Port Said International Schools
Better Education for Future Generations
Science Department
Worksheet: 11
grade: 7
Date:
Name:……………………………
.
A) Complete the following statements:
1. Drosera and Dionea are examples for insectivorous.
2. Hawks have sharp strong crooked beaks to tear the prey, whereas ducks have wide
indented beaks to filter food from water.
3. Horses limbs end in hoofs to run over rocky soil whereas camel's limbs end in pad to
walk on hot sandy soil.
4. The whale front limbs are modified into paddles to perform swimming to take the role
of movement whereas they modified in the bat into wings to take the role of flying.
B) Write the scientific term that expresses each of the following statements:
1- The branch of biology that searches about similarities and differences among living
organisms
(Taxonomy)
2- The ability of some organs and tissues to do a specific function as secreting sweat.
(Functional adaptation)
C) Choose from column (B) what is suitable for column (A):
123456-
A
Hawks and eagles.
Ducks and geese.
Camels.
Horses.
Bats.
Drosera.
c
g
f
h
b
a
a.
b.
c.
d.
e.
f.
g.
h.
B
is called insectivorous plant.
are flying mammals.
have sharp curved beaks.
are classified as soft bodies.
have modified front limbs to
paddles.
have flat thick pad.
have wide indented beaks.
have strong solid hoof.
D) Correct the underlined words:
1- Migration of birds is a functional adaptation.
Behavioral adaptation
2- Structural adaptation is the ability of organs and tissues to do a certain function.
Functional adaptation
3- Rodents have sharp pointed canines.
Lions – tigers
E) Complete the following:
Compariso
n points
functional adaptation
behavioral adaptation
anatomical adaptation
Definition
Study the ability of some
organs and tissues to do a
specific function such as
secreting sweat in case of
high temperature as in
human and secreting poison
as in snakes.
As in birds migration or
some animals are active in
different times in the day
light such as the active birds
during day and night.
It studies the structural of
one body organ.
Example
Snakes
birds migration
camel pad
Sweat glands
bats
horse hoof
F) Give the reason for:
1. Some birds have long and thin beaks, and their long legs end in thin toes.
To pick up worm and snails from water.
2. Some plants pounce insects.
To absorb the nitrogenous substances needed to form protein that their body need.