Match the following (i) Wings a. make the body light (ii) Hollow bones b. is when wings move upwards (iii) Upstroke c. help the birds to fly (iv) Tail d. help move the wings (v) Strong muscles e. helps change direction

Wings help the birds to fly high in the sky. Hollow bones make the body of a bird light so that they can make effortless flight. Birds like ostrich cannot fly because their body is too large and heavy for them to make a flight. Upstroke movement is when the wings move upwards and backwards. Wings get folded as they go backwards. Tail helps a bird to change its direction in course of flight. They help a bird make or maintain body balance while perching. Strong muscles are present in flight muscles of birds which help them flap their wings and make strokes in air. (i) Wings a. help the birds to fly (ii) Hollow bones b. make the body light (iii) Upstroke c. is when wings move upwards (iv) Tail d. helps change direction (v) Strong muscles e. help move the wings

When a bird has to fly, it flaps its wings both in upward and downward directions. The upward and backward movement of wings is called upstroke. The downward and forward flapping of the wings is called the downstroke. Downwards and forwards orientation of wing is more spread in area in comparison to upwards and backwards. When wing go backwards, it gets partially folded. Therefore when the bird has to create more lift it brings its wing more forwards.

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EXPANDED Universal Science 3>Animal Life>Chapter 4 - Birds>ASSESSMENT ZONE

Natasha Mehta Solutions for Exercise 3: ASSESSMENT ZONE

Author:Natasha Mehta

Natasha Mehta Science Solutions for Exercise - Natasha Mehta Solutions for Exercise 3: ASSESSMENT ZONE

Attempt the free practice questions from Exercise 3: ASSESSMENT ZONE with hints and solutions to strengthen your understanding. EXPANDED Universal Science 3 solutions are prepared by Experienced Embibe Experts.

Questions from Natasha Mehta Solutions for Exercise 3: ASSESSMENT ZONE with Hints & Solutions

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EXPANDED Universal Science 3>Chapter 4 - Birds>ASSESSMENT ZONE>Q E

Match the following

(i) Wings	a. make the body light
(ii) Hollow bones	b. is when wings move upwards
(iii) Upstroke	c. help the birds to fly
(iv) Tail	d. help move the wings
(v) Strong muscles	e. helps change direction