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Read the statements (A) Chemosynthetic a...

Read the statements (A) Chemosynthetic autotrophs like hydrogen bacteria oxidize molecular hydrogen to water are called as organotrophs (B) Chemosynthetic bacteria do not have photosynthetic pigments (C) Chemosynthetic autotrophs like iron bacteria oxidize ferrous to ferric are called as lithotrophs

A

A,B, correct C wrong

B

A, C, correct B wrong

C

C, B, correct A wrong

D

A, B, C correct

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The countries which do not have oil reservoirs in their land import oil from other countries. But sometimes during transporting oil through sea routes, accidental oil spilling occurs. This oil spilled in the ocean may prove fatal and toxic to aquatic animals. Therefore, removel of this spilled oil is essential for protection of aquatic life. For removing this oil layer, certain microbes like Pseudomonas spp. and Alcanivarax borkumensis are used. These microbes have the ability to destroy the pyridines and other toxic chemicals. The hydrocarbonoclastic bacteria (HCB) are able to decompose the hydrocarbons and bring about the reaction carbon with oxygen resulting in formation of C O 2 and water. Like oil spills cause damage to aquatic life. plastic forms the major part of the garbage on land. Plastics are difficult to degrade as they are made up of PET. By research, various species like Vibrio and Idenoella sakaiensis which can degrade PET have been identified. There are certain species of microbes which can decompose rubber from garbage. Based on the given paragraph answer the following question.Why should there be a ban on plastic bags ?

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.

NIKITA PUBLICATION -PHOTOSYNTHESIS-EXERCISE
  1. Which of the following acts as bridge between inorganic and organic wo...

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  2. The organisms convert simple inorganic substances into organic compoun...

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  3. Read the statements (A) Chemosynthetic autotrophs like hydrogen bacter...

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  4. The organisms which utilize solar energy and convert it into food are ...

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  5. Amount of solar energy used for synthesis of carbohydrate food by phot...

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  6. Match the columns and find out the correct combination:

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  7. The photosynthesis in marine water is... and on land ....takes place

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  8. Morphology and anatomy of a leaf,is more useful during photosynthesis ...

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  9. The CO2 content in the atmosphere is

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  10. All of the following are true except

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  11. Which of the following process prepare food of all organisms directly ...

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  12. The water absorbed by the plants for the process of photosynthesis is ...

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  13. Most autotrophs store energy in the form of

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  14. Photosynthesis is a

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  15. A cell that lacks chloroplast does not ………in highter plants

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  16. During photosynthesis…………

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  17. During day light hours, the rate of photosynthesis in higher than that...

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  18. Photosynthesis is mainly responsible for the existence of

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  19. H2S is used as hydrogen donor in

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  20. Chlorobium chlorophyll is found in

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