While swimming, it provides the least amount of resistance, facilitating easy movement as well as increasing speed. Seas and oceans around coastlines; one species lives in a freshwater lake. Streamlining reduces the surface area of the moving object. This shape helps them move inside water. Pectoral fins and flippers most likely derived from the arms of land animals. Adaptation: Fur turns white during the cold snowy winter months Function: _____ _____ Animal: _____ Adaptation: Produces very little sweat and urine Give the function of each adaptation and name the animal. Over your head circle, make a bell shape (this will be the wolf's cheeks), and add in lines for the legs. Movement b. Aquatic animals have a streamlined body (the shape of the body that is tapering at both ends) to reduce friction while swimming. These new data expand our understanding of convergent evolution among marine reptiles, and provide insights into their evolution's tempo and mode. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively . - For fishes streamlined bodies help them swim in water with the least possible resistance. Skin. Freshwater Animals. They have streamlined bodies which help them to move easily in water. ' whale ' ( / sɪˈteɪʃə / ), from Ancient Greek: κῆτος, romanized : kētos, lit. Main adaptations for flying in birds are given as follows: Body is streamlined. A needlefish has a perfectly streamlined body, which allows the fish to achieve high swimming velocities. Dorsal fins provide stability. The evolution of echolocation in whales and bats. Body shape in each of these organisms would be considered: IV. They grow to an average of 15 feet in length, though specimens exceeding 20 feet and weighing . Cartilage: They are semi-hard structures that are elastic tissue and present in an animal body. 1) streamlined body shape. Oceans and seas: These are large water bodies that have saline (salty water). We hope the given CBSE Class 6 Science Notes Chapter 8 Body Movements Pdf free download will help you. Transportation c. Conduction d. locomotion. Why? This shape enables the animals to fly faster. 4.5 (14) (42) (12) Choose An Option That Best Describes Your Problem. Answer: Birds can fly because their bodies are well-suited for flying. Streamlined body helps bird to fly easily in air by reducing resistance by air and in case of aquatic animals, streamlined body helps to swim easily through water by reducing resistance by water. Streamline is defined as a shape that is wider at the centre and narrows down towards the periphery. These animals have gills which help them to use oxygen dissolved in water. Animals with bilateral symmetry have a "head" and "tail" (anterior vs. posterior), front and back (dorsal vs. ventral), and right and left sides (Figure 27.8). - shigeta Jun 19, 2012 at 17:26 Octopus takes streamlined shape when it moves in water; Animals like dolphin and whale do not have gills to breathe in water. A swimming Chinstrap penguin measuring more than seven inches wide, for instance, slices through the water . Bottlenose dolphins have a few, sparse hair follicles around the tip of their rostrum, though any individual hairs that are present fall out before or shortly after birth. Bilateral symmetry involves the division of the animal through a midsagittal plane, resulting in two superficially mirror images, right and left halves, such as those of a butterfly (Figure 27.7d), crab, or human body. Snakes have streamlined body to help them move forward. Aquatic organisms have a streamlined body shape. Functional. This makes a jerk and pushes the body forward. Compsognathus' pointed head was only three inches long. Drag is a force that slows down motion; friction drag is a special kind of drag. A streamlined body is a shape that lowers the friction drag between a fluid, like air and water, and an object moving through that fluid. Was this answer helpful? Question 13. 3) very efficient gas exchange. River otters typically have slender, streamlined, serpentine bodies. Among the given options, the shark is a fish. TEARDROPS: The bodies of birds of all sizes share the same streamlined shape. Aquatic locomotion or swimming is biologically propelled motion through a liquid medium. fish, penguin, dolphin) These animals need to swim fast to catch their prey or swim away from predators to avoid being eaten. Cetacea (from Latin: cetus, lit. speed. 7. This body shape is called streamlined. therefore, the streamlined shapes of these two animals are an example of _____. b. In this way it moves in water. Question 12. Fish has got two chambered heart Examples of objects with streamlined shape 1. fish 2. areoplanes 3. boat 4. crocodiles 5. birds 6. spear 7. whale 8. dolphins 9. They have blowholes located at the upper parts of their heads. . The tail was longer than the head, neck, and body put together. 