Which of the following show zooidogamous oogamy?
(i) Spirogyra
(ii) Funaria
(iii) Pteris
(iv) Cycas

i, i i, i i i

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i i, i i i, i v

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i, i i i, i v

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i, i i, i v

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Solution

The correct option is B $i i, i i i, i v$
Zooidogamous oogamy is a form of sexual reproduction where one biflagellate antherozoid fuses with the egg produced by the archegonium to give rise to a zygote.
This zygote is a sporophyte with a multicellular body and remains attached to the photosynthetic gametophyte for its nutrition.
This is a characteristic feature of bryophytes, ferns and some gymnosperms such as Cycas and Ginkgo.
Thus, the correct answer is option B.

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