Question

According to Oswald Tippo, Angiosperms are placed under

• A. Atracheata
• B. Thallophyta
• C. Tracheophyta
• D. Spermatophyta

Answer 1

The correct option is C Tracheophyta

Oswald Tippo, University of Illinois 1942, classified plant kingdom into two sub-kingdom; Thallophyta (thalloid plant body without distinct alternation of generations and no embryo) and Embryophyta (organ level differentiation of plant body with regular alternation of sporophyte and gametophyte generations and embryo present). Since, algae and fungi lack embryo, they are placed in sub-kingdom Thallophyta which makes option B incorrect. Sub-kingdom embryophyta includes Bryophyta/Atracheata (dominant gametophyte generation and absence of vascular tissues) and Tracheophyta (sporophyte dominant with advanced vascular tissues). Option A is incorrect as Atracheata includes non-vascular plants while angiosperms are vascular plants. Tracheophyta includes four subphyla, these are namely Psilosida, Lycopsida, Sphenopsida and Pteropsida. Pteropsida includes three classes: Filicinae (ferns), Gymnospermae (gymnosperms) and Angiospermae (angiosperms) which makes option C correct. The group “Spermatophyta” was not mentioned in his classification which makes option D incorrect. Thus, the correct answer is option C.