| (i) | Modified aerial stem | Unisexual flowers tube acropetally | Chalazal entry of develop pollen |
| (ii) | Flowers achiamydeous | Pedicels of all the flowers are of same length | Presence of false whorl |
| (iii) | Cohesion of bracts forming a cup | Centrifugal opening of flowers | Male flowers many Presence of Terminal part |
| (iv) | Flower formation on one side in a spiral manner | Presence of rachilla | Terminal of the peduncle is flowersless |
A) (ii), (iii)
B) (i), (ii)
C) (iv), (iii)
D) (iii), (i)
Correct Answer: D
Solution :
In Poinsettia and Euphorbia inflorescence is cyathium, in which involucre fuse to form a cup surrounding a large achlamydous, pedicellate, tricarpellary, Syncarpous female flower. Numerous centrifugally arranged male flowers surround the female flower. In Casuarina, cylindrical phylloclades are found which are the modified aerial stems, flowers are unisexual which develop acropetally and pollen tube enters the ovule through chalazal tissues, i.e., chalazogamy.
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