Subject
Day/Date
Week
No.
:Biology
:
:
Question
Inheritamce and Selective Breeding
1
The photograph below shows a team of dogs called huskies pulling a
sledge across the ice.
Huskies need to survive in a cold climate. They must be able to pull a heavy sledge for a
long time each day.Which two features would a dog breeder look for when choosing
huskies to breed from? Choose from the list of features below and give the reason for
each choice.
2
1. Feature……………………………………………………………………………..
Reason ………………………………………………………………………………..
………………………………………………………………………………………..
2. Feature……………………………………………………………………………..
Reason ………………………………………………………………………………..
………………………………………………………………………………………..
Mike keeps pet mice. He mates a brown female mouse with a black male mouse. The
female gives birth to six offspring. Some of the offspring are black. The others are brown.
Mark (For
Teacher
Use)
(a) Name the type of cell that passed information for brown fur to some of the offspring.
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
(b) Mike wants to breed lots of brown mice.
(i) Suggest what he should do to obtain only brown mice.
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
(ii) Give a reason for your answer.
………………………………………………………………………………………………………………………………………………
3
………………………………………………………………………………………………………………………………………………
The drawings below show three dogs. They all look different.
(i) Which word describes the differences between these dogs? Tick the correct box!
(ii) The drawing below shows a puppy. Dog C is the puppy’s mother.
Why does the puppy look like his mother? Tick the correct box!
Natural Selection
4
The drawings below show the bones of the front limbs of the four animals. Some of the
bones of the human limb are labelled.
The bones of birds are hollow. How does this help birds to fly?
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
5
The diagrams show the modern horse and three of its ancestors.
(a) What evidence has been used to find out the appearance of the ancestors of the
modern horse?
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
(b) The appearance of the horse has changed over the last 55 million years.
(i) Use the diagrams to describe two ways the appearance of the horse has changed.
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
(ii) A scientist developed the theory of natural selection to explain this gradual change in
appearance. What is the name of this scientist?
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
6
Complete the sentences about fossils. Choose words from the list.
a)
Fossils are often the remains of the ……………………………………………………. parts of the
animal.
b)
The rest of the animal would have …………………………………………………….
c)
The fossil record can be used to estimate the ……………………………………………… of the
Earth.
7
Scientists think that leaf insects evolved by a process called natural selection.
(i) This picture shows a fish which is now a
(ii) Name the scientist who introduced the theory of natural selection.
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
(ii) Read these sentences about natural selection.
A.
Advantageous features were passed to the next generation of insects.
B.
Over generations some of the insects developed into a new species.
C.
Some insects looked more like leaves than others.
D.
The best adapted insects survived and reproduced.
Write the letters of the sentences in order so that they describe natural selection. One
has been done for you.
Basic Competence/Topic: Classification and Identification Keys
8
The drawing below shows a blue whale.
[1]
A long time ago people thought that the blue whale was a fish. Now we know that the
blue whale is a mammal. Give one way mammals are different from fish.
………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………….
9
Vertebrate animals are grouped into a number of classes.
Complete the sentences by naming each of the vertebrate classes that are described.
(a) A vertebrate with scaly skin and no legs could be either a ………………………………………
or a …………………………………………………………………………………………………………………………..…
[2]
(b) A vertebrate with lungs and hair is a ……………………………………… but if it has feathers
instead of hair it is a …………………………………………………………………………………………………..
[2]
Cambridge Secondary Checkpoint Science Paper 2, 2012
10
There are still undiscovered species of animals and plants in remote parts of the world.
The picture shows a newly discovered which scientists have classified and named Isothrix
barbarabrownae.
(a) Name the class of vertebrates that includes Isothrix
Circle the correct answer
Amphibian
birds
fish
mammals
reptiles
[1]
(b) give two reasons for your answer to (a)
Use information from the picture
1. …………………………………………………………………………………………………………………………………..
2. ……………………………………………………………………………………………………………………………………
[2]