NEET BIOLOGY

Detailed explanation-1: -The Heavyweight: Coulter Pine (Pinus coulteri) Coulter pines, native to the mountains of southern California (U.S.) and Baja California (Mexico), produce the most-massive cones of any pine species. Known colloquially as “widow-makers, ” those giant pinecones can weigh up to 5 kg (11 pounds)!

Detailed explanation-2: -The female cone (megastrobilus, seed cone, or ovulate cone) contains ovules which, when fertilized by pollen, become seeds.

Detailed explanation-3: -In gymnosperms, the female gametophyte comprises one or several egg cells surrounded by a dense multicellular tissue that will nurse the embryo following fertilization.

Detailed explanation-4: -These gametes are housed in a structure called a strobilus, or cone. Female pinecones are generally found in the upper branches of the tree crown, above the male cone.