What are the three divisions of kingdom - Plantae ? Name them and mention any four characteristics of each division with examples.
Answers
Answer:
Kingdom plantae is divided in three more group:
1) Bryophyta
2) Pteridophyta
3) spermatophyta
Characteristics of this division:
1: They are non-motile.
2:They generally reproduce sexually.
3: They follow the autotrophic mode of nutrition.
4: These are multicellular eukaryotes with cell wall and vacuoles.
5: These contain green pigment chlorophyll in their plastid.
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Answer:
This kingdom is divided into three divisions namely Bryophyta, Pteridophyta and Spermatphyta.
Bryophyta:
1.They are thalloids as in liverworts or differentiated into simple-leaf like and stemlike structures
2.They lack vascular transport system
3.They contain chlorophyll hence photosynthetic.
4.They have developed rhizoids for anchoring and absorbing water together with dissolved mineral salts.
Pteridophyta:
1.They have roots, stems and leaves but no flowers
2.Leaves are compound with leaflets known as pinna.
3.They posses clearly defined vascular system( Having xylem and Phloem)
4.They show alternation of generations
Spermatophyta:
1.The plant has roots, stems, leaves and seed bearing structures
2.They produce seeds
3.They have chlorophyll hence photosynthetic
4.They have vascular tissue is highly developed with xylem tissue consisting of both xylem tissue and tracheids.
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