Apical dominance, Biology

Apical Dominance

Apical dominance is a correlative phenomenon in the developmental biology of plants. Branching of the main shoot into lateral branches is one of the main characteristics of the growth of most of the plants. More branches mean more leaves and more of photosynthesis. Branching also helps a tree to avoid crowding of leaves. Branches provide an opportunity for exposure of maximum number of leaves to sunlight. Branching has a distinct evolutionary advantage, as it helps a plant to survive in a variety of habitats.

A plant that does not branch finds it difficult to survive in crowded forests or in areas where the light intensity is low. If you go around your place of stay or your place of work and start observing the big trees (flowering plants), you will come across two different types of tree growth. One, "monopodial" where the main bunk grows tall-bearing a crown of leaves at the top without much of lateral branches such as the large majority of palms and the other- "sympodial" where lateral branches start spreading out leaving a gap from the apex. Plants which exhibit the second type of growth pattern are quite useful as they provide lot of shade from hot sunlight apart from providing economic benefits like timber and fruits. Plants with a monopodial growth habit find it difficult to survive in temperate forests where light availability is poor. Palms mostly grow in tropical regions. Interestingly, bamboos have underground stems (rhizomes) like grasses which show both monopodial and sympodial branching pattern.

Posted Date: 1/24/2013 3:03:51 AM | Location : United States

Related Discussions:- Apical dominance, Assignment Help, Ask Question on Apical dominance, Get Answer, Expert's Help, Apical dominance Discussions

Write discussion on Apical dominance
Your posts are moderated
Related Questions
Q. What are sensory receptors? Sensory receptors are structures specialized in the acquiring of information, mechanical pressure, like temperature, pH, luminosity and chemical

Define some Precautions for Estimation of the Amount of Bacteria? 1. Dilution should be made carefully. 2. Use fresh sterile pipette for making each dilution. 3. Aseptic

Self Help Group: The first and perhaps the most influential of substance abuse rehabilitation is Self Help Group. The self help programme was founded in 1935 by two men, Dr. B

What is the type of genetic inheritance of daltonism? Is daltonism more frequent in men or in women? What is the physiological explanation for the daltonism? Daltonism is a re

types of excretory system of lower animals

Exceptions to the Cell Theory Viruses, however, are not the only exception to the Cell Theory as formulated earlier. This has led scientists to take a much broader view of the

Q. Write the meaning of Metabolism? Metabolism is the set of chemical reactions that occur in living organisms in order to maintain life. These processes allow organisms to gro

Q. High Para-sternal or Ductal View? This view is obtained by sliding transducer one or two spaces upward and medially from PLAX view. This view is specifically used to vi

S y s te m i c Diseases Diseases of the gastrointestinal tract The diseases of gastrointestinal system are manifested by abnormality in prehension, mastication and s

Placing the Implants in Immature Grafted Sites One of the most common causes of prosthetically related implant failure is believed to be the too rapid loading of the implant su