Unit (3)

Living organismsdiversity and principles of their classification.

I. Choose the correct answers:

  1. ……… are considered from short weeds
  1. Camphor and palm
  2. Clover and gargeer
  3. Banana and clover
  4. Camphor and banana
  1. …….. is one of the plants that cannot be distinguished into roots, stems and leaves.
  1. Algae
  2. Adiantum
  3. Maize
  4. bean
  1. ……… is an example of plants that reproduce by spores.
  1. Wheatb. Vougheirc. Beand. Pine
  1. Cycas plant belongs to ……..
  1. Angiosperms
  2. Brown algae
  3. Gymnosperms
  4. Ferns
  1. …….. are considered from monocotyledon plants.
  1. Bean and pea
  2. Camphor and clover
  3. Maize and wheat
  4. Clover and gargeer
  1. Dicotyledon plants belong to ……
  1. Angiosperms b. Ferns c. Gymnosperms d. Red algae
  1. ……. belongs to the animals that have no body support
  1. Musselb. Hedgehogc. Octopus d. Snake
  1. Arthropods are classified into all the following divisions except…..
  1. Myriapods b. arachnidc. edentates d. insects
  1. Scorpions belong to ……….
  1. Insects b. arachnids c. myriapods d. mammals
  1. The number of pairs in scorpion legs is……
  1. 3b. 4c. 44d. 100
  1. The front teeth of …….. are extending outwards to capture insects.
  1. Ratb. lionc. hedgehog d. squirrel
  1. Taxonomy is a branch of …….
  1. Biologyb. physics c. chemistry d. geology
  1. …….is the basic classification unit for living organisms.
  1. Speciesb. divisionc. genus d. kingdom
  1. Scolopendra & Julius belong to…………..
  1. Micro-organisms b. arachnids c. insects d. myriapods
  1. …………are considered from teethless mammals
  1. Sloth & squirrel
  2. Armadillo & rat
  3. Armadillo & sloth
  1. In rat, the number of incisors in the lower jaw is……..pair(s)
  1. One b. two c. three d. four

17.…………are considered from the animals that have a body support

  1. Octopus & water snails
  2. Jelly fish & shrimp
  3. Fish & mussel

18.Plants whose seeds are not formed inside a pericarp are……..

  1. Angiosperms
  2. Gymnosperms
  3. Pine & cycas
  4. (b) & (c)

19.A set of similar animals in their shape & can get intermated together to produce fertile individuals is…….

  1. Genus
  2. Taxonomy
  3. Species

20.Scolopendra, bee, & Julius have common characteristics with each other except………..

  1. Rabbit b. scorpion c. fly d. ant

21.…………are classified into monocotyledon & dicotyledon

  1. Gymnosperms b. angiosperms c. flowering plants d. (b) & (c)

22.Reptiles & mammals have………….

  1. Soft bodies b .external support c. internal support d. no support

23.When a zebra mates a donkey, they produce………..

  1. A sterile female b. a zonkey c. a mule d. (a) & (b)

24.Camel's limb ends in a ……..

  1. Thin flat pad
  2. Strong hoof
  3. Thick flat pad
  4. Strong claw

25.Horse's limb ends in a …...

  1. Thin flat pad
  2. Strong hoof
  3. Thick flat pad
  4. Strong claw

26.The adaptation of camel's pad enables it to …….

  1. Walk in hot water
  2. Walk on hot desert sand
  3. Run on a rocky soil
  4. Capture the preys

27.The forelimbs of whales are modified into…….

  1. Wingsb. handsc. legsd. paddles

28.The bones of forelimbs and fingers are elongated in the…..

  1. Sea lionb. batsc. monkeys

29.………. Are from the predatory plants

  1. Dieonaea, bean and halophila
  2. Drosera, bean and dieonaea
  3. Dieonaea, drosera and halophila
  4. Halophila, maize and dieonaea.

30. In winter, when temperature is decreased, some reptiles undergo ...

a. Hibernation b. playing c. feeding d. aestivation

31. From the animals that aestivate in summer is …….

  1. Quail b. jerboac. rabbitd. rat

II. Give reasons:

  1. Some plants pounce and digest insects.
  2. Some birds migrate in winter.
  3. When a Zebra mates a donkey, they can't produce fertile individual.
  4. The front teeth of Hedgehog are extending outwards.
  5. Some animals hibernate in winter.

III. Write the scientific term:

1. The ability of some living organisms to simulate the dominant environmental conditions.

2. A set of similar animals in their shape and can get intermated together to produce fertile individuals.

3. It's a modification of living organisms behavior, structure or biological function to become suitable with environment which it lives in.

4. The branch of biology that searches for similarities and differences among living organisms.

IV. Give an example for each of the following:

1-Camouflage in insects.

2-An organism that can't be seen by naked eye.

3-Aestivation in rodents.

4-A plant produces seeds in cones.

5-Insectivorous plant

6-An edentate animal.

V. Compare between:

1-Rabbit and Squirrel.

2-Bean plant and maize plant.

3-Insects and arachnids.

4-Aestivation and Hibernation.

VI. Classify the following organisms:

1-Octopus.

2-Paramecium.

3-Pea plant.

4-Scorpion.

5-Squirrel.

6-Cockroach.

Model answer

Question 1 :

1-b 11-c 21-d

2-a 12-a 22-c

3-b 13-a 23-d

4-c 14-d 24-c

5-c 15-c 25-b

6-a 16-a 26-b

7-c 17-c 27-d

8-c 18-d 28-c

9-b 19-c 29-c

10-b 20-a 30-a

31-b

Question 2

1-Because they can’t absorb nitrogen substance from the soil.

2-To search for warmer and more lighted area for reproduction.

3-Because they are different species.

4-To capture insects .

5-To overcome the decreasing in temperature.

Question 3

1-Camouflage

2-Species

3-Adaptation

4-Taxonomy

Question 4

1-Stick insect

2-Euglena

3-Jerboa

4-Pine

5-Dieonea

6-Sloth

Question 5

Check the sheet

Question 6

1-Soft body

2-Micro organism

3-Angiosperm ( dicotyledon)

4- Arthropods ( arachnids )

5-Rodents

6-Arthropods ( insects )

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