Biology


chapter review


Q3. A) The important a-biotic and biotic features of the dusky horseshoe bat are.


An a-biotic feature is the cave or the level of light, and a biotic feature of the dusky horseshoe bats habitat is the other bats living in the cave and the insects that they are feeding on.


B) Two actions that could lead to the destruction of the dusky horseshoe bat are,


If all the insects were sprayed so that there were fewer insects for the bats to survive and therefore the bats habitat would be destroyed. And there was sum sort of natural disaster and the cave fell in the bats home would be non-existent and they would have to find another home.


C) In the order of protecting the dusky horseshoe bat I would ban the use of chemical and natural pesticides and make the bats home a protected area put up fences so that no ferial animals can get in to the caves and kill its inhabitants.


Q4. If I was given the task of making a habitat for a terrestrial mammal for it to successfully breed and live it would make the habitat mimic its original habitat where they are found, but make a few things better like make the food scores more available but make it interesting for the animal like its hunting in the wild, and make more nesting and shelter sites, I would also put a lot of indigenous shrubs and plants from the area that the animal was caught from and then eventually bring in another animal of the same type and try and make them breed.


Q5. A) In the areas that the pygmy possum lives in there is a large break in its range.


B) In the area where there are no pygmy possums live there must be a natural feature or a shortage of food that the possum will need to survive in that area or predators may be in abundance in that area or there is to much pollutants in that area where the pygmy possum is not found.


C) You could travel the whole way through the range of the western gray kangaroo and not see one, but it is most likely that you will see one. An animal might have a large range in which it lives in but the population of animals in that area might be small to nothing.


Q6. A) All the birds in question 6 share the same habitat.


B) All the birds in question 6 all feed at different places on a tree so that there is no competition for food one feeds at the top half of the trunk and another feeds at the lower half of the trunk and another feeds buy stripping off the bark from the branches and another feeds at the leaves. No competition.


C) The bell miner’s niche is to eat the insects form the leaves and the crested shrikes niche is to eat the insects living in the bark off the tree trunk the separation between these two birds is that they use different parts of the tree and are designed to get food in a different manner.


D) In the lower part of the tree the crevasses might be bigger and easer for the


Varied sitellas to collect their food and up higher up the tree the crevasses might be smaller so the varied sitellas cant get to them, or their might be a preferred food score at the bottom of the tree for the varied sitellas.


Q7. A) The variables in the graph on page 123 are the temperature and the time.


B) 1. The approximate temperature in the cushion of vegetation at noon is 29 degrease.


2. The approximate temperature of the air at noon 6 degrease.


c) Yes it dose if the trees did not drop their leaves the ground would not be covered in the thick layer of vegetation this makes a humid environment.


Q8. A) The velvet sea star and common sea star do not occupy the same niche because they are only some times found in the same spots as each other and most of the time the


The velvet sea star and common sea star occupy different depth of water only some times do their habitats cross over.


B) The firebrick sea star and the velvet sea star will not displace