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Pyrenoids are made up of
(a)Core of starch surrounded by sheath of protein.
(b)Core of protein surrounded by fatty sheath.
(c)Proteinaceous centre and starchy sheath.
(d)Core of nucleic acid surrounded by protein sheath.

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Important Questions on Plant Kingdom
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S.No | Type of flagellum | Type of flagellum | Example |
I | Pantonematic | One row | Euglena |
II | Stichonematic | Two rows | Astasia |
III | Acronematic | Absent | Polytoma |
IV | Pantacronematic | Two or more rows | Urceolus |



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The cell wall of Gracilaria has an outside gelatinous coating.
Dictyota has flagellated spermatium.
Hornworts show haplodiplontic life cycle.
Volvox zygote acts as a zoospore.

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Reason (R): In Spirogyra, non flagellated gametes will fuse to form zygote.
The correct option among the following is:

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Identify the figures given below marked as A, B, C, and D.

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