The right answer is cotyledon.
Cotyledon is a part of the embryo of a plant in the seed, which is the first leaf. It gives the necessary supply for the transformation of the seed into a plant.
A seed may consist of a single cotyledon (monocotyledon) or two cotyledons (dicotyledon).
Taproot and xylem are not found in the seed. and Bryophytes are a group of plants.
Chromosomes condense during prophase
Cells need "oxygen" for the efficient use of glucose in cellular respiration.
Crossing over occurs in Prophase