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

Determine the list of sensory organs, Determine the list of Sensory Organs ...

Determine the list of Sensory Organs There are four special sensory organs in our body. They are: 1) Eyes 2) Ears 3) Nose and 4) Skin

Chronic aortic regurgitation-types of regurgitation, Chronic Aortic Regurgi...

Chronic Aortic Regurgitation :  The aetiological factors leading to aortic regurgitation are: (1) rheumatic, (2) annulo aortic ectasia, (3) native valve endocarditis, (4) c

Agro industrial-enrichment of soil, Enrichment of soil Indirect provis...

Enrichment of soil Indirect provision of minerals to grazing livestock includes mineral fertilization of  pasture and altering soil pH, however this may not be always feasible

How can a child become infected with gonorrhoea, How can a baby become infe...

How can a baby become infected with (a) gonorrhoea, (b) syphilis   (a)  During birth, a baby might be become infected with gonorrhoea bacteria as it passes by t

Explain lamivudine, Explain Lamivudine It is probably the best tolerat...

Explain Lamivudine It is probably the best tolerated of the NRTIs and can be taken once or twice daily. An increase in viral load during treatment with a lamivudine-containing

Morphology of angiosperms, define inflorescence and explain in detail about...

define inflorescence and explain in detail about it''s types

How are solutions classified, Q. How are solutions classified as per to the...

Q. How are solutions classified as per to their comparative tonicity? Comparative to another, a solution can be isotonic or isosmotic, hypotonic or hyposmotic or hypertonic or

Life as an expression of energy changes, LIF E AS AN EXPRESSION OF ENERGY ...

LIF E AS AN EXPRESSION OF ENERGY CHANGES - Energy is explained as capacity of body to do work. Energy may be as potential (stored) or kinetic (expended) energy. It ex

Prototheria, prototherians are unfinished mammals

prototherians are unfinished mammals

Explain the analysis of food samples, Explain the Analysis of Food Samples?...

Explain the Analysis of Food Samples? Now, in this practical, we shall deal with the endogenous and exogeneous microorganisms which are present on the food as contaminants. We

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