3) Body of the fish naturally has a streamlined shape. This gives the Inia the ability to turn its head 180 degrees to either side, giving them greater flexibility to catch prey in flooded forest floors, shallow waters, and tributaries (W12). Functions of Animal Adaptations The following shows a list of adaptations found in animals. Compsognathus (also known as the compy) was a small, bipedal, carnivourous dinosaur. Sea animals have streamlined bodies to help them move easily in water. A body shape which is streamlined helps cut against the friction created by the medium around the moving body. Streamlined body shape of dolphins, sharks and (extinct) ichthyosaurs. There are some sea animals, like squids and octopus, which do not have streamlined shape. A cockroach has ----- pair of legs. Fishes have streamlined body so that it can reduce friction in water and thus helping the fishes to move easily. This type of movement is called ____. 2. Answer : D 17. A streamlined shape moves faster through water than other shapes. (E.g. An earthworm has a streamlined body with no antennae or fins or arms or legs! Some sea-animals like squids and octopus do not have streamlined body shape. The fish only lives in water (it is aquatic animal) A streamlined body is the body shape with the pointed ends. Streamlined body, short neck, flippers, no ear flaps . Previous Next. Some sea animals like octopus and squid do not have streamlined shape. I. This same idea works with airplanes! II. A fish cannot live on dry land because it is body shape not adapted to breathe on land. 11. Categories Science March 28, 2022 by Riya Question: This animal has a boat-shaped (Streamlined) body. - Three animals that have streamlined bodies are fishes, birds and snakes. THE drag of a streamline body, such as an airship hull or an aeroplane fuselage, with its axis in the direction of the relative wind, is almost entirely due to skin friction. Reply; Share Report Share. The fish only lives in water (it is aquatic animal) A streamlined body is the body shape with the pointed ends. Aquatic locomotion. The fish and snake both contain gills, the fish contains the gills throughout life and reptiles lose gills in the embryonic stage. Answer this doubt. A streamlined body shape is one that is narrow at both ends, and broad in the middle. A bonito is a group of eight distinctive fish species, including the Atlantic bonito and Pacific bonito, in the mackerel/tuna family. 2) Submarines have streamlined shapes to reduce the friction force exerted by the water. We investigated morphological adaptations to aquatic life within animals that exhibit a structurally simple, elongate body form, i.e., snakes. Simple expressions may be obtained for the volumetric drag coefficient of an ideal body of revolution under laminar unseparated flow conditions together with estimations of a critical value of the Reynolds number. A streamlined body is a shape of body that reduces resistance when moving. Forelimbs are modified into wings and hindlimbs are shifted forward to balance their body weight. This helps to (a) Store food and fats (b) Reduce resistance in the water (c) Reduce the loss of wate . The aquatic animal whose skeleton is made entirely by cartilages is the -----a) whale b) dolphin c) shark d) seahorse. Coloration Sharks Dolphins skeleton made of cartilage skeleton made of bone use gills to get oxygen from the water in which they swim go to the surface and breathe The tail (caudal) fin helps the fish to move forward quickly. Habitat. The skeleton of fish is covered with muscles which make the front part of the body to curve to one side and the tail part swings towards the opposite side. A streamlined body shape is one that is narrow at both ends, and broad in the middle. Strong muscles b) tail and fins c) bones d) streamlined body shape. It has head, body, tail and a wide mouth with a movable lower jaw. The silk producing ability of spiders, silk worms, silk moths and weaver ants. Friction produced by fluids are known as drag.Water produces drag.As fish is an aquatic animal,it should overcome drag.Streamlining is one ofd the better methods that reduces friction.A streamlined body is sharp at the front and rounded at the back.Thus the streamlined body of a fish helps the fish to reduce the drag and to move easily and faster through water. It occurs when the fluid closest to the object sticks to its surface, exerting a force that opposes the object's motion. The name needlefish is given as the elongated mouth resembles a needle. On land other concerns, defense, physical strength and size are at least as important. The hump of this animal has a substance R stored in it. The shape