Monday, October 11, 2010

Summary Practice (Follow-up from GS) - Group 1

Post your summary of the desert here.


  1. When it gets too hot in the desert, some desert birds hide in holes in cacti and drink from the flesh of cacti. Outer coverings of scorpions, spiders, insects and reptiles stop moisture from evaporating from the bodies.

    Animals stay underground to prevent water loss. Their breaths humidify their burrows which reduces evaporation. Also, seeds in burrows absorb moisture. Animals do not excrete much water through panting, sweating or urination.

    Sand grouse soaks up water with his feathers to feed its chicks. One beetle allow water to condense on its back, where it will flow into its mouth. Similarly, the Australian native mouse arranges pebbles to collect dew and licks it off.

    Cacti store much water in their stems.They absorb dew and rain quickly through their shallow root system. They have spines which lose little moisture to the air. Also, spines discourage other animals to get their stored water.

    [138 words]

  2. When it gets too hot in the desert, some desert birds take shelter in holes of cacti, its flesh stores moisture and it supplies drinking water. The scales of reptiles prevent moisture from evaporating out of their bodies. Animals stay sheltered to prevent water loss. Many of them do not sweat or pant and their urine is highly concentrated. Seeds can soak up water vapour and act as edible sponges. Kangaroo rat’s kidney extracts all the water it need from its food. The male sand grouse absorb water with its breast plumage. The beetle lift up its back into the air to condense water droplets on its body. Mouse deers lick the dew from pebbles. Plants, especially cacti, can store much water and they absorb water quickly when it rains. They also have spines instead of leaves to minimise water loss. They can also prevent other animals attempting to get water. Living organisms adapt to suit the dry desert conditions.

  3. When it gets too hot in the desert, some desert birds hide in holes in cacti and drink water from it’s flesh. Tough, spiky coverings of scorpions, spiders, insects, and the scaly skin of reptiles prevent the water from leaking out. They spend the day underground as it is a more humid atmosphere. Many of the animals do not sweat or puff, and even their urine is undiluted. Kangaroo rats have highly efficient kidneys that extract all the water they need. Male sand grouses soaks water up with their plumage and flies home to let his chicks suck the plumage. One beetle ascends sand dunes and lets the fog condense on its body and flow into its mouth. Australian Native Mice arranges pebbles outside its burrow, letting the dew accumulate, then lapping it off. Cacti, the best water storer of the desert, have large roots to absorb dew and rain before it vaporizes. Spines dissuade animals from getting the water stored.
    [150 words]