study the trees (any ten) in your surrounding and write down change over on these trees like flowering, fruiting time, leaf fall, birds /insects seen or any nesting of birds etc. project 11th Environmental science commerce full answer
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. PROJECT (STUDY OF COMMON BIRDS, INSECTS AND PLANT) HERAMBA CHANDRA COLLEGE Environmental study B.COM (HONS) PART-3 Name: Raghu Roy Registration no: 043-1121-0963-15 Roll no: 154018 Supervised by: Soumita Chatterjee2. [1] i. INTRODUCTION A. BIRDS Birds are ready visitors that visit frequently from place to place even from continent to continent. A good number of birds visit different sites due to change of environment particularly for their feed and reproduction. As the site is not homogenous for their easy life period so they need movement from one place to other. A good example is Birds of migratory kind. In our West Bengal, Storks and Siberian Cranes are common even in Lake Chilka of Odisha a large number of Pelicans and Flamingos are vivid examples of that kind. They come to thrive there for a temporary period to hatch eggs and carry a good number of off springs during their back journey. B. INSECTS Insects, are a class in the phylum Arthropoda.They are small terrestrial invertebrates which have a hard exoskeleton. Insects are the largest group of animals on earth by far: about 926,400 different species have been described. They are more than half of all known living species. They may be over 90% of animal species on Earth. New species of insects are continually being found Estimates of the total number of species range from 2 million to 30 million .Insects have six legs; and most have wings. Insects were the first animals capable of flight. As they develop from eggs, insects undergo metamorphosis. Insects live all over the planet: almost all are terrestrial (live on land). Few insects live in the oceans or in very cold places, such as Antarctica. The most species live in tropical areas. C. PLANTS Plants are critical to other life on this planet because they form the basis of all food webs. Most plants are autotrophic, creating their own food using water, carbon dioxide, and light through a process called photosynthesis. Some of the earliest fossils found have been aged at 3.8 billion years. These fossil deposits show evidence of photosynthesis, so plants, or the plant-like ancestors of plants, have lived on this planet longer than most other groups of organisms