How many chromosomes are present in gymnosperm endosperm if the leaf has 12 chromosomes?

Step-by-step solution

Gymnosperms are a group of vascular plants that reproduce by means of spores such as cycas, ginkgo, and conifers, etc. and these spores generally develop on the surface of scale or leaf-like appendage of cones. In gymnosperm root, stem and leaf all are diploid 2n = 12. So n will be 6 and the endosperm of a gymnosperm is haploid.