(c) Winged pollen grains are present in Pinus.
Each pollen grain has two wing-like structures which enables it to float in air, as an adaptation for dispersal by the wind.
(c) In parietal placentation the ovules develop on the inner wall of ovary or in peripheral part.
It occurs in bicarpellary or multicarpellary but unilocular ovary, e.g. mustard, Argemone etc.
(d) Bicarpellary ovary with obliquely placed septum is seen in the members of family Solanaceae, e.g. Solanum tuberosum.
(d) Basal: Sunflower, Axile: China rose, Parietal: Mustard, Free central: Dianthus.
(c) The ovary is half inferior in Plum. A half-inferior ovary is embedded or surrounded by the receptacle.
(d) Ray floret have inferior ovary. Epigynous flower are formed in family Asteraceae.
(d) Whorled phyllotaxy is a feature of Nerium and Alstonia. In Alstonia five leaves are present in a whorl.
(c) Phyllode is present in Australian Acacia.
It is modification of leaf in which lamina is absent and petiole becomes flattened and perform the function of food synthesis.
(b) Ocimum, Guava, Calotropis have Opposite phyllotaxy.
China rose, Sunflower, mustard have Alternate phyllotaxy.
Alstonia, Nerium (Oleander) have whorled phyllotaxy.
(d) In Opuntia, leaves become modified into spines to avoid transpiration so as to save water for desert adaptation.
