Liverwort, The: Alternation of Generations
- Synopsis
- The liverwort, a standard example of alternation of generations, is examined using closeup and time-lapse photography. The role of water, essential to the reproduction of bryophytes, is visualised. A laboratory experiment duplicates chemotaxis. The complete cycle from gametophyte to sporophyte and back to gametophyte is traced, with inclusion of high power microscopy of the developing egg cells and spermatocytes and the motile spermatozoids. Vegetative reproduction through gemmae completes the picture.*
- Language
- English
- Country
- United States
- Medium
- Film; Video; Film. 16mm. sd. col. 15 min. Videocassette. VHS. col. 15 min.
- Technical information
- Black-and-white / Sound
- Year of production
- 1974
- Availability
- Hire
Sale - Subjects
- Biology
- Keywords
- liverworts; plants
Distribution Formats
- Type
- Film
- Format
- 16mm
Production Company
- Name
Coronet Instructional Films
- Notes
- Use: Phoenix/BFA/Coronet Educational Media
Distributor
- Name
Viewtech Educational Media
- Contact
- Lynda Morrell
- Notes
- NB. Viewtech ceased trading in 2014 and the company’s products are no longer in distribution For over 30 years Viewtech distributed programmes from leading specialist educational producers from around the world and since 2002 it included titles previously distributed in the UK by Educational Media Film & Video. The extensive collection covered all subjects within the primary and secondary curriculum and some materials, particularly in the areas of study skills and business, are applicable to further/higher education.
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