MOVEMENTS OF SOME COMMON PLANTS
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The growth of the following plants is here speeded up from 40 to 1 trillion: sunflower, garden pea, mushroom, scarlet bean, cucumber, blood root, night-blooming cereus and marsh mallow. Directed reactions in a field of force (tropisms) are studied first; then higher reactions including reflexes and chains of reflexes lead up to a review of nervous system activity. Such reactions as geotropism, hydrotropism, stereotropism, galvanotropism, and rheotropism are studied.
Complete catalog record
Dewey number: 581
Audience level: jh-sh-c-adult
Format/cost: 16-sl-$25; rent $2
Distributors / rental: Bell & Howell Company $2; Ohio Department of Education
Audience level: jh-sh-c-adult
Format/cost: 16-sl-$25; rent $2
Distributors / rental: Bell & Howell Company $2; Ohio Department of Education
Sources
- Educational Film Guide 1946 — title, year, creator, length, format, description, catalog record
- Bell & Howell Filmosound Library Catalog of Educational Motion Pictures, 1942 — title, creator, length, format, color, sound, genre, description
Record added 2026-07-02 14:19:58