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Heterotroph

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The process in which organisms do not require light and pigment and synthesize their, food utilizing energy released by the oxidation of inorganic and organic substance is (a) Photoautotrophism (b) Heterotrophism (c) Chemosynthesis (d) Saprophytism

Assertion : The earliest organisms were anaerobes, having arisen in a sea of organic molecules, and were chemoheterotrophs Reason : Before the supply of organic molecules exhausted, some of the heterotrophs might have evolved into autotrophs.

Two kingdom system did not distinguish between the eukaryotes and prokaryotes, unicellular and multicelllular organisms and photosynthetic (Autotrophs) and non-photosynthetic (Heterotrophs) Organisms. These are demerits of two kingdom system. (True/False)

Which of the following statements are correct ? (a) Bacteria are the sole members of the kingdom monera (b) Some bacteria can survive without oxygen and some of them are pathogenic (c )Bacteria reproduce by sexual method of reproduction (d)Heterotrophic bacteria use chemical energy for food synthesis (e)Some archaebacteria show symbiotic association with cattles.

Primitive bacteria which are found in guts of ruminant animals,do not show/have,a)Heterotrophic mode of nutrition,b)Peptidoglycan in their cell wall,c) Enzymes for aerobic respiration,d) Abundance in marshy area,e)Branched chain lipids in their cell membrane

The biomass available for consumption to heterotrophs and the rate formation of new organic matter by consumers are defined as (a) gross primary productivity and net primary productivity respectively (b) net primary productivity and gross primary productivity respectively (c) gross primary productivity and secondary productivity respectively (d) net primary productivity and secondary productivity respectively.

Read the following statements and select the correct option . a. To facilitate more sound and scientific of various taxa, taxonomists have also developed subcategories. b. Only a few protozoans are heterotrophs and live as predators or parasites. (1) Both (a) and (b) are correct (2) Only (a) is correct (3) Only (b) is correct (4) Both (a) and (b) is incorrect

As per Whittaker's classification, an organism possessing eukaryotic cell structure, multicellular organisation with a cell wall and nuclear membrane, showing heterotrophic nutrition can be placed under the kingdom

Which of the following statements is incorrect regarding fungi? (a) It is a unique Ringdom of heterotrophic organisms (b) They are mostly terrestrial (c) They prefer to grow in warm & humid places (d) They are always diploid with thalloid body

Cyanobacteria and heterotrophic bacteria have been clubbed together in eubacteria of kingdom-Monera as per the 'five kingdom classificatin' even though the two are vastly different from each other. Is this grouping of the two types of taxa in the same kingdom justified ? If so, why ? Discuss the cellular composition of cyanobacteria and heterotrophic bacteria that make them introduced in eubacteria.