In plants

In animals

Q.7: Give one example for:

1- Structural adaptation:

2- Behavioral adaptation:

3- Functional adaptation:

4- Modification of front limbs in mammals: -

5- Predatory birds: -

6- Water birds:

7- Modification of bird's legs:

8- Insectivorous plants: .................

9- Birds feed on shallow water:

10- Modification of bird's beaks:

Lesson 3

Q .1: What is the scientific term of:

1- The phenomena of hiding animals in burrow or bury themselves in mud in winter. [ ]

2- The phenomena of hiding animals in humid burrows in order not to be affected by rising of temperature. [ ]

3- The insect that looks like the plant leaves exactly in colour and shape of wings. [ ]

4- An insect that looks like the branches of plants to be hardly discovered by their enemies. [ ]

5- The ability of some living organisms to be hidden from their enemies or to capture the preys in the predator species. [ ]

Q.2: Give reasons for each of the following:

1- Perishing of some living organisms and continuity of others.

2- Some birds seek to migrate from cold and polar regions.

3- Roots of aquatic plants are weak, and their leaves are ribbon like.

4- Stem of aquatic plants are elastic, contain air chambers.

5- Roots of desert plants vertically in the soil for great depths.

6- Leaves of the desert plants are small, have ribbon like and have little numbers of stomata.

7- Stems of desert plants are short, rich in chloroplasts.

8- Some animals colour themselves with the dominant colours in the environment.

9- The leaf insect looks like the plant leave exactly.

10- The stick insect looks like the branches of plants.

11- Chameleon colors itself with the dominant colors of the environment.

12- Camel has a plentiful number of lacrimal glands and two raws of long eyelashes.

13- Camel's ear is small and covered with dense hair from inside.

14- The upper lip of the camel's mouth is forked and the enamel is strong.

15- The upper lip of the camel's mouth is forked and the enamel is strong.

16- The presence of hump in the camel's body.

17- Camels are rarely sweated.

18- Some animals undergo hibernation.

19- The thickness of camel's fur differs at different body regions.

20- Elodea plant has a sessile (neckless) leaves.

21- Some desert plant's leave are modified into spines.

22- The leaves of cactus plants are surrounded with a waxy layer.

Q.3: Choose the correct answer:

1- Birds migrate to ................. [digest – reproduce – respire]

2- The are reduced into spines in opuntia plant.