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$ Seive tubes in plants are formed of en...

$ Seive tubes in plants are formed of enucleated cells called seive members.
! All the activities of a seive cell are controlled by nucleated parenchyma cells.

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

Verified by Experts

The correct Answer is:
C
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DINESH PUBLICATION-ENVIRONMENTAL ISSUES-Assertion and reason
  1. $ Morphology deals with the study of external characters of the organi...

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  2. $ Cuscuta is dicot plant. ! In cuscuta the cotyledons are absent.

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  3. $ Seive tubes in plants are formed of enucleated cells called seive me...

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  4. $ Pollination with the help of a pollen tube is called porogamy. ! ...

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  5. $ Velamen tissue can directly absorb moisture from the atmosphere ! ...

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  6. $ Seredipidty refers to discoveries as a result of thorough research. ...

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  7. $ Dinoflagellates have two grooves in the cell wall. ! There are man...

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  8. $ Fungi may be sometimes autotrophic. ! Stored food material in Fung...

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  9. $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move t...

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  10. $ Funaria plant is monoecious. ! Monoecious plants are those which a...

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  11. $ Rhizoids of female gametophyte of selaginella are multicellular. !...

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  12. $ Those plants which produce seeds, without the formation of fruits ar...

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  13. $ Soil soluiton is absorbed by all the parts of a root . ! Soil solu...

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  14. $ The first photosynthetic organisms which show oxygenic photosynthesi...

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  15. $ Anarobic respiration occurs in the aquatic organisms. ! Aquatic or...

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  16. $ Heritiera has pneumatophores. ! Respiratory roots are also called ...

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  17. $ Those parts of the plants which help in vegetative reproduction are ...

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  18. $ Air layering is performed in those plants which have many, long flex...

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  19. $ Gravitational water is that which reaches the water table of the ear...

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  20. $ Those genes which are present on "Y" chromosomes of human beings are...

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