Difference between hypogynous and epigynous flower is mainly due to the following factors, namely the position of an ovary and attachment of perianth and androecium. Position of the ovary: An ovary is a flower’s female reproductive structure that constitutes Gynoecium along with stigma and style. A hypogynous flower consists of a superior ovary, whereas epigynous flower …
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Corolla in plants is a second whorl that completes the perianth together with the layer of the calyx. It generally comprises several petals whose primary function is similar to the role of calyx that is to protect the flower reproductive structures. Corolla is also a sterile part of the flower. It can be tubular, funnel-shaped, wheel-shaped …
Calyx in plants merely refers as an outermost whorl that is sterile or non-reproductive structure constituting perianth. Group of sepals unitedly refer as the calyx. Thus, sepals are nothing but the modified leaves that account for the formation of the flower’s outermost whorl. It can be regular or irregular in size and shape, and the …
Phytochrome in plants is a soluble protein pigment that carry out photomorphogenic growth. It is present almost in all eukaryotic plants and was first discovered by a scientist named Sterling Hendricks and Herry Borthwick in the year 1940-1960. A term phytochrome was also given by Warren Butler. In the year 1983, Peter and Clark were …
Photoperiodism can merely define as the potential of the plant to incite flowering relative to the changes in the photoperiod. Thus, photoperiod is a light duration or the length of day and night, while the photoperiodism is the effect of light duration in the growth of a plant. Depending upon the photoperiodic effect on flowering, the …
Vernalization defines as a process of growing flowers and fruits through a phase of cold treatment. It reduces the time period of the juvenile vegetative growth phase in the plants. The active meristematic cells of the shoot apex, root apex, embryo tips etc. participate in the production of stimulus refers as “Vernalin”. The term vernalization …
Collenchyma tissue is a term given by a scientist named Schleiden in the year 1839. It is a kind of simple permanent supportive tissue that confers mechanical strength to the plant. The collenchyma cells appear as elongated cells with the non-uniform thickened cell wall. It originates by the modification of parenchyma tissue into the cells comprising …
Difference between ATP and ADP is mainly due to the given three factors like their energy state, a number of phosphate groups and the hydrolysis process. Energy state: ATP is comparatively high energy molecule than ADP. Phosphate group: There are three phosphate group in ATP, while two in ADP. Hydrolysis: As a result of hydrolysis, …
Membrane proteins are the binding proteins that mediate conduction of ions or molecules into and out of the cell membrane. It has three major kinds, namely integral, peripheral and lipid-anchored membrane proteins. The membrane protein is the principal constituent of the cell membrane that contributes to the structure of the plasma membrane. The attachment of …
Difference between the cell wall and the cell membrane is primarily due to the differences in three factors like composition, function and permeability. Composition: The composition of cell wall mainly comprises of proteins and carbohydrates, whereas a cell or plasma membrane comprises of lipids, proteins and some amount of carbohydrate. Function: The functional role of …