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Respiration in Animals Introduction
Introduction - All living creatures need food. The food is consumed so that energy is obtained. The energy is utilised by the body for various purposes like locomotion, conduction of impulses, repair of damaged tissues, building of cell materials, etc. The substance that is used to release energy i..
Ingestion in Microphagous Animals
This takes place in aquatic microorganisms such as bacteria, protozoans, diatoms, etc. Microphagous animals are sponges, corals, tadpoles, larvae of mosquitoes, etc. These animals have specialized structures for steering the water currents such as pseudopodia, cilia, flagella, ..
This takes place in aquatic microorganisms such as bacteria, protozoans, diatoms, etc. Microphagous animals are sponges, corals, tadpoles, larvae of mosquitoes, etc. These animals have specialized structures for steering the water currents such as pseudopodia, cilia, flagella, ..Circulation in Animals Introduction
Introduction - Materials formed in one part of the body have to be taken up to other parts where they are needed or to be got rid of. This is an essential requirement of most animals. This function is performed by the body fluids. The movement of the body fluids i.e. blood and l..
Animal Morphology Introduction
. From an acellular level of organisation to cellular level and then tissue level, organ level and organ system level of organization can be recognised. In addition, one can recognise the gradual appearance of distinct features such as symmetry, body wall and body cavity. There are further improvem..
Amorphous form
Coal, coke, charcoal (or wood charcoal), animal charcoal (or bone black), lamp black, carbon black, gas carbon and petroleum coke are amorphous forms..
The main differences between a typical animal cell and a typical plant cell are summarized below:
Animal Cell Plant Cell Usually smaller in size. Usually larger in size. Cell wall absent. Cellulose in any form is absent. Cell wall made up of cellulose is present. Cytoplasm is denser, more granular and occupies most of the space in the cell. Cytoplasm is pu..
Nitrogen Cycle
Nitrogen is an essential constituent of animal and plant matter as it forms proteins, which are the building blocks of life. The ultimate source of nitrogen is atmospheric nitrogen but neither plants nor animals are capable of assimilating free nitrogen..
Actinomycetes
These are a group of filamentous bacteria having a plant body resembling the fungal mycelia. They grow in the form of radiating colonies. They grow abundantly in water and soil rich in decaying organic matter. They are gram positive bacteria which constitute a major component of..
Nitrogen Cycle
Nitrogen is an essential constituent of animal and plant matter as it forms proteins, which are the building blocks of life. The ultimate source of nitrogen is atmospheric nitrogen but neither plants nor animals are capable of assimilating free nitrogen. Thus..
Nitrogen is an essential constituent of animal and plant matter as it forms proteins, which are the building blocks of life. The ultimate source of nitrogen is atmospheric nitrogen but neither plants nor animals are capable of assimilating free nitrogen. Thus..Merits and Demerits of Two Kingdom Classification
The two-kingdom classification received considerable recognition from biologists and was in use for quite a long period of time. However, as more and more information started emerging on the various groups of plants and animals, this system of classification was found to be inadequate. St..
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