Which of the following layers in the wall of an anther nourishes the developing pollen grains?
Male gametophyte with least number of cell is present in: 
Function of filiform apparatus is to: 
Which one of the following may require pollinators, but is genetically similar to autogamy? [2015 RS]
Which one of the following statements is not true? [2015 RS]
Honey is made by nectar and pollens. Bees collect pollen and nectar in the spring when most flowers and plants are in bloom. They collect them in their stomach but an hour, the nector mixes with the proteins and enzymes produced by bees, which convert nectar into honey.
The hilum is a scar on the: [2015 RS]
The hilum is a scar found on the seed coat through which the developing seeds are attached to the fruit.
Which of the following are the important floral rewards to the animal pollinators? [2015 RS]
Nectar and pollen grains are the usual floral rewards which the animal pollinators get.
Filiform apparatus is characteristic feature of: [2015 RS]
The synergid cell wall forms a highly thickened structure called the filiform apparatus at the micropylar end, consisting of numerous finger-like projections into the synergid cytoplasm. It is believed to play a major role in pollen tube guidance and reception.
Which one of the following statements is not true? 
Tapetum is important for the nutrition and development of pollen grains, as well as a source of precursors for the pollen coat.
Which of the following statements is not correct? 
Pollen grains of other species are not compactable and do not germinate on the stigma of the flower of different species.
So, the correct option is 'Pollen grains of many species can germinate on the stigma of a flower, but one pollen tube of the same species grow into the style'.