Lesson 2

Q .1: Write the scientific term:

1- A modification in a living organism or its body structure or even the biological function of its organs to become more adapted to the environmental conditions. [ ]

2- The type of adaptation that studies the structure of one body organ.

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3- The ability of some organs and tissues to do a specific function.

[ ]

4- Activity of some animals in different times of the day. [ ]

5- Birds that have sharp and strong crooked beaks to enable to tear the prey.

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6- Plants that have modified parts in order to pounce and digest the insects then absorb the nitrogenous substances that their bodies need.

[ ]

Q.2: Complete the following statements:

1- and are examples of insectivorous plants.

2- Hawks have - and crooked beaks to enable to tear the prey, while ducks have beaks to filter the food from water.

3- Horse hoof ends with - to help the horse go through the rocky soil, while the camel pad ends with to enable the camel go through hot desert sand.

4- Reasons of adaptation are -, .................&

5- Types of adaptation are , &

6- Adaptation of horse hoof is a -adaptation, while migration of birds is migration.

Q.3: What is meant by each of the following?

1- Adaptation: -

2- Structural adaptation: -

3- Functional adaptation: .................

4- Behavioral adaptation: .................

5- Insectivorous plants: - .................

Q.4: Say true () or false (x):

1- Secretion of sweat at high temperature of human body is considered behavioral adaptation. ( )

2- Migration of birds is considered as behavioral adaptation. ( )

3- The beaks of predatory birds are sharp and strong. ( )

4- The fingers of the hawks and vultures are strong and sharp. ( )

5- Water birds have palm legs. ( )

6- Ducks and geese have wide indented beaks. ( )

7- Dieonea, Drosera and halophila are examples of insectivorous plants. ( )

Q.5: Give the scientific reason for each of the following:

1- Some plants seek to eat insects.

2- Legs of some birds are palm.

3- Beaks of some birds are wide indented.

4- Legs of some birds are long and thin ending in thin fingers.

5- Beaks of some birds are long and thin.

6- Hawk has three front fingers and back one.

7- Birds have fingers end in strong and sharp claws.

8- Beaks of predatory birds are sharp and strong.

9- The front limbs of monkeys are modified into long arms.

10- The front limbs of bats are modified into wings.

11- The front limbs of dolphins are modified into peddles.

12- The horse hoof ends with a strong solid end.

13- The camel pad ends with thick flat one.

Q. 6: Complete the following diagram: