EVERYDAY SCIENCE

Detailed explanation-1: -Cycas is dioecious i.e. male cone and female cone (lax) born on separate sporophytes. The male sporophyte is heterogametic having sex chromosomes-XY while the female sporophyte is homogametic having sex chromosomes-XX. Male Cone: Male cone is ovoid or conical and grow up to 1.5 m.

Detailed explanation-2: -The gametophytes of Cycas are of 2 types: male or microgametophyte and female or magagametophyte. Female gametophyte is retained whereas male gametophyte is transfer during pollination. Reproductive organs: After many years of vegetative growth sex organs develop on Cycas sporophytes in the form of cones or strobili.

Detailed explanation-3: -Cycad palms are known as sago palms (Cycas cirinalis), Japanese cycad (Cycas revoluta), cardboard palms (Zamia furfuracea), coontie plants (Zamia pumila), or simply by their genus Cycads, Zamias, or Macrozamia.

Detailed explanation-4: -Because cycads are a group of cone-bearing plants that are the oldest seed plants in the world. In simple terms, this means that cycads do not produce true flowers or fruit, just one or more large seed cones. Cycads are dioecious, so cycad cones are either male or female.