Question

In Pinus plant, the examples of old haploid, new diploid and old diploid are

• A. Embryo, perisperm, endosperm
• B. Endosperm, embryo, perisperm
• C. Testa, perisperm, embryo
• D. Endosperm, perisperm, embryo

Answer 1

The correct option is B Endosperm, embryo, perisperm

In Pinus, the microspore mother cell in the microsporangia produces the haploid pollen grains. The series of the developmental process leads to the formation of the seed. These seeds are the example of three generations of the tree in one. While the nutritive tissues (endosperm) inside the seed are haploid body cells of the female gametophyte is the old cell, the little embryonic conifer is new diploid sporophyte, whereas the tough and protective seed coat (perisperm), are the diploid cells of the parent sporophyte.