Australian Endotherms and Ectotherms

[babylupin]

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Hey People.

I'm new here, but i really woudl appreciate it if some one coudl help me.

i have this biolody assignment, and i have some information, but it is not enough

Okay, here's what i have to do:

1. Choose 2 Australian Endothermic and 2 Australian Ectothermic Animals.
Describe their adaptations and responses to changes in ambient temperatures.
How do these changes assist in themperature regulation?

2. Choose 2 Australain plants and identify some responses they have to temperature change.

It has to be about 2 - 3 pages long.

Thank you!

[babylupin]

yes..but i cannot get definite answers....i tried...

[Lori.]

Try HSC Online (hsc.csu.edu.au) and go to the Maintaining a Balance section in Biology. They will have examples there, as well as how they regulate temperature.

[princesskt]

hey ive gotta do that too! i tried googling too.. google can be good.. but sometimes it doesnt give the definite answers u need

[Loz_metalhead]

Endotherm-Emu
Ectotherm-water holding frog

I did those ones.

Emu-high ambient temp-reduce activity to lower metabolic activity, stay in the shade, holds out wings as it has capillaries under them

Stuff like that.

Is this actually an assessment, or just a little assignment not going towards anything?

[ari89]

Lol since theyre syllabus dot points all you need to do is look in your text book

[babylupin]

we haven't been issued with our textbooks again yet...stooopid teacher...
it is an assessment for our Maintaing a Balance Topic...we have liek heaps fo random questions about thermoregulation and enzymes etc.

[princesskt]

mine wasnt an assignment.. our teacher just gave a sheet and told us to use the compiuter. hehe my teacher is SO funny!

[LouisePrestipin]

Lizards: Ectothermy enables their body's metabolism to slow right down, allowing lizards to capitalize on scant and unpredictable food supplies. Moreover, along with other ectotherms, lizards are low-energy animals. Endothermy is much more expensive energetically. One day's food supply for a small bird will last a lizard of the same weight for over a month. Ectothermy thus has distinct advantages over endothermy under the harsh and unpredictable conditions that prevail in deserts. By means of this thermal tactic, lizards can conserve water and energy by becoming inactive during the heat of midday, during resource shortages, or whenever difficult physical conditions occur (such as during heat waves or droughts). Birds and mammals must weather out these inhospitable periods at a substantially higher metabolic cost. Hence ectothermy confers a competitive advantage on lizards over endotherms in desert environments.