POND ECOSYSTEM

Pond  ecosystem is the typical example of the aquatic ecosystem. It is seen that where ever there is pond there is the pond ecosystem existing.
What is ecosystem?
Ecosystem is the ecological system which is formed by the interaction between the living organisms and nonliving components of the particular area and formation of the stable type of system in that particular area. There are different types of ecosystems like the aquatic ecosystem, terrestrial ecosystem etc. aquatic ecosystem is further classified as the pond ecosystem, lake ecosystem, river ecosystem, ecosystem of the aquarium etc. Anyway the pond ecosystem is the ecosystem which is formed in a pond by the living organisms of the pond and the non-living components of the pond like light, heat, temperature, soil water etc. The living organisms of the pond are also known as the biotic factors which are the plants and animals of the pond. Plants are green in color and known as producers. Animals are known as consumers.There are small and microscopic organisms in the pond which are bacteria, viruses and fungi. They are known as decomposers.

PTERODACTYLE

What is pterodactyle? It is also known as flying fox. It is more or less like the fox in appearance but it is unlike the fox because a fox can no more fly but what it amazing with the Pterodactyle is that it is the flying mammal which can fly but not with its true wing but with its patagia or wing like structures. Pterodactyles are the fruit -eating bats. They are seen hanging over the branches of the trees with head in downward position. Due to their capacity to fly in the air although the flight is of not so long distance, they are known as flying fox. They show the general characters of mammals like hair covered body, a pair of pinnae for collecting sound waves, pentadactyle limbs, four-chambered heart, viviparity i.e. giving birth to young ones and warmbloodedness. There are two different types of bats, one type are the insectivorous bats which are of small size in comparison to the pterodactyle. But the large sized bats are frugivorous in nature.

Rabbit

Rabbit is the common representative animal which belongs to the phylum chordata, class mammalia and order lagomorpha. This is the graceful animal in the animal kingdom. It is herbivorous in food habit.

Structure: Body of rabbit can be divided into four  different parts. They are anterior head, neck trunk and the tail.Head is the anteriormost region of the body. It is a little bit conical in shape and consists of snout, a pair of nostrils,a pair of eyes and at the top of the head there are two enlarged external ears called pinnae. They collect the sound waves from the environment and pass the sound waves towards the middle ear and then to the internal ear. Inside the mouth there are teeth and tongue. Teeth are adapted to eat the vegetable food materials. Rabbit is totally herbivorous in food habit. So, it has no canine teeth for tearing the flesh materials.Neck is the second part of the body which lies just after head region. Then comes the trunk region in the ventral side of the trunk are found the mammary glands which produce milk for suckling the young ones. There are two pairs of limbs which arise from the trunk, one pair of forelimbs and the second pair of hind limbs. There is the single small bushy tail.