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BIOLOGY Y11
Evolution of Australian Biota
CLOZE PASSAGE No 1
Australia’s Biological History
Complete the following sentences using appropriate words or short phrases
a) The movement of large plates over the surface of the earth is called
Plate tectonics
b) The super continent Pangea splits to become the continents of Laurasia and ……….
Gondwana
c) 2 types of plant fossil that show links between Aust and South America and Antarctica
Glossopteris and
Gangamopteris
d) Appear where ocean plates are moving apart
Mid ocean ridges
e) The largest animals to roam the earth were collectively known as ………….
Megafauna
f)
There death was thought to be caused by …………………. change or ……………
interaction
Climate/ human
g) 2 scientists that put forward the theory of natural selection
Darwin and Wallis
h) Darwin sailed aboard the HMS …………… and visited the ………………. Islands
Beagle/ Galapagus
i)
I an organism lives to an age where it can reproduce it is said to be …………..
Biologically fit
j)
Organisms that reproduce sexually will show v……………. within the species
variation
k) The theory of evolution states that all organisms share a c……………….a…………..
Common ancestor
l)
Natural selection
The environment selects organisms to survive
m) That part of the environment that is responsible or selects organisms to survive
n)
In the famous debate between Wilberforce and Huxley, who was on the side of
evolution
Selecting agent
Huxley
o) F…………………is the joining together of 2 sex cells to form a z……………
Fertilisation / zygote
p) Sex cells are called
Gametes
q) The male sex cell is called a ………….. and the female sex cell an…………..
Sperm / ovum
r) Sperm are made in the ……………… and ova in the …………………
Testes / ovaries
s) Gametes contain ……………. The number of chromosomes and are said to be ……..
Half /Haploid
t)
A body cell containing the full compliment of chromosomes is said to be ……………..
and is given the symbol …………….
Diploid / 2N
u) The full number of chromosomes in a human body cell is ………………
46
v) Fertilisation occurring outside the body is called ………………….. fertilisation
external
w)
The male part of a flower is called the ……………….. and it produces the male sex cell
Stamen/Pollen
………………….
x) The pollen falling onto the stigma of a plant is called………………..
Pollination
y) The part of the plat that develops into the seed is called the ……………….
ovule
z) The part of the plant that often develops into the fruit is called the…………….
ovary