Name sub-divisions of spermatophyte and state the characteristics of each class

      

Name sub-divisions of spermatophyte and state the characteristics of each class

  

Answers


Eric
i. Gymnospermae (cornifers)
- naked seeds (exposed
- are all woody trees
- reproduce by means of cones
- show xerophytic characteristics
- xylem have tracheids but lack vessels
- phloem lacks companion cells
- single fertilization
- pollen lands directly on ovules

ii. Angiospermae (flowering plants)
- reproduce by flowers
- seeds enclosed (in fruits)
- flowers bisexual hence double fertilization
- herbaceous
- pollen grains land on stigma of pistil
- xylem contains vessels
- phloem contains companion cells
- ovules contained in ovary


ericmunguti answered the question on October 5, 2018 at 05:18


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