Q.
The diagram represents the LS of monocot seed. Choose the correct combination of labeling.
[table] Column I | Column II ; Coleorhizae Food storing tissue Parthenocarpic fruit Single seeded fruit developing from monocarpellary superior ovary Membranous seed coat | Radicle Endosperm Grapes Mango Maize [/table] A B C D
A) Aleurone layer Scutellum Colepotile Coleorhiza
B) Seed coat Scutellum Coleptile Coleorhiza
C) Epithelium Scutellum Plumule Coleorhiza
D) Endosperm Scutellum Coleoptile Coleorhiza
Explanation
LS of monocot seed (Zea mays) show a broader and falttened end (lower side) and a pointed (upper side) end. Endosperm, present towards broader end contains stored food as starch with some protein and fat. Embryo, present towards pointed and upper side has an embryo axis. It bears radicle towards lower end. It is covered by root cap and an outer sheath called coleorhiza. Plumule is present opposite to radicle. It has few rudimentary leaves and is covered by protective outer sheath called as coleoptile. Scutellum is the large cotyledon which arises from middle of the embryonal axis.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.