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[A] : Club fungi reproduce sexually . ...

[A] : Club fungi reproduce sexually .
[R] : In club fungi , dikaryotic phase is prolonged and produces fruiting bodies where spores and produced in club shaped basidia .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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When waves from two coherent source of amplitudes a and b superimpose , the amplitude R of the resultant wave is given by R = sqrt(a^(2)+b^(2)+2ab cos phi). where phi is the constant phase angle between the two waves. The resultant intensity I is directly proportional to the square of the amplitude of the resultant wave i.e I prop R^(2) i.e, I prop (a^(2) +b^(2) +2ab cos phi ) For constructive interference , phi = 2n pi " ""and"" " I _("max") = (a+b)^(2) For destructive interference , phi = (2n-1) pi "and" I_("min") = (a-b)^(2) If I_(1) I_(2) are intensities from two slits of width w_(1) "and" w_(2) then I_(1)/I_(2)=w_(1)/w_(2)=a^(2)/b^(2) Light waves from two coherent sources of intensity ratio 81 : 1 produce interference. With the help of the passage choose the most appropriate alternative for each of the following questions The ratio of maxima and minima in the interference pattern is

When waves from two coherent source of amplitudes a and b superimpose , the amplitude R of the resultant wave is given by R = sqrt(a^(2)+b^(2)+2ab cos phi). where phi is the constant phase angle between the two waves. The resultant intensity I is directly proportional to the square of the amplitude of the resultant wave i.e I prop R^(2) i.e, I prop (a^(2) +b^(2) +2ab cos phi ) For constructive interference , phi = 2n pi " ""and"" " I _("max") = (a+b)^(2) For destructive interference , phi = (2n-1) pi "and" I_("min") = (a-b)^(2) If I_(1) I_(2) are intensities from two slits of width w_(1) "and" w_(2) then I_(1)/I_(2)=w_(1)/w_(2)=a^(2)/b^(2) Light waves from two coherent sources of intensity ratio 81 : 1 produce interference. With the help of the passage choose the most appropriate alternative for each of the following questions The ratio of slit widths of the two sources is

When waves from two coherent source of amplitudes a and b superimpose , the amplitude R of the resultant wave is given by R = sqrt(a^(2)+b^(2)+2ab cos phi). where phi is the constant phase angle between the two waves. The resultant intensity I is directly proportional to the square of the amplitude of the resultant wave i.e I prop R^(2) i.e, I prop (a^(2) +b^(2) +2ab cos phi ) For constructive interference , phi = 2n pi " ""and"" " I _("max") = (a+b)^(2) For destructive interference , phi = (2n-1) pi "and" I_("min") = (a-b)^(2) If I_(1) I_(2) are intensities from two slits of width w_(1) "and" w_(2) then I_(1)/I_(2)=w_(1)/w_(2)=a^(2)/b^(2) Light waves from two coherent sources of intensity ratio 81 : 1 produce interference. With the help of the passage choose the most appropriate alternative for each of the following questions The ratio of amplitudes of two sources is

TRUEMAN BIOLOGY-Fungi -ASSERTION AND REASON
  1. [A] : Heterotrophs may be free living or symbiotic . [R] : They from...

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  2. [A] : Rusts and smuts are club fungi that parasitize cereal crops . ...

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  3. Assertion : The fungi are widespread in distribution and they even liv...

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  4. [A] : Symbiosis is also furnished by mycorrhiza . [R] : In Mycorrhiz...

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  5. [A] : Phytoalexins are formed as a result of fusion between auxins and...

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  6. [A] : Zygospore fungi produce spores within sporangia . [R] : During...

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  7. [A] : Club fungi reproduce sexually . [R] : In club fungi , dikaryot...

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  8. [A] : The sterile portion of sporangium in Mucor is called columella ....

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  9. [A] : Fungi are thallophyta . [R] : Cell wall of fungi is made up of...

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  10. [A] : Fungi are either saprobes or parasitic . [R] : Fungi posses ha...

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  11. [A] : Aspergillus is used as bioindicator . [R] : Aspergillus niger ...

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  12. [A] : Rhizopus contains two types of hyphae . [R] : The unbranched h...

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  13. [A] : Puccinia graminis is autoecious . [R] : It complete its life c...

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  14. [A] : Schizosaccharomyces is also called the fission yeast . [R] : S...

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  15. [A] : Ascomycetes and basidiomycetes are septate fungi . [R] : The h...

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  16. [A] : Myxomycetes are not true fungi . [R] : Myxomycetes possess cha...

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  17. [A] : Aflatoxins are produced by fungus . [R] : Aflatoxins are carc...

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  18. [A] : Amanita is called toadstools . [R] : Amanita is a poisonous fu...

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  19. [A] : Yeast are used in baking industry . [R] : CO(2) produced durin...

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  20. [A] : Foliose lichens show similarity with dicot leaves [R] : They b...

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