Spermatophytes are divided into major plant groups based on specific structural, vascular, and reproductive characteristics. Match each plant group listed on the left with its corresponding diagnostic feature on the right.
- GymnospermsSeeds exposed on megasporophylls/cones with haploid nutritive tissue formed before fertilization
- AngiospermsOvules enclosed within an ovary wall and characteristic occurrence of double fertilization
- MonocotyledonsEmbryo with a single cotyledon, leaves with parallel venation, and scattered stem vascular bundles
- DicotyledonsEmbryo with two cotyledons, leaves with reticulate venation, and stem vascular bundles in a ring
Answer
Gymnosperms match with exposed seeds on cones and haploid nutritive tissue; Angiosperms match with ovules enclosed in an ovary wall and double fertilization; Monocotyledons match with single cotyledon, parallel venation, and scattered vascular bundles; Dicotyledons match with two cotyledons, reticulate venation, and vascular bundles in a ring.
Gymnosperms are defined by exposed (naked) seeds on cones with haploid nutritive gametophyte tissue. Angiosperms bear protected seeds inside fruits developed from ovaries and undergo double fertilization. Within angiosperms, monocotyledons are characterized by a single cotyledon, parallel leaf veins, and scattered vascular bundles, whereas dicotyledons exhibit two cotyledons, reticulate leaf venation, and a circular arrangement of vascular bundles in stems.
Step-by-Step Solution
Key Concept
Diagnostic morphological, anatomical, and reproductive differences among Gymnosperms, Angiosperms, Monocotyledons, and Dicotyledons.