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$ Mycorrhiza is a type of symbiosis. !...

$ Mycorrhiza is a type of symbiosis.
! Lichens have phycobiont and mycobiont.

A

If both As and R are correct and R is correct explanation of As

B

If both As and R are correct but R is not correct explanation of As

C

If As is correct, R is wrong

D

If both As and R are wrong.

Text Solution

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The correct Answer is:
B
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DINESH PUBLICATION ENGLISH-ENVIRONMENTAL ISSUES-Assertion and reason
  1. Yeasts form a pseudomycelium. Yeast are prokaryotic.

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  2. $ In Basidiomycetes, there are preset dikaryotic cells called Synkaryo...

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  3. $ Mycorrhiza is a type of symbiosis. ! Lichens have phycobiont and m...

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  4. $ Puccinia graminis causes rust disease of wheat. ! Sexual reproduct...

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  5. $ That branch of science which deals with the study of Fungi is called...

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  6. $ Tracheophytes are the plants with vascular tissues. ! Tracheophyte...

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  7. $ A simple but dominant gametophyte is called Prothallus. ! Prothall...

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  8. A: Chlamydomonas has many pyrenoids. R;Pyrenoids help in the storage ...

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  9. A: Carrageenin can coagulate blood. R: Carrageenin is a type of phyc...

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  10. $ Formation of motile gametes occurs in Red Algae. ! Motile gametes ...

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  11. $ Cryptogams are those plants which have large sized sex organs. ! P...

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  12. Dominant phase of bryophytes bear

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  13. $ Circinate ptyxis is found in Angiosperms. ! The male reproductive ...

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  14. $ Asexual reproduction is also called Apomixis. ! Apogamy shortens t...

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  15. Protonema occurs in the life cycle of

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  16. $ Fertilization with the help of a pollen tube is called Siphonogamy. ...

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  17. $ Flower is a modified shoot which helps in sexual reproduction. ! M...

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  18. $ Self pollination in bud condition of a flower is called cleistogamy....

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  19. $ Angiosperms produce seeds, but do not produce fruits. ! Fruit and ...

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  20. A: Orthotropous ovule has micropyle at the upper end. R: Ovule is al...

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