Page 123 - Science Class 06

B. Fill in the blanks.
1. ___________ also have more complex and specialised organ systems when compared to
invertebrates.
2. Our skull consists of an___________ and a lower jaw.

3. The head bears a pair of eyes, a pair of nostrils and the joints are modified into
___________.
4. The body of a cockroach is divided into ___________ .
5. Cockroach is a ___________ brown coloured insect about 5-6 cm in length.
C. Match the following columns.

Column I Column II
1. Vertebrate a. spinal cord
2. Invertebrate b. free movement of body part
3. Backbone c. visceral mass

4. Synovial joint d. insects
5. Snail e. man
D. Write True or False.

1. The main func on of the skeletal system is to give a shape to body and to
support the body.

2. There are four pairs of false ribs in our body.
3. The movement of an organism from one place to another is known as locomo on.
4. All the animals whether unicellular or mul cellular, perform various life
processes to live.
5. Veins collect impure blood from different parts of the body and rush
back to the heart.
E. Very short answer ques ons.

1. Write one line for vertebrate organisms.
2. Name any complex organ system.
3. Define locomo on.

4. What is the func on of ball-and-socket joint?
5. Write important body parts of a snail.
6. Write the organs involved in respira on in human body.
F. Short answer ques ons.

1. Differen ate between exoskeleton and endoskeleton.
2. What is skull? Write its func ons.
3. Differen ate between hinge joint and fixed joint.
4. Write the func ons of hinge joint.

5. Write the body structure of a fish that helps it to live in water.
6. Describe the construc on of the body of a cockroach.
7. Write the process of diges on and the organs involved in it.

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