Why does fishes have streamlined body shape? It
helps them by making their movement easy
. Complete answer: A streamlined body provides a smooth surface to the aquatic animal’s body which reduces resistance in the water by reducing friction and makes movement easy.
Why do fish have this shape answer?
A fish is
shaped for where it lives and how it feeds
. A fish with a torpedo shape can swim quickly through the water. A fish that is flat can easily hide on the bottom of the water.
What is the shape of fish?
Bony fishes show great variety in body shape, but the “typical” fish body shape is
roughly cylindrical and tapering at both ends
. This characteristic fusiform shape is quite energy efficient for swimming.
Why do fish have streamlined body shape?
Fish are streamlined because the streamlined shape
helps them move through the water with the least amount of resistance
. Answer: They have streamlined bodies in order to overcome the friction offered to them by fluids that is air and water.
Why do fish have streamlined body 6?
A body is said to be streamlined if it tapers at both ends. For example, fishes have streamlined bodies
to help them
while swimming in the water, birds have a streamlined body to help them while flying in the air, snakes also have a streamlined body which helps them in their faster movement.
How is the body shape of a fish important?
The fusiform body shape is
rounded or torpedo shaped and streamlined
, which is an ideal shape for fast, continual swimming. Fish with this body shape are well adapted for feeding and survival in open water because the fusiform shape creates minimal drag as the fish swims through the water.
What kind of body does a fish have answer?
The body is often
fusiform
, a streamlined body plan often found in fast-moving fish. They may also be filiform (eel-shaped) or vermiform (worm-shaped). Fish are often either compressed (laterally thin) or depressed (dorso-ventrally flat).
What are 3 characteristics of bony fish?
Bony fishes share several distinguishing features:
a skeleton of bone, scales, paired fins, one pair of gill openings, jaws, and paired nostrils
.
What is fish movement?
Fish
swim by flexing their bodies and tail back and forth
. Fish stretch or expand their muscles on one side of their body, while relaxing the muscles on the other side. This motion moves them forward through the water. Fish use their back fin, called the caudal fin, to help push them through the water.
What are the main features of a fish?
Unlike mammals, fish are cold-blooded (ectothermic). This means that they do not maintain a constant internal body temperature; instead, their temperature is greatly influenced by their environment. True fish
have a backbone and fins
. Most also breathe with gills and have scales that cover their bodies.
What would happen if fish do not have streamlined body?
(i) The streamlined body shape (boat shape) allows the fish to move easily in water. (ii)
Fishes cannot survive outside water
because fishes have gills which help them to use the oxygen dissolved in water. Gills are unable to absorb atmospheric oxygen, due to which the fish will die when removed out of water.
What animal has a streamlined body shape?
Complete Answer:
– Three animals that have streamlined bodies are
fishes, birds and snakes
. Presence of this kind of body shape is advantageous for their living. – For fishes streamlined bodies help them swim in water with the least possible resistance.
What is respiratory organ of fish?
Fish gills
are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers (operculum) on both sides of the pharynx (throat). Gills are tissues that are like short threads, protein structures called filaments.
How do streamlined bodies help water animals Class 6?
Streamlined bodies help
reduce water resistance and friction between the water and the organism
,allowing it to swim faster to escape from its predator or to catch its prey.
Why do fishes have gills?
Like us, fish also
need to take in oxygen and expel carbon dioxide in order
to survive. But instead of lungs, they use gills. … As the fish opens its mouth, water runs over the gills, and blood in the capillaries picks up oxygen that’s dissolved in the water.
What makes fish swim fast?
A fish swims by
moving its tail (caudal fin) side to side
. While each motion provides thrust and lift, it also creates drag when the fin is angled to the side of the body as a stroke is completed. It takes more than a fin to be fast. … More tail area gives more thrust, so fast fish have longer lobes on their fins.
