Explain the term ferns, Biology

Assignment Help:

Explain the term Ferns?

Ferns are plants that have vessels that conduct water, minerals, and nutrients, and reproduce through spores, rather than seeds. Ferns are therefore often referred to as seedless vascular plants. Ferns range in size from very tiny aquatic plants (less than a centimeter) to tree ferns that tower to 25 feet in height.

Many of the familiar ferns have horizontal stems called rhizomes that crawl along the ground and are anchored by roots. These produce upright leaves that are called fronds. The undersides of these fronds bear spore-producing organs called sporangia. Clusters of sporangia are known as sori, and occur in different shapes and sizes.

The 1N spores are produced by meiosis and following dispersal, germinate and grow into tiny 1N gametophytes that are green and heart-shaped. These gametophytes develop archegonia, which produce eggs, and antheridia, which produce sperm. Following fertilization, the 2N zygote develops into the large familiar sporophyte with rhizomes and fronds.

 


Related Discussions:- Explain the term ferns

What are the types of muscle tissues, What are the types of muscle tissues?...

What are the types of muscle tissues? What are the morphological features that differentiate those types? There are three kinds of muscle tissue: the skeletal striated muscle t

Explain entecavir, Explain Entecavir  Entecavir  (Baraclude) taken ora...

Explain Entecavir  Entecavir  (Baraclude) taken orally once a day as monotherapy appears to be superior to lamivudine for patients with chronic HBV infection, but susceptibili

Molecular diagnostic, molecular test protocol for infectious disease and fu...

molecular test protocol for infectious disease and full test procedure and scientific flyer

Energy, what are the types of pyramids studied

what are the types of pyramids studied

Role of cell death, Role of cell death As development of the limb proc...

Role of cell death As development of the limb proceeds waves of death or necrosis of large masses of mesodermal cells occur in certain regions at different stages. This has be

Precautions used during a fever in a human, During a fever in a human  ...

During a fever in a human   A.  shivering may occur when the actual body temperature is lower than the set point for body temperature during the fever.   B.  there is an inc

Solid waste management, All Solid Semi-Solid Wastes Arising From Human And ...

All Solid Semi-Solid Wastes Arising From Human And Animals Activities, Except Human Excreta And Sullage (Liquid Wastes From Bathrooms, Kitchens Etc.) are discarded as useless or un

Explain about pre - diabetes, Q. Explain about Pre - Diabetes? Pre - Di...

Q. Explain about Pre - Diabetes? Pre - Diabetes is a condition where blood sugar level is above normal but below to be diagnosed as diabetes mellitus. It has been found that

Define terpene alcohols - non glyceride fractions, Define Terpene Alcohols ...

Define Terpene Alcohols - non glyceride fractions? Partly free, partly esterified e.g. ferulic acid; these are found in significant amounts in rice bran oil, wheal germ oil, so

Gametes and genotypes, what type of gametes would be produced from genotype...

what type of gametes would be produced from genotype AA, Bb, AABb and someone who is heterozygous for 3 traits

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd