Chapter 1 – (e) Locomotion As A Type Of Response In Animals | Life Science Solution Class 10

1. Cilia 
2. Pseudopodia 
3. Seta 
4. Tentacles 

1. Air filled sac 
2. Water filled sac 
3. Gas filled sac 
4. Vacuum sac.

Question

1. When the body remains stationary but its parts or organs change their position then it is called ____.
2. When the entire body moves from one place to another, it is called ____.
3. The locomotion of Amoeba is called ____ movement.
4. The locomotory Organs of ____ are muscles, fins, and swim bladder.
5. The V-shaped muscle of fish is called ____.
6. ____ movements are the accessible types of movements induced by some external stimuli.

Answer

1. Movements
2. Locomotion
3. Pseudopodial movement
4. Fish
5. Myotome
6. Tactic movements

Short Answer (SA) type questions

Question 1

What is locomotion ?

Answer

Locomotion refers to the ability of an organism to move from one place to another under its own power. It involves the use of various structures and mechanisms, such as muscles, bones, and joints, to produce movement.

Question 2

Mention the aims of locomotion. 

Answer

Mention the aims of locomotion are

• To enable movement from one place to another
• To locate food, mates, or a suitable environment
• To avoid predators or danger

Question 3

Name the locomotory organs of the following animals-(i) Amoeba, (ii) Fish, (iii) Bird.

Answer

(i) Amoeba – pseudopodia

(ii) Fish – muscles, fins, and swim bladder

(iii) Bird – wings and legs

Question 4

Name the locomotory organs and their function in the fish.

Answer

The locomotory organs of fish are muscles, fins, and swim bladder.

The functions of these organs are as follows:

• Muscles: They provide the force for swimming and help in controlling the movement of the fish.
• Fins: They provide stability and balance to the fish while swimming and help in changing the direction of the fish.
• Swim bladder: It is a gas-filled organ that helps the fish to control its buoyancy and maintain its position in the water column.

Question 5

What do you mean by bipedal locomotion?

Answer

Question 6

Write the names of the locomotory organs of Amoeba and paramecium.

Answer

The locomotory organ of Amoeba is pseudopodia and the locomotory organ of Paramecium is cilia.

Question 7

What are the locomotory organs of Amoeba, paramecium and Euglena?

Answer

Amoeba and Paramecium use cilia and flagella respectively for locomotion. Euglena, on the other hand, uses a flagellum that helps it move through water.

Question 8

What are the different types of fins in Ruhu fish ? 

Answer

Rohu fish has several types of fins which include:

1. Caudal fin (tail fin)
2. Dorsal fin (back fin)
3. Anal fin (ventral fin)
4. Pelvic fin (abdominal fin)
5. Pectoral fin (side fin)

Question 9

What is the role of swim bladder in fish?

Answer

The swim bladder in fish has two main roles:

1. Helps the fish control its buoyancy by adjusting the amount of gas inside it.
2. Enables the fish to save energy by regulating its position in the water column without having to constantly swim.

Question 10

What are the organs involved in bipedal locomotion?

Answer

In bipedal locomotion, the organs involved are the legs, pelvis, spine, and feet. The muscles of the legs play a major role in moving the body forward, while the pelvis and spine provide stability and balance. The feet provide support and balance and also help in propelling the body forward during walking or running.

Question 11

Mention the role of different types of fins in the locomotion of fishes.

Answer

Different types of fins in fishes play various roles in their locomotion. Here are some of the major roles of different fins:

1. Caudal fin (tail fin): The main role of the caudal fin is to provide propulsion to the fish. It is the primary source of forward movement in most fishes.
2. Dorsal fin: The dorsal fin helps the fish to maintain its balance and stability while swimming. It also helps in changing direction and in sudden bursts of speed.
3. Anal fin: The anal fin also helps in stability and balance while swimming. It also assists in braking and in making tight turns.
4. Pectoral fin: The pectoral fin is responsible for steering and turning in fish. It also helps in maintaining balance and in braking.
5. Pelvic fin: The pelvic fin also helps in steering and turning, as well as in braking and in maintaining balance.

Long Answer (LA) type questions

Question 1

(a) What do you mean by movement and locomotion? (b) Mention the purpose of locomotion. 

Answer

(a) Movement refers to any change in position, posture or place of an organism or its body parts. Locomotion refers to the self-propelled movement of an organism from one place to another.

(b) The purpose of locomotion is:

1. To search for food and water.
2. To escape from danger or predators.
3. To find shelter or a suitable environment.
4. To mate and reproduce.
5. To migrate to other regions for better living conditions.

Question 2

(a) What do you mean by locomotory organs of animals? (b) Name the locomotory organs of the following animals-Amoeba, Paramaecium, Cockroach, and Man. 

Answer

(a) Locomotory organs are specialized structures that help in the movement of an animal.

(b) locomotory organs

• Amoeba: Pseudopodia
• Paramecium: Cilia
• Cockroach: Six legs
• Man: Two legs

Question 3

Describe in brief the locomotion in amoeba.

Answer

Amoeba, a unicellular organism, moves by a process called pseudopodia movement. It extends its pseudopodia in the direction of movement, which adheres to the substrate and pulls the body forward. Once the pseudopodia stick to the surface, the posterior part of the cell is drawn forward towards it. The anterior part is then dragged along due to the fluidity of the protoplasm. This type of movement is also called streaming movement, as the protoplasm flows in the direction of pseudopodia movement.

Drawing based questions (DBQ)

Question 1

Draw the movement of the Amoeba with arrows indicating the direction of movement. 

Answer

Question 2

Draw a neat diagram and label the different fins in fish. 

Answer