this is totally random......i just wana know cus i cnt find out anywhere.
2007-02-01 06:42:59 · 5 answers · asked by moggymad5 2 in Education & Reference ➔ Homework Help
i spelt covering wrong
sorry
2007-02-01 06:45:24 · update #1
Same way that wrapping a sandwich in waxed paper will keep the bread fresh. A wax covering is impermiable. The waxy covering on the stem prevents moisture from being taken away from the plant and retains liquids inside the stem and leaves.
2007-02-01 06:47:39 · answer #1 · answered by old lady 7 · 0⤊ 0⤋
Many species of cactus have long, sharp spines.Enlarged stems carry out photosynthesis and store water. Unlike many other succulents, the stem is the only part of a true cactus where this takes place. Much like many other plants that have waxy coatings on their leaves,
Cacti often have a waxy coating on their stems to prevent water loss. This works by preventing water from spreading on the surface and allowing water to trickle down the stem to be absorbed by the roots and used for photosynthesis.
2007-02-02 06:19:27 · answer #2 · answered by melodybungle 3 · 0⤊ 0⤋
the waxy coating has smaller pores which does not allow for a great amount of evaporation. The root system also factors in here in that it absorbs a great deal of moisture through its root hairs that is stored in the stem and leaves.
Transpiration is a process by which plants "perspire" moisture/water and the waxy coating slows down the process tremendously.
Hope this help!
2007-02-01 06:49:00 · answer #3 · answered by Patricia D 6 · 0⤊ 0⤋
This works by preventing water from spreading on the surface and allowing water to trickle down the stem to be absorbed by the roots and used for photosynthesis.
2007-02-01 06:47:42 · answer #4 · answered by lethalseduction85 2 · 0⤊ 0⤋
in the heat their water pores close up to keep hydrated whereas in night they open to let it swweat??
2007-02-01 06:48:33 · answer #5 · answered by gemma h 1 · 0⤊ 0⤋