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$ Protists are eukaryotes ! Eukaryotes...

$ Protists are eukaryotes
! Eukaryotes do not have the double membraned organelles.

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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Double membranous organelles

What are eukaryotes ?

$ Protists are unicellular eukaryotes. ! Eukaryotes do not have a nucleoid.

$ Kingdom Monera includes the unicellular prokaryotic organisms. ! Eukaryotes are the organisms which have a eukaryotic nucleus and double membraned organelles.

Eukaryotic Cells

Organelle covered by double membrane is

Assertion : The cells that have membrane bound organelles are called eukaryotic. Reason : The cells that lack membrane bound organelles are called prokaryotic.

Which of these statements is/are true ? (i) The surface area avaiable for cellular function in a prokaryotic cell is less than that in a eukaryotic cell. (ii) The total genome size of a prokayotic cell is always less than that of a eukaryotic cell. (iii) Unlike eukaryotes, no special respiratory respiratory organelles are found in prokaryotes. Hence they respire at a much lesser rate than eukaryotes. (iv) Eukaryotic cells show various membrane bound organelles such as chloroplasts and nucles while ribosomes are the only membrane bound organelles found is prokaryotes.

DINESH PUBLICATION-ENVIRONMENTAL ISSUES-Assertion and reason
  1. $ Sulphur depended archaebacteria are called thermoacidophiles. ! Ar...

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  2. $ Nostoc has chloropyll "a" and phycocyanin pigments. ! Chlorophyll ...

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  3. $ Protists are eukaryotes ! Eukaryotes do not have the double membra...

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  4. $ Euglena is biflagellated and has cell wall. ! Because cell wall is...

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  5. $ The glagellum in protists is single stranded. ! Single stranded fl...

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  6. $ Zygotic meiosis occurs at the time of germination of zygote. ! Zyo...

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  7. $ Meiosis is a requirements of sexual reproduction. ! Meiosis occurs...

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  8. $ In the cell wall of Dinoflagellates, there is present only one groov...

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  9. $ Euglena has mixotrophic nutrition. ! Mixtrophic nutrition means th...

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  10. $ Slime mouls are mainly saprophytic. ! Saprophytes get their nutrit...

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  11. $ Forminiferance have a calcareous shell. ! Dimorphic nucleic are pr...

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  12. $ Amoeba is a type of sporozoan. ! Sporozonas have two contractile v...

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  13. $ Fungi may be heterotrophic or autotrophic. ! Mycelium of Rhizopus ...

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  14. $ In basidiomycetes, there are present dolipore septa. ! Ascospores ...

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  15. $ Yeasts form a pseudomycelium. ! Yeast are prokaryotic.

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

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

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

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

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

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