MEDIUM
Earn 100

Assertion : Red algae contribute in producing coral reef.
Reason : Some red algae secrete and deposit calcium carbonate out their walls.
(a)Both the assertion and the reason are true and the reason is a correct explanation of the assertion
(b)Both the assertion and reason are true but the reason is not a correct explanation of the assertion
(c)Assertion is true but the reason is false
(d)Both the assertion and reason are false
(e)Assertion is false but reason is true

50% studentsanswered this correctly
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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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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MEDIUM

EASY

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

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

EASY

