Select the odd one out w.rt wall layers of microsporangium in flowering plants

Select the odd one (wr.r.t wall layer of microsporanglum in flowering plants)

Select the odd one (wr.r.t wall layer of microsporanglum in flowering plants)

Read the following text and answer the following questions on the basis of the same: A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings. Select the odd one out with respect to wall layers of microsporangium in flowering plants.

Select the odd one out w.r.t polyembryony

Select the odd one out w.r.t polyembryony

Select the odd one out w.r.t porins

Select the odd one out w.r.t porins

Select the odd one out w.r.t haemophilia

Select the odd one out w.r.t haemophilia