complete the paragraph by choosing the words given in the bracket :
(apex, biotic, Carnivores, Herbivores, proteins, carbon dioxide)
Plants convert ......... into carbohydrates by the process of photosynthesis. Similarly, they produce carbon compounds like ...... and fats, too. ......... feed upon plants. ......... feed upon herbivores. In this way, ......... carbon is transported from plants to herbivores, from herbivores to carnivores and from carnivores to ...... consumers.

complete the paragraph by choosing the appropriate words given in the brackets : (external, inhalation, alveolar, breathing, resptration, exhalation) Release of energy from the assimilated food is called .......... Inhalation and exhalation is called ................. When.............. is done, air enters the lungs. The oxygen from this air enters the blood while carbon dioxide from the blood exits from the blood, Through .................. CO_2 is given out. This gaseous exchange occurs through ......... membrane. This is called................ respiration. The RBCs carry oxygen to every cell.

Complete the paragraph by choosing the words given in the bracket : (Pathogen, broad spectrum, bacteria, Medicine, antibiotics, fungi) Carbon compounds obtained from some bacteria and ......... for destroying or preventing the growth of harmful micro-organisms are called '...........' Antibiotics, a discovery of the 20th century, have brought about a revolution in the field of... Antibiotics mainly act against .......... Some antibiotics are useful against a wide variety of bacteria. They are called ......... antibiotics. They are used when the ......... cannot be identified.

Answer the following Read the paragraph and answer the questions given below it. A biotic carbon atoms are circulated into the biotic form through processes like photosynthesis and respiration. Green plants convert carbon dioxide into carbohydrates and also produce carbon compounds like proteins and fats. Biotic compounds are transported from plants to apex consumers through intermediate trophic levels. After the death of all types of consumers, carbon is recycled by biotic decomposition. The carbon recycled in this way goes into the atmosphere and can be taken up by living organisms thus ensuring circulation and recycling of carbon in the biosphere. By which process do green plants convert atmospheric carbon into carbohydrates?

Answer the following Read the paragraph and answer the questions given below it. A biotic carbon atoms are circulated into the biotic form through processes like photosynthesis and respiration. Green plants convert carbon dioxide into carbohydrates and also produce carbon compounds like proteins and fats. Biotic compounds are transported from plants to apex consumers through intermediate trophic levels. After the death of all types of consumers, carbon is recycled by biotic decomposition. The carbon recycled in this way goes into the atmosphere and can be taken up by living organisms thus ensuring circulation and recycling of carbon in the biosphere. What process plays a significant role to ensure that carbon is available to living organisms even after the death of apex consumers?

Answer the following Read the paragraph and answer the questions given below it. A biotic carbon atoms are circulated into the biotic form through processes like photosynthesis and respiration. Green plants convert carbon dioxide into carbohydrates and also produce carbon compounds like proteins and fats. Biotic compounds are transported from plants to apex consumers through intermediate trophic levels. After the death of all types of consumers, carbon is recycled by biotic decomposition. The carbon recycled in this way goes into the atmosphere and can be taken up by living organisms thus ensuring circulation and recycling of carbon in the biosphere. Draw a simple food chain to show transfer of carbon from plants to decomposers.

Answer the following Read the paragraph and answer the questions given below it. A biotic carbon atoms are circulated into the biotic form through processes like photosynthesis and respiration. Green plants convert carbon dioxide into carbohydrates and also produce carbon compounds like proteins and fats. Biotic compounds are transported from plants to apex consumers through intermediate trophic levels. After the death of all types of consumers, carbon is recycled by biotic decomposition. The carbon recycled in this way goes into the atmosphere and can be taken up by living organisms thus ensuring circulation and recycling of carbon in the biosphere. Which bio-geo-chemical cycle is described in the given paragraph?

Complete the paragraph by choosing the appropriate words given in the , bracket : (Lungs. heart, carcinogenic, nervous, intoxicating, hazardous, addictions, peer-group) The children fall into the trap of .......... either due to ............. pressure or due to false symbol of high standard living. Sometimes they try to imitate their elders. The addictive substances are............ and they cause long term effects. Some are temporarily ............ substances obtained from the plants. While some of the chemical ingredients in them can permanently damage the human ............ system, muscular system, ............, etc. Some tobacco like substances are ........... in action especially on the mouth and.............

Complete the paragraph by choosing the approprite words given in the brackets: (Nocardia, Geobacter, Ideonella sakaiensts. Pseudomonas, Alcanovorax borkumensis, hydrocarbonoclastic, Acidophillium, streptomyces) Bacteria like ................. spp. and ............ have the ability to destroy the pyridines and other chemicals. Hence, these bacteria are used to clear the oil spills. These are called .............. bacteria. It has been observed that species like Vibrio, ................. can decompose the PET. Similarly, species of fungi like ........ .... have ability of decomposing rubber from garbage. Sulphuric acid is source of energy for some species of bacteria like .............. Hence, these bacteria can control the soil pollution occurring due to acid rain. .. ...... - convert the salts of uranium into insoluble salts.

Complete the paragraph by choosing the words given in the bracket: (consumption, smoking, tremors, cancer, uncontrolled, harmful) Tabacco smoke contains many ………chemicals. They cause……cell division. Tabacco smoke is full of minute carbon particles which causes normal tissue of the lung to transform into thickened black tissue. This causes........while chewing tabacco or tabacco products much of the extract is absorbed into the body. Excessive tabacco........many cause cancer of lips or tongue, visual disorders or..........To protect one's body from cancer one must avoid .........and consumption of tabacco and tabacco products in any form.

Complete the paragraph by choosing the approprite words given in the brackets: Complete the papragraph using proper words: (mechanical, Rhizobium, aquatic, Toxic, co_2 Nitrogen, Pseudomonas, Amoeba, bacteria, hydrocarbons) Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to organisms. It is not easy to remove the oil layer from surface of water by ............. method. However, bacteria like ................ spp. and Alcanovorax borkumensis have the ability to destroy the pyridines and other chemicals. Hence. these ................ are used to clear the oil spills. These are called hydrocarbonoclastic bacteria (HCB). HCB decompose the ....--.----- and bring about the reaction of carbon with oxygen. ...--------- and water is formed in this process.