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$ Cryptogams are those plants which have...

$ Cryptogams are those plants which have large sized sex organs.
! Pteridophytes are the cryptogams without embryo formation.

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:
D
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Read the following five statements (A to E) and select the option with all correct statement (A) Mosses and Lichens are the first organisms to colonise a bare rock. (B) Seloginella is a homopourous pteridophyte. (C) Coralloid roots in Cycas have VAM. (D) Main plant body in bryophytes is gametophytic whereas in pteridophytes it is sporophytic. (E) In Gymnoperms, male and female gametophytes are present within sporangla located on sporophyte.

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DINESH PUBLICATION ENGLISH-ENVIRONMENTAL ISSUES-Assertion and reason
  1. A: Carrageenin can coagulate blood. R: Carrageenin is a type of phyc...

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

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

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  4. Dominant phase of bryophytes bear

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

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

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  7. Protonema occurs in the life cycle of

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

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

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

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

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

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  13. $ Double fertilization and triple fusion occurs in Angiosperms. ! Tr...

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  14. $ The animals in which body temperature varies according to the surrou...

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  15. $ The animals which give birth to young ones are called oviparous. !...

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  16. A: Secondary host of Taenia solium is pig. R: Malarial parasite comp...

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  17. $ Arthropoda is the largest group in the animal kingdom. ! Honey bee...

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  18. $ Mammals are warm blooded. ! Warm blooded animals can tolerate only...

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  19. $ Notochord is present in vertebrates. ! Notochord is always formed ...

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  20. $ The first formed embryonic cavity is called blastocoel. ! Annelids...

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