Binary fission is longitudinal in
(A) Amoeba
(B) Plasmodium
(C) Vorticella
(D) Paramecium
1 Answers
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`U^(235) + n^(1)rarr` fission product + neutron + 3.2`xx 10^(-11)j`. The energy released , when 1g of `u^(235)` finally undergoes fission , is
Correct Answer - C 235 g of u-235 contains `6.023xx10^(23)` atoms 1g u-235=`(6.023xx10^(23))/(235)atoms` `therefore` Energy relaeased =`(3.2xx10^(-11)xx6.023xx10^(23))/(235)j` `=8.21xx10^(10)j` `8.21xx10^(7) kj`
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In Protozoa like Amoeba and Paramecium, an organelle is found for osmoregulation which is
Correct Answer - A Unicellular organisms such as Amoeba, Paramecium have some organelles These are freshwater animals i.e., they live in hypotonic solution. Therefore, water flows from outside to inside of...
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The chief advantage of encystment to an Amoeba is
Correct Answer - B (b) Encystment of Amoeba is occurred regularly to tide over unfavourable conditions like drought and extreme temperature, etc. During these conditionns, the Amoeba forms a covering or...
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The part of life cycle of malarial parasite Plasmodium vivax, that is passed in female Anopheles is
Correct Answer - A (a) Sexual phase in the life cycle of Plasmodium occurs in the gut of mosquito. Sexual phase involves the gametocytes, megagametocytes (female) and microgametocytes (male) which reach...
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In Amoeba and Paramecium osmoregulation occurs through
Correct Answer - C (c) Amoeba and Paramecium contains two contractile vacuoles (anterior and posterior, the latter being faster) for osmoregulation, i.e. maintaining water balance in the body.
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Genetic information in paramecium is contained in
Correct Answer - A (a) Ciliates (Paramecium) show nuclear dimorphism, large macronucleus controls metabolic activities and growth. It is called vegetative nucleas. Micronuclus contains genetic information and thus, takes part in...
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Plasmodium, the malarial parasite, belongs to class
Correct Answer - C (c) Plasmodium, the malarial parasite belongs to class - Sporozoa. Sporozoans are intracellular parasites, reproduce by multiple fission and life cycle may include the two different hosts.
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The `._(92)^(235)U` absorbs a slow neutron (thermal neutron) & undergoes a fission represented by (i) The energy release E per fission. (ii) The energ
Correct Answer - [(i) 200.68 MeV` (ii) `22.86 MWh`]
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Mention the four events that occur during binary fission in Amoeba.
1. The cell elongats. 2. The amount of cyptoplasm and nucleus gets doubled. 3. A furrow forms. 4. The cell divides to give rise to 2 daughter cells
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Calculate the energy released by fission of 1 g of `._(92)^(235)U`, assuming that an energy of 200 MeV is released by fission of each atom of `.^(235)
Correct Answer - `5.1 xx 10^(23) MeV`
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