In the classification of Spermatophytes, gymnosperms and angiosperms display distinct anatomical and reproductive features. Match each diagnostic feature listed on the left with its corresponding plant group on the right.
- Ovules borne uncovered on megasporophyll scales without an enclosing ovary wallGymnospermae
- Double fertilization yielding a diploid zygote () and a triploid endosperm ()Angiospermae
- Embryo with a single seed leaf, leaves with parallel venation, and floral parts in multiples of threeMonocotyledoneae
- Embryo with two seed leaves, leaves with net-like (reticulate) venation, and a taproot systemDicotyledoneae
Answer
Uncovered ovules match Gymnospermae; Double fertilization yielding triploid endosperm matches Angiospermae; Single cotyledon with parallel venation matches Monocotyledoneae; Two cotyledons with reticulate venation match Dicotyledoneae.
The correct pairings accurately reflect the defining evolutionary and structural traits of Spermatophytes: uncovered ovules on megasporophyll scales are characteristic of Gymnospermae; double fertilization producing triploid () endosperm defines Angiospermae; single cotyledons paired with parallel leaf venation characterize Monocotyledoneae; and two cotyledons paired with reticulate leaf venation characterize Dicotyledoneae.
Step-by-Step Solution
Key Concept
Diagnostic reproductive and structural distinctions between Gymnosperms, Angiosperms, Monocotyledons, and Dicotyledons
Estimated Time:1m 30s