exceptional cases of plants in biology

Two German biologists M.J.Schleiden (1838) and Theodore Schwann (1839) proposed the cell theory (or cell doctrine), which unified the ideas prevailing at that period on the organisation in plants and animals. The cell theory states that All living organisms are composed of minute structur..

Biology - A Science of Exceptions - Physical, chemical and mathematical sciences follow a specific set of rules and regulations. They are governed by a set of laws such as the law of gravity, the laws of thermodynamics, the law of conservation of mass and so on. However, bi..

In case of plants, growth and development is in a coordinated manner. The higher plants do not show locomotion. However, locomotion is seen in structures like sperm cells of ferns and mosses that swim towards the egg. The other movements shown by the plantsh..

In case of plants, growth and development is in a coordinated manner. The higher plants do not show locomotion. However, locomotion is seen in structures like sperm cells of ferns and mosses that swim towards the egg. The other movements shown by the plants a..

The fluid feeders feed on fluids from plants. Examples: Butterflies and male mosquitoes. All animals are heterotrophic (there are exceptions like Euglena, which has chlorophyll and can thus manufacture its own food). The different modes of heterotrophic nutrition have already b..

It is the most abundant cation in plants. 1. Required for the metabolic activities of cells in young growing parts like root tips and young leaves but seeds are an exception. 2. Essential for the functioning of about forty enzymes which take part in glycolysis, Kreb's Cycle, pho..

Nitrogen is an important structural component of many necessary compounds, particularly proteins. Atmosphere is the reservoir of free gaseous nitrogen and nitrogen compounds are found in bodies of organisms and in the soil. Living organisms cannot pickup elemental gaseous nitrogen directly from the..

It is the carbon compounds that are the source of energy to all the organisms. In case of autotrophs, the source of carbon is inorganic. They use inorganic molecules to synthesize organic molecules. Whereas the heterotrophs derive energy from the organic substances synthesized by the ..

>The plants that are produced in the F1 generation are called hybrids as they have a mixture of traits of both the parents. Since, in this case only one trait, i.e., height was considered, this cross is called the monohybrid cros..

Artificial Vegetative Propagation or Cloning - Vegetative propagation produces the next generation that is genetically identical to the parent. Such an organism that is genetically identical to the parent is called a clone. In case of plants with advantageous characteristics, th..