Cycas has two cotyledons but is not included in angiosperms because of : -

15 2001 AIPMT Plant KingdomGymnosperms Easy
Cycas has two cotyledons but is not included in angiosperms because of : -
A Naked ovules
B Seems like monocot
C Circinate ptyxis
D Compound leaves

Detailed Solution

Angiosperms have ovules enclosed in an ovary, which later becomes the fruit.
Cycas is a gymnosperm: its ovules are borne naked on megasporophylls and are not enclosed in an ovary, so its seeds are also naked.
Having two cotyledons does not make a plant an angiosperm.
So Cycas is not an angiosperm because of its naked ovules.

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Practise Gymnosperms All 16 questions This chapter in 2001 AIPMT