pteridophytes internal structure

Pteridophytes - The division Pteridophyta includes a group of primitive vascular plants, commonly called pteridophytes. The adult plant body in these plants is a sporophyte. It shows differentiation into true roots, stem and leaves. The stem is mostly herbaceous . Leaves may be ..

A longitudinal section of the kidney shows three distinct regions: Renal Cortex Renal Medulla Renal Pelvis A longitudinal section of the kidney showing three distinct regi..

The human heart is a muscular, cone-shaped, hollow organ about the size of a fist (about 12cm in length and 9cm in breadth). The heart is situated behind the sternum, between the lungs in the thoracic cavity. The heart is tilted slightly such that its apex is towards the left side. The major p..

Variations in leaf structure to reduce transpiratio..

Anatomy - Anatomy which favours the amount of CO 2 diffusion into collenchyma cells the intensity dilution of light and the rate of photosynthesis. Thickness of epidermis, size structure, position and frequency of stomata, distribution of vascular tissue and intercellular spaces, position..

Structure of the Leaf - Variations in leaf structure to reduce transpiration: Xerophytic plants have small leaves thick cuticle sunken stomata covering of epidermal hairs well developed palisade parenchyma to reduce transpiration increased wax deposits on leaves conifers like pi..

In outward appearance, the earth is a nearly spherical ball with a radius of 6350 kilometers. Internally, the earth consists of three major layer..

In outward appearance, the earth is a nearly spherical ball with a radius of 6350 kilometers. Internally, the earth consists of three major layers. They are: Crust Mantle Co..

There appear to be many structures that are similar because of the function they carry out and in their external appearance. However, these structures differ internally. Such structures are called analogous structures. For example, wings of bat and..

A tooth consists of two main parts: crown root Know Something A total of 32 teeth are present in the normal human adult. Dentition can also be represented by dental formula which gives the number of teeth in one half of a ..