General Information

Author/Creator

Attenborough, David, 1926. director

Language

Hungarian.

Published

United Kingdom : BBC, 1995.

Physical Description

DVD-ROM (49 mins.)

Digital ver. identifier

HU_OSA_10000937

Contents/Summary

Summary

Broadcast 8 February 1995, the fifth programme explores the alliances formed between the animal and plant worlds. Attenborough dives into Australia's Great Barrier Reef and contrasts the nocturnal feeding of coral, on microscopic creatures, with its daytime diet of algae. Some acacias are protected by ants, which will defend their refuge from any predator. Besides accommodation, the guards are rewarded with nectar and, from certain species, protein for their larvae as well. Fungi feed on plants but can also provide essential nutriment to saplings (Mycorrhiza). The connection is never broken throughout a tree's life and a quarter of the sugars and starches produced in its leaves is channelled back to its fungal partners. Meanwhile, fungi that feed on dead wood leave a hollow trunk, which also benefits the tree. Orchids enjoy a similar affiliation. Lichens are the product of a relationship between fungi and a photosynthetic associate, usually algae. They are extremely slow-growing, and a graveyard is the perfect location to discover their exact longevity. Mistletoe is a hemiparasite that obtains its moisture from a host tree, while using own leaves to manufacture food. Its seeds are deposited on another by the mistletoe tyrannulet, following digestion of the fruit. The dodder (Cuscuta) is also parasitic, generally favouring nettles, and siphons its nourishment through periodic 'plugs' along its stem. The rafflesia has no stem or leaves and only emerges from its host in order to bloom – and it produces the largest single flower: one metre across.

Subjects

Genre

Documentary films

Bibliographic Information

Holdings

Item Type	Current Location	Call Number	Status	Shelving Location	Public Note
DVD-ROM	OSA Film Library	FL Record 5442	Available		-
Digital film	OSA Film Library	FL Record 5442 (HU_OSA_10000937.mp4)	Available		Access Copy, MP4 format