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Agar, one of the commercial products obt...

Agar, one of the commercial products obtained from (A)____ and Gracilaria are used to grow microbes ad in preparations of ice-creams and jellies.

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A-Gelidium
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Which of the following option indicates the correct explanation for natural resources ? a.Sources can be created by man and utilized by man. b.Sources can be created by man and utilized by all organisms. c.Products obtained only from forests d.The naturally occurring, cannot be created by man and useful for all organisms.

Which of the following statements are true if about microbes ? (P) Both bacteria and fungi are prokaryotes. (Q) Except some microbes many microbes are useful to mankind (R) Some food materials which we take in our daily diet are obtained by microbial process. (S) Many products useful to mankind are synthesized at commercial level through microbes. (A) (P) and (S) (B) (Q), (R) and (S) (C) (P), (Q) and (R) (D) (P), (Q), (R) and (S)

Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm In the core of nucleus fusion reactor , the gas become plasma because of

Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm Assume that two deuteron nuclei in the core of fusion reactor at temperature energy T are moving toward each other, each with kinectic energy 1.5 kT , when the seperation between them is large enough to neglect coulomb potential energy . Also neglate any interaction from other particle in the core . The minimum temperature T required for them to reach a separation of 4 xx 10^(-15) m is in the range

Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm Assume that two deuteron nuclei in the core of fusion reactor at temperature energy T are moving toward each other, each with kinectic energy 1.5 kT , when the seperation between them is large enough to neglect coulomb potential energy . Also neglate any interaction from other particle in the core . The minimum temperature T required for them to reach a separation of 4 xx 10^(-15) m is in the range

ALLEN -DIVERSITY OF THE LIVING WORLD-Exercise
  1. Study the followig table and identify (i) (ii) & (iii):-

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  2. Porphyra & dictyota are belonged to which algal class respectively

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  3. Agar, one of the commercial products obtained from (A) and Gracilaria ...

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  4. Which are the pigments found in phaeophyceae?

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  5. Write the name of two unicellular algae which are rich in proteins an...

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  6. Most of the green algae have one or more storage bodies, which are loc...

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  7. Certain marine brown and red algae produce large amounts of hydrocollo...

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  8. identify A,B, C in given table:-

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  9. In phaeophyceae, the vegetative cells have a cellulosic cell wall usua...

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  10. Assertion:- Members of Rhodophyceae are called red algae Reason:- Re...

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  11. Floridean starch is similar to (A) and glycogen in structure

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  12. In which class of algae, gametes are pyriform (pear-shaped) and bear t...

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  13. Gracilaria ad Porphyra are the members of which algae class?

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  14. In liverworts, (A) are green multicellular, asexual buds, which devel...

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  15. In bryophytes, zygotes do not undergo reductino division immediately. ...

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  16. Find the ploidy level of followings with respect to bryophytes:- A-G...

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  17. In bryophytes, the dominant phase in the life cycle is the plant body...

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  18. Which part of gametophytic plant body of mass bears sex organs-antheri...

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  19. Identify the following figures (A,B):-

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  20. How many of the following have heterosporous nature? Selaginalla, Eq...

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