vascular plants-gymnosperms

Gymnosperms - The gymnosperms are seed producing land plants. However, the seeds are not enclosed in fruits. Most of them have now become extinct and only about 900 species are known to be surviving. The living gymnosperms are widely distributed in the cold c..

The gymnosperms are seed producing land plants. However, the seeds are not enclosed in fruits. Most of them have now become extinct and only about 900 species are known to be surviving. The living gymnosperms are widely distributed in the cold climates where snow..

Tracheophytes include the true land plants or vascular plants. The adult plant body is a sporophyte and shows definite root, stem and leaves. Vascular tissues xylem and phloem are present for the translocation of water and food respectively. Gametop..

They are found irregularly scattered in the ground tissue. Towards the periphery, the bundles are smaller in size while towards the centre, they are larger in size. The smaller bundles are younger, while the larger ones are older. Hence, the arrangement is described as centrifugal. Each vascu..

Transport in Plants - As mentioned earlier, the transport in higher plants is with the help of the vascular system. Thus, these plants are also called the vascular plants..

As mentioned earlier, the transport in higher plants is with the help of the vascular system. Thus, these plants are also called the vascular plants..

A section taken through any region of a typical plant body shows the presence of three tissue systems, namely Epidermal tissue system Ground tissue system and Vascular tissue syst..

Growth in plants occurs by cell division and cell enlargement, followed by cell differentiation. Growth in plants is generally limited to regions of growing points known as meristems . The two important growing points present in the root apex and stem apex are called apical meri..

Summary - An angiosperm plant body is composed of two basic types of tissues namely meristematic and permanent tissues. Meristematic tissue is formed by undifferentiated, embryonic cells called meristematic cells. Meristematic cells are compactly arranged. They have thin cell wall abundan..

The plant body is not differentiated into stem, root and leaves but is in the form of an undivided thallus. Vascular tissues are absent. The reproductive organs are single-celled and there is no embryo formation after fertilization. This division includes three sub-divi..