Describe the phylogenetic system of classification, Biology

Q. Describe the phylogenetic system of classification?

1) Hutchinson believed in Monophyletic origin of Angiosperms from a hypothetical group, which he' named, as Proangiosperms,

2) He tracedu2 main lines development of Dicots viz.

i) Lignosae (woody)

ii) Herbaceae (herbaceous)

3) Lignosae has 54 Orders and 251 Families. The starting order is Magnoliales with Magnoliaceae as the starting family passing through Annonales-Rosales-Malvales Rubiales and terminating at Verbenales with Phrymaceae as the terminating family.

4) Herbaceae has 28 Orders and 100 Families, The starting order is Ranales with Paeoniaceae as the starting family passing through rhoedales-Caryophyllales- Umbellales-Asterales and terminating at Lamiales with Lamiaceae (Labiatae  as the ending family,

5) The haonocots have 29 Orders and 69 Families.

As a whole, Monocots have been subdivided into 3 distinct groups based on the nature of Perianth viz.

i) Calyciferae

ii) Corolliferae

iii) Glumiflorae

The starting order of Calyciferae is Butomales with Butomaceae as the starting family. The climax (ending) order is Zingiberales with Marantaceae as the ending . family.

The starting order of Corolliferae is Liliales with Liliaceae as the starting family. The terminating order of   this group is Orchidales with Orchidaceae as the ending family.

In the case of Glumiflorae the starting order is Juncales and Juncaceae as starting family. The climax order is Graminales and Gramineae (Poacea) as the last or terminating family.

Posted Date: 6/6/2013 1:58:03 AM | Location : United States







Related Discussions:- Describe the phylogenetic system of classification, Assignment Help, Ask Question on Describe the phylogenetic system of classification, Get Answer, Expert's Help, Describe the phylogenetic system of classification Discussions

Write discussion on Describe the phylogenetic system of classification
Your posts are moderated
Related Questions
Q. What are the positions of myosin and actin molecules in the sarcomere before and during the muscle contraction? Schematically actin filaments attached perpendicularly to bot

Determine by nutritive muscular cell? The cells which form the gastrodermis lining the inner cavity of cnidarians. They carry out two functions: First is to absorb and digest f


Explain Control of Oedema in Nutritional Care? Low levels of circulating proteins lead to oedema due to loss of colloidal osmotic pressure to maintain the normal fluid shift me

Q. Modern infection control recommendations? Concern about transmission of disease has been expressed for thousand of years. Written guidelines for "disease control" are found

In the ecological study of food interactions, what are the autotrophic beings called? In the Ecology autotrophic beings are called as producers because they synthesize the orga

Define Interactions between Volatile Substances and Proteins? Flavour binding may involve adsorption at the surface of food or penetration to the food interiority by diffusion

General characters of mollusca

T ertiary Structure (3 o S tructure) Highly folded protein. Globular in structure. Tertiary structure is stabilised by five types of bonds : (i )      P

Explain the Digestion of carbohydrates? You are aware that 60-70% of energy is supplied by the dietary carbohydrates which are primarily present as polysaccharides (starch) fol