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
A study of broken rock Break open several rock specimens. Compare the appearance of freshly broken surfaces with the Heather-worn outside of the rock. The rocks may be safely b

What is the Definition of Ecology explain? Scientists use the term ecology to refer to the study of the relationships between organisms, and the relationships between organism

Explain Procedure for Temporary Mounts of Fungal Culture? (1) Observe mould culture for the colonial appearance and colour. Also observe the underside. (2) Label the clean,

nutrition in euglena

Explain mixture in basic chemistry? Mixtures :  Mixtures are produced by combining two or more substances. In contrast to the substances in compounds, the substances that com

Explain Operational Taxonomic Units - Numerical Taxonomy 1) Then the characters to be used for studying the OTUs are selected. Usually a large number of characters are taken as

Define Recommended Dietary Allowance for pyridoxine (RDA)? Average requirements for pyridoxine vary with age, sex and physiological conditions such as protein status, pregnan

Water loss during excretion In terrestrial animals body water is also lost during excretion of nitrogenous wastes. A number of physiological adaptations have taken place to mi

Indifferences in ionic composition Answer A. across membranes can be created through the action of ATP driven pumps as long as number of negative and positive ions on remain equal

Explain Ventricular Septal Defect in details ? Indications of surgery :  Some VSDs close spontaneously or become smaller in size. This has to be taken into consideratio