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Coralloid roots of Cycas possess a symbi...

Coralloid roots of Cycas possess a symbiotic alga

A

Aulosira

B

Anabaena

C

Oscillatoria

D

Chlorella

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The correct Answer is:
B
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[A] : Coralloid root of Cycas is confined to bacterial zone. [R] : Nucleus is absent in young sieve cells .

Algal zone is characteristic of (a) Coralloid root of Cycas (b) Normal root of Cycas (c) Normal root of Pinus (d) Mycorrhizal root of Pinus

Besides normal roots , Cycas possesses another type of roots near the soil surface and called