Chapter 36 - Resource acquisition and transport in vascular plants. This chapter describe how proton pumps function in transport of materials across membranes; define the following terms: osmosis, water potential, flaccid, turgor pressure, turgid; explain how aquaporins affect the rate of water transport across membranes; describe three routes available for short-distance transport in plants;...
The vascular flora of the Research Forest in Yen Tu, Quang Ninh was assessed between
2005 and 2006. In the area under review, 721 species belonging to 425 genera and 154 families
were identified. Among these species, these are 9 Lycopodiophyta, 34 Polypodiophyta, 8
Gymnospermae and 670 Angiospermae species (577 Dicotyledonae, 93 Monocotyledonae). The
richest 3 families are Euphorbiaceae with 52 (7.2%) species, Asteraceae with 30 (4.2%) species
and Moraceae with 30 (4.2%) species. The richest genus is Ficus L., (22 species) followed by
Syzygium Gaertn., (8 species) and Dioscorea L.
This short book is about conserving insects, the most diverse and abundant
animals that share our world. In particular, it is about the common
focus of conserving individual species of insects. This so-called ‘fine filter’
(or ‘fine grain’) level of conservation parallels much conservation effort
for better-understood groups of animals such as mammals and birds,
for which species-focused conservation exercises are commonplace.
The World Agroforestry Centre has classiﬁed
rubber-based systems in Indonesia according
to their intensity of management, as illustrated
by the photographs on the opposite page.
Intensively-managed monoculture rubber
plantations contain less than 1% non-rubber
trees, none of which have been planted
deliberately. Simple mixed rubber agroforests
contain up to one-third non-rubber trees,
which have been deliberately planted or
retained, between ﬁve and 20 non-rubber
species greater than 2 m in height and 5–20
non-rubber trees as tall as, or taller than, the
Phenolic compounds represent a large group of molecules with a variety
of functions in plant growth, development, and defense. Phenolic
compounds include signaling molecules, pigments and flavors that can
attract or repel, as well as compounds that can protect the plant against
insects, fungi, bacteria, and viruses. Most phenolic compounds are present
as esters or glycosides rather than as free compounds. Tannins and lignin are
SCN, like all plant-parasitic nematodes, is a microscopic
roundworm – a very simple animal, related to the animal-
parasitic roundworms that infect livestock and pets. The
juvenile nematode [top right] is the infective stage of
SCN – the stage that actually enters the soybean root. It
hatches from an egg [right].
The juveniles penetrate soybean roots and cause the for-
mation of specialized feeding cells in the vascular system
(veins) of the roots.