EASY
Earn 100

Assertion: Chlorella could be utilised to keep the air in space vehicles.
Reason: The space travellers feed on Chlorella soup.
(a)If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(b)If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(c)If the assertion is true but the reason is false
(d)If both the assertion and reason are false

50% studentsanswered this correctly
Important Questions on Plant Kingdom
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MEDIUM
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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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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Reason (R): In Spirogyra, non flagellated gametes will fuse to form zygote.
The correct option among the following is:

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

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