Reproduction in fern

1. Reproduction In Ferns

2. FERNSFERNS

3. DIFFERENT
EXAMPLES
OF FERNS

4. Common Name:
Black-Stick Maiden Hair
Scientific Name:
Adiantum tenerum

5. Common Name:
Staghorn Fern
Scientific Name:
Platycerium
coronarium

6. Common Name:
Bird’s Nest Fern
Scientific Name:
Asplenium nidus

7. Common Name:
Tree Fern
Scientific Name:
Cyathea spp.

8. Common Name:
Fishtail Fern
Scientific Name:
Nephrolepis falcate
forma“Furcans”

9. REPRODUCTION
IN
FERNS
Presented By :
Cristina Joy F. Reyes

10. FERNS S. N - “ Pteridophyta “

11. What are Ferns???

12.  Ferns are seedless, vascular plants.
Two types of vascular tissue
1. Xylem is responsible for moving water and
nutrients throughout the plant.
2. Phloem is responsible for moving glucose
throughout the plant.
 Ferns reproduce by an alternation of generations.

13.  They have stems and leaves, like other vascular
plants.
 Most ferns have what are called fiddleheads that
expand into fronds, which are each delicately
divided.
 Ferns are typically found in moist, forested areas.
 The leaves of ferns are called fronds and when they
are young they are tightly coiled into a tight spiral.
 Ferns can be categorized based on their growth
form such as tufted, creeping, climbing, perching
and tree ferns.

14. Words To Remember

15. Alternation of Generation

16. Sorus
It is the cluster of sporangia.

17. It is an enclosure in
which spores are formed.
Sporangium/Sporangia

18. Gametophyte (Prothallus)
It is the haploid,
multicellular phase of
plants and algae that
undergo
alternation of
generations, with each
of its cells containing
only a single set of
chromosomes.

19. Sporophyte
It is the diploid form of
plants that have
alternation of
generations. It
develops from a zygote
and produces asexual
spores.

20. Antheridium
It is a haploid structure or organ
producing and containing
male gametes called sperm.

21. Archegonium
It is a multicellular
structure or organ
of the
gametophyte
phase of
certain plants,
producing and
containing the
ovum or female
gamete.

23. Adult
Sporophyte
.
.
.
.
1) Sporophyte creates and releases haploid spores
ground

24. ground
2) Haploid spores land in the soil

25. ground
3) From the haploid spores, gametophyte grows in the soil
Let’s zoom in
Fern gametophytes
are called a prothallus

26. 4) Sperm swim through water from the male parts (antheridium) to the female parts
(archegonia)…zygote created
Let’s zoom back out
eggegg
egg
zyg
ote
zyg
ote
zyg
ote

27. ground
5) Diploid sporophyte grows from the zygote
sporophyte
Fern gametophytes
are called a prothallus

28. 6) Fiddle head uncurls….fronds open up
ground
7) Cycle repeats
-- Haploid spores created and released
.
.
.
.
fiddleheadfrond

29. ground
2) Haploid spores land in the soil

30. ground
3) From the haploid spores, gametophyte (called the prothallus) grows in the soil
Let’s zoom in

31. 4) Sperm swim through water from the male antheridium to the female archegonia
Let’s zoom back out
eggegg
egg
zyg
ote
zyg
ote
zyg
ote

32. ground
5) Diploid sporophyte grows from the zygote
sporophyte
fiddlehead

33. 6) Fiddlehead uncurls….fronds open up.
ground
7) Cycle repeats
.
.
.
.

34. Did You Know?
Ferns are very ancient
group of plants. They are
supposed to be older than
land animals and even
dinosaurs. They were actually
growing on Earth for 2
hundred million years.

35. Summary
- Ferns are seedless, vascular plants.
- They have stems and leaves, like other vascular plants.
- Most ferns have what are called fiddleheads that expand into
fronds, which are each delicately divided.
- Ferns are typically found in moist, forested areas.
- The leaves of ferns are called fronds and when they are
young they are tightly coiled into a tight spiral.
Ferns Reproduction
1. Most ferns are homosporous , meaning that they produce a
single type of spore.
2. The ferns spore develops into a small, heart – shaped
gametophyte that sustain itself by photosynthesis.

36. 3. Each gametophyte has both male and female sex organs
but the archegonia and antheridia usually mature at different
times , ensuring cross – fertilization between gametophytes
4. Fern sperm like those of all seedless vascular plants use
flagella to swim through moisture from antheridia to eggs in the
archegonia and then fertilize the eggs.
5. A fertilized egg develops into a new sporophyte , and the
young plant grows out from an archegonium of its parent, the
gametophyte
6. The spots on the underside of reproductive leaves
(sporophylls) are called sori
7. Sporangia release spores, which give rise to gametophytes.

38. ANY QUESTIONS , CLARIFICATIONS
COMMENTS ??????????

40. References:
http://w2science.swiiit.com/cos/o.x?
c=/wbn/pagetree&func=view&rid=55914
http://eresources.nlb.gov.sg/infopedia/articles/SIP_389_2005-
01-28.html
http://en.wikipedia.org/wiki/Platycerium_coronarium
http://en.wikipedia.org/wiki/Fern
http://www.slideshare.net/alyssadenise/life-cycle-of-fern
https://smartsite.ucdavis.edu/access/content/user/00002950/
bis10v/media/ch15/fern_life_cycle_v2.html
Infoplease.com http://www.infoplease.com/dk/science/encyclo
pedia/seedless-plants.html#ixzz39Lb7WxTa
http://www.infoplease.com/encyclopedia/science/fern-
reproduction.html#ixzz39LYtHu00