Module 4 Chapter 31 Multiple choice questions 31.7

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. Refer to the figure.

The body of the snake is wavy. The direction of movement is towards the right. The outward force exerted by the snake's body is in the northwest direction for the rise of the wave. And in the southwest direction for the fall of the wave.

The open arrow shows the direction in which the snake is moving, and the solid arrows show points of contact with the ground, against which the snake is pushing. What type of movement is this?

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. Read the following description of movement in a species of snake: "The snake throws its head forwards. This movement is then followed by the rest of the snake's body. This movement is achieved by undulating both vertically and laterally. When in contact with the ground the snake's body is static rather than sliding." Which type of movement is this description depicting?

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