Phloem

Year Published: 1982

Creator: BRITISH BROADCASTING CO-TV 630 FIFTH AVE NEW YORK NY 10020

Format: 16mm

Sound: sound

Description: Reports on the partially understood relationship between the function of phloem and the structure of sieve tubes. Scans prepared views of organisms using both an electron microscope to illustrate the position, appearance and differentiation of sieve tubes to determine their internal resistance to flow.


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