human body ppt

The cushions of moss that grow on my garage roof are a rich source of microscopic wildlife, including these little tardigrades, also known as ‘water bears’ or ‘moss pigs’. These are up to a fifth of a millimetre long, with eight legs that end in claws that allow them to clamber amongst the leaves of mosses. Tardigrades feed on mosses in the same way that greenfly feed on larger plants, by spearing the plant with a hypodermic syringe-like stylet and draining out the sap - you can see the green cell contents inside the gut of one of the tardigrades in these pictures. The most amazing thing about tardigrades is that they are virtually indestructible. When their habitat begins to dry out they develop into a barrel-shaped resting cyst call a ‘tun’, and in this state can survive in a state of extreme dehydration for decades. While in the tun stage they can survive extreme environmental conditions – even extreme vacuum and cosmic radiation in space – see http://tardigradesinspace.blogspot.com...

A cell is a unit of structure and function in living organisms. In multicellular organisms there is a division of labor among cells. Different cells are specialized for different functions. The function of the organism as a whole is the result of the sum of activities and interactions of different cells and of different components of the cell. In animals e.g. muscle cells, contract and relax, nerve cells transmit impulses, gland cells secrete, red blood cells carry oxygen and some stomach cells secrete gastric juice. Similarly in plants xylem cells conduct water and mineral salts from soil to the aerial parts of the plant. Phloem cells translocate food, sclerenchymatous cells give support to the plants, chlorenchymatous cells carry out photosynthesis, parenchymatous cells store surplus food and Meristematic cells produce new cells for growth and development of the plant. As they perform different functions they show great variation in shape and size. Despite the structural and function...

Even today, with all the debates going on about right and wrong food, nobody doubts the good effects of soups in our body. Hot soup in particular has numerous health benefits. Soup is made by boiling ingredients in water or broth until the ingredients become tender and the flavor is extracted. Drinking this liquid, the body can then absorb and assimilate these nutrients quickly without having to digest and break down the meat and vegetables. It is an ideal way to obtain loads of nutrients minus the calories! Soup is made by boiling ingredients in water or broth until the ingredients become tender and the flavor is extracted. Drinking this liquid, the body can then absorb and assimilate these nutrients quickly without having to digest and break down the meat and vegetables. It is an ideal way to obtain loads of nutrients minus the calories! Soups have many health benefits like: # They are the most nutritive method of consuming vegetables because the vitamins and nutrients in the soup ar...

Venus is the second planet from the sun in our solar system. Here are some important, scientific and interesting facts about this planet. 1.) The planet was named for Venus, the Roman goddess of beauty – the equivalent of the Greek’s Aphrodite. 2.) Although Venus is second only in distance from the Sun, it is the hottest planet in the solar system 3.) Venus is the brightest object in the sky except for the Sun and the Moon. 4.) Venus is unique because it also lacks a magnetic field and a moon. 5.) The hellish surface of Venus has broiling temperatures that make rocks glow red. obertLOCALS~1Tempmsohtml1