
diploid
sporophyte generation (spore-producing plant) and. a haploid gametophyte generation (gamete-producing plant).
Are fern spores diploid?
Ferns and horsetails have two free-living generations: a
diploid sporophyte generation
(spore-producing plant) and. a haploid gametophyte generation (gamete-producing plant).
Is fern haploid or diploid?
Ferns and horsetails have two free-living generations: a diploid sporophyte generation (spore-producing plant) and. a
haploid
gametophyte generation (gamete-producing plant).
Are spores haploid or diploid?
In plants, spores are
usually haploid and unicellular
and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes.
Are ferns haploid or diploid dominant?
Early vascular plants, including ferns (A), clubmosses (B), horsetails, (C,D, and E) have a
dominant diploid sporophyte
stage, in which sporangia (A-D) produce haploid spores (E) by meiosis.
Does fern have a life cycle?
The life cycle of the fern has two different stages;
sporophyte, which releases spores, and gametophyte, which releases gametes
. … This type of life cycle is called alternation of generations.
Where do ferns grow best?
Woodland ferns do best in
high or dappled shade
. The open shade of mature trees or the north side of the house or a wall, open to the sky, provide nearly ideal light conditions. Most woodland ferns will adapt to relatively low light levels, but no ferns thrive in deep shade.
What are examples of spores?
An example of a spore is
a flower seed
. A small, usually single-celled reproductive body that is resistant to adverse environmental conditions and is capable of growing into a new organism, produced especially by certain fungi, algae, protozoans, and nonseedbearing plants such as mosses and ferns.
What are the types of spores?
- Plants.
- Algae.
- Protozoa.
- Bacteria.
- Fungi.
Which bacteria are spore forming?
Spore-forming bacteria include
Bacillus (aerobic) and Clostridium (anaerobic) species
. The spores of these species are dormant bodies that carry all the genetic material as is found in the vegetative form, but do not have an active metabolism.
Are Sporophytes haploid?
In terms of chromosomes, the
gametophyte is haploid
(has a single set of chromosomes), and the sporophyte is diploid (has a double set). In bryophytes, such as mosses and liverworts, the gametophyte is the dominant life phase, whereas in angiosperms and gymnosperms the sporophyte is dominant.
Do ferns produce spores?
Ferns generally reproduce by producing spores
. Similar to flowering plants, ferns have roots, stems and leaves. However, unlike flowering plants, ferns do not have flowers or seeds; instead, they usually reproduce sexually by tiny spores or sometimes can reproduce vegetatively, as exemplified by the walking fern.
What is the final stage in the fern life cycle?
While many plants grow a mature adult form straight out of the seed, ferns have an intermediate stage, called a gametophyte, which then grows into a
mature fern
.
What is the lifespan of a fern?
Lifespan of fern depends on the species. Some types of ferns can
live up to 100 years
.
Are fern spores male or female?
All seed plants and some non-seed plants are heterosporous, producing spores of different sizes:
large female spores and small male spores
. Most ferns, on the other hand, are homosporous; they produce a single type of spore.
How do you tell if a fern is male or female?
Scientists previously knew that the factor that determines which sex a specific fern will end up as is a hormone called gibberellin. If the hormone is present in large enough quantities as the plant develops,
the fern usually becomes a male
, and if it isn’t, it becomes a female.
