
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.
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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.
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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: