[Stems – leaves – roots]

3- The stems of desert plants are mostly -------------

[Short and weak – strong and tall – short and strong]

4- The stem of Elodea plant is --------------- [strong – elastic – both]

5- -------------- is an example of animals that undergo hibernation.

[Desert snail – jerboa – frog – all the previous]

6- Water is stored in the leaves of ------------------ plant.

[Elodea – cactus – calamagrostis – opuntia]

7- Leaves are reduced into spines in the ------------------- plant.

[opuntia – cactus – wheat – Elodea]

8- Camel stores the food in its hump in a form of -------------------

[Proteins – fats – water]

Q.4: Compare between Elodea plant and calamagrosits plant from:

Point of comparison	Elodea	calamagrosits
The environment	--------------------	--------------------
Roots	--------------------	--------------------
Leaves	--------------------	--------------------
Stem	--------------------	--------------------

Q.5: Mention an example that clarifies:

1- Camouflage: --------------------------------------------------------------------------

2- Hibernation: --------------------------------------------------------------------------

3- Aestivation: ---------------------------------------------------------------------------

Q.6: What happen in the following cases:

1- Absence of air chambers in the elodea plant's stem.

----------------------------------------------------------------------------------------------

2- The disability of some living organism to adapt with the environment.

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Lesson 1

Q .1: Write the scientific term:

1- Organisms that can't bee seen with naked eyes. [---------------------------]

2- It is a branch of biology searching the similarities and differences among living organisms. [---------------------------]

3- The plants in which their seeds are formed inside cones not inside apericarp. [---------------------------]

4-Plants that can’t be distinguish into roots, stems or leaves.

[---------------------------]

5- Invertebrate animals that characterized by a type of legs known as jointed legs. [---------------------------]

6- Arthropods that have 3 pairs of joint legs. [---------------------------]

7- Arthropods that have 4 pairs of joint legs. [---------------------------]

8- Arthropods that have more that 4 pairs of joint legs. [-------------------------]

9- Mammals that have one pair of incisors in each jaw. [-------------------------]

10- Mammals that have two pairs of incisors in the upper jaw and only one pair in the lower jaw. [---------------------------]

11- The scientist who had considered the species as fundamentals of a natural classifying system. [---------------------------]

12- A group of more similar living organisms shape that can reproduce to give birth of new fertile individuals. [---------------------------]

13- Small terrestrial plants that are reproduce by formation of seeds.

[---------------------------]

Q.2: What is meant by each of the following?

1- Taxonomy: ---------------------------------------------------------------------------

2- Species: -------------------------------------------------------------------------------

3- Arthropods: --------------------------------------------------------------------------

4- Rodents: -------------------------------------------------------------------------------

Q.3: Choose the correct answer:

1- Spider is ------------------- [insects – myriapods – mammals – arthropods]

2- From plants that reproduce by spores -------------

[Pine – bean – voughair – wheat]

3- From animals that don't have body support is ------------------

[Reptiles – snails – jelly fish – bony fish]

4- Ferns are characterized by reproduction by ---------------

[Seeds – spores – seeds & spores]

5- Maize is a------------plant.[Gymnosperm – Dicotyledon – monocotyledon]

6- The number of spider's legs are ------------- [3 – 4 – 44 – 1000]

7- ------- is considered as insect. [Ants – spiders – scorpion – scolopendra

8- ----------------- is from the teethless animals. [Mouse – rabbit – squirrel- Armadillo]

Q.4: Give the scientific reason:

1- Hedgehog is characterized by the presence of extending outwards teeth.

----------------------------------------------------------------------------------------------

2- When zebra mates a donkey, they can't produce fertile individuals.

----------------------------------------------------------------------------------------------

3- It is important to classify livings.

----------------------------------------------------------------------------------------------

4- Algae are different from camphor plants in their shape.

----------------------------------------------------------------------------------------------

5- Scorpion and spider are not insects.

----------------------------------------------------------------------------------------------

6- Teeth of rodents are different from teeth of lagomorphs.

----------------------------------------------------------------------------------------------

Q.5: Cross out the unsuitable word:

1- Lion – tiger – dog – armadillo – wolf

2- Bean – pea – maize – pine – wheat

3- Locusts – flies – cockroaches – spider – mosquito

4- Octopus – desert snail – frog – fresh water mussels – tilapia

5- Pine – cycas – bean

Q.6: Mention one difference between each of the following:

Rabbit	Squirrel
------------------------------------------- ------------------------------------------ ------------------------------------------	------------------------------------------- ------------------------------------------ ------------------------------------------
Beans	Wheat
------------------------------------------- ------------------------------------------ ------------------------------------------	------------------------------------------- ------------------------------------------ ------------------------------------------
Spider	Locusts
------------------------------------------- ------------------------------------------ ------------------------------------------	------------------------------------------- ------------------------------------------ ------------------------------------------
Voughair	Adiantum
------------------------------------------- ------------------------------------------	------------------------------------------- ------------------------------------------

Q.7: Complete the following statements:

1- Examples of teethless mammals are ------------------, ------------------

2- Arthropds can be classified into -----------------, ---------------- & --------------

3- The principles used to classify plants are ----------------- & -----------------

4- --------------- is the basic unit of classification in living organisms.

5- ---------------- & ---------------- have pointed canines and molars with sharp projections.

6- Ferns are reproducing by formation of -------------------

7- An example of angiosperms is ------------------- and of gymnosperms is -----

8- Rabbit has two pairs of incisors in the -------------- jaw and one pair in the ------------------ jaw.

Q.8: Classify the following plants by the suitable way of classification:

Plant	Way of classification
Wheat	-------------------------------------------------------------------------
Vaughair	-------------------------------------------------------------------------
Pine	-------------------------------------------------------------------------
Cycas	-------------------------------------------------------------------------
Bean	-------------------------------------------------------------------------
Pea	-------------------------------------------------------------------------
Adiantum	-------------------------------------------------------------------------
Maize	-------------------------------------------------------------------------

Q.9: Classify the following animals according to the teeth:

Animal	Presence of teeth	No. of teeth
Lion	-----------------------------------	-------------------------------------
Squirrel	-----------------------------------	-------------------------------------
Tiger	-----------------------------------	-------------------------------------
Hedgehog	-----------------------------------	-------------------------------------
Sloth	-----------------------------------	-------------------------------------
Armadillo	-----------------------------------	-------------------------------------
Rabbit	-----------------------------------	-------------------------------------
Mouse	-----------------------------------	-------------------------------------