The sporangia
is the structure which produces spores. In ferns, the sporangia are usually aggregated into particular bigger structures.
Where are spores produced in ferns?
Mature plants produce spores
on the underside of the leaves
. When these germinate they grow into small heart-shaped plants known as prothalli. Male and female cells are produced on these plants and after fertilisation occurs the adult fern begins to develop.
Are spores in ferns produced by mitosis or meiosis?
Unlike some other non-flowering vascular plants, ferns produce one type of spore (homosporous) via
meiosis
in the sac-like sporangia. Within each sporangium, the diploid spores (spore mother cells or sporocytes) undergo meiosis.
How are spores formed in fern?
In ferns, the multicellular sporophyte is what is commonly recognized as a fern plant. On the underside of the fronds are sporangia. Within the sporangia are spore producing cells called sporogenous cells. These cells undergo
meiosis to form haploid spores
.
Which structure is produced by germination of fern spore?
Fern spore germinate to form a leafy structure called
prothallus
. On prothallus, male and female gametophyte germinate and produce respective germ cells.
What type of spores are produced in a fern plant?
In ferns, the multicellular sporophyte is what is commonly recognized as a fern plant. On the underside of the fronds are sporangia. Within the sporangia are spore producing cells called sporogenous cells. These cells undergo meiosis to form
haploid spores
.
Are fern spores male or female?
All seed plants and some non-seed plants are heterosporous
What are fern spores called?
Fern Sori
.
Sori
(singular: sorus) are groups of sporangia (singular: sporangium), which contain spores. Sori are usually found on the underside of the blade. Young sori are commonly covered by flaps of protective tissue called indusia (singular: indusium).
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 is the life cycle of ferns?
The life cycle of the fern has two different stages;
sporophyte, which releases spores, and gametophyte, which releases gametes
. Gametophyte plants are haploid, sporophyte plants diploid. This type of life cycle is called alternation of generations.
What is the mode of reproduction used in fern plant?
Most ferns reproduce
sexually
, and that involves meiosis and fertilisation. When you are thinking of the typical big fern plant, what it does is, by meiosis, produces spores, and spores have half the number of chromosomes of the big parent plant. The spores are released into the wind.
What is the structure of ferns?
The structure of a fern. Ferns have 3 major parts –
the rhizome, the fronds and the reproductive structures called sporangia
. The characteristics of each of these 3 parts of the fern plant are used for classification and identification. The rhizome is the stem of the fern plant.
What are characteristics of ferns?
- Ferns are seedless vascular plants of humid tropics and temperate areas. …
- They constitute the largest living group of primitive vascular plants with over 10,000 species. …
- Plant body is a sporophyte. …
- The stem is underground rhizome in most of the ferns. …
- Roots are adventitious.
What are the types of spores?
- Plants.
- Algae.
- Protozoa.
- Bacteria.
- Fungi.
What is called Sporophyll?
A sporophyll is
a leaf that bears sporangia
. Both microphylls and megaphylls can be sporophylls. … Cycads produce strobili, both pollen-producing and seed-producing, that are composed of sporophylls.
What are examples of spores?
Ferns, mosses, liverworts and green algae
are all plants that have spores. Spore plants have a different life cycle. A parent plant sends out tiny spores containing special sets of chromosomes. These spores do not contain an embryo or food stores.