of its body helps it swim through water. \⠀䄀戀漀瘀攀 琀栀攀 爀攀攀昀Ⰰ 伀渀 琀栀攀 爀攀攀昀Ⰰ 愀渀搀 䤀渀 琀栀攀 爀攀攀昀尩 The organisms that l\൩ve in each of these different spaces have different features or adaptations that help them survive and get . Suggest Corrections. Write the names of three animals that have streamlined body. The animal P has long legs and it can drink large amount of water at one go. The bodies of all flying birds are shaped like teardrops. Example 1) Aeroplanes have streamlined shapes to reduce the friction force exerted by the air. This is because it can cut through the water more efficiently than other shapes. A bottlenose dolphin has a sleek, streamlined, fusiform body. Question 12. Flight muscles are present to provide additional strength during the flight. Most land animals don't even move quickly. You have probably noticed that dolphins and sharks both have a streamlined body shape with a triangular fin on the back and two side fins. Answer: No because it prevents functioning of elbow . An earthworm has circular muscles that surround each body segment. Flight feathers, found on the wings and tail, provide loft. A streamlined body shape is one that is narrow at both ends, and broad in the middle. The streamlined body is found in a -----a) snail b) earthworm c) fish d) jellyfish. For example, giant pandas have body parts resembling thumbs, which the animals use to grip bamboo, as biologist Stephen Jay Gould described in Incorporating Nature Magazine in the 1970s. This helps to (a) Store food and fats (b) Reduce resistance in the water (c) Reduce the loss of wate . Wings are a primary characteristic of birds, but they are found on other types of animals too. This shape enables the animals to swim faster. 2 See answers Advertisement Advertisement Brainly User Brainly User Explanation: Birds have streamlined body so as to reduce the air resistance during flying. Streamline is defined as a shape that is wider at the centre and narrows down towards the periphery. Explanation: The 'possess a series of bones' which 'protect their spinal cord'. Pertaining to the function of an organ or part, or to the functions in general. Dear Student, Streamlined body means body which can offer minimum resistance to air and water by its particular type of body shape. e.g., upper part of ear, etc. Only two specimens have been found. Answer 1.8 /5 1 smartbrainz The two sea animals do not have streamlined and bilaterally symmetrical body are starfish and octopus. Found in cool, coastal waters around the world, great whites are the largest predatory fish on Earth. They have compact, streamlined bodies, short wings, and very short tails. Select the sea animal that have gills. Clawless and giant otters have similarly shaped bodies. A fusiform shape is the principle morphology to reduce drag and modify the water flow over the body and appendages. 1. The simplest propulsive systems are composed of cilia and flagella. a. A seal's body is rounded in the middle, and tapered at the end. You can learn more about streamlines here! Sharks Dolphins skeleton made of cartilage skeleton made of bone use gills to get oxygen from the water in which they swim go to the surface and They can have a lifespan of up to 8 years and some species are capable of growing more than 1 meter in length. Fish have slippery scales on their bodies. Categories Science March 28, 2022 by Riya Question: This animal has a boat-shaped (Streamlined) body. The tail (tail fin) helps to maintain balance during swimming. Upvote. 10. Shark. Treamlined bodies often have a teardrop shape. The streamlined shape of the dolphin, seal and other swimming animals is most important for A) overcoming the forces of gravity acting on the animal B) reducing the mass of the animal's body C) maintaining a consistent speed in the dense medium D) reducing drag from the water they must swim through. . The streamlined shape of sea animals is an adaptation for swimming in water. They all have a streamlined shape. Mimicry Dolphins, tuna, penguins, and sharks are all organisms with streamlined bodies that reduce friction and drag. Streamlined body shape . Wings. This is a science lesson focussing on biology. Streamlined bodies are common in many aquatic organisms. The Amazon River Dolphin, or Inia, has an unfused vertebrae in its neck. Area or environment in which an organism usually lives or occurs. This linear body plan should impose different biomechanical constraints than the classical streamlined body shape associated with propulsion by fins, feet, o … The streamlined shape helps the fish to move in water. yet recent ancestors to the porpoise were four-limbed terrestrial mammals. Some animals living in water have streamlined body shapes. Habitat. Drag is a force that slows down motion. The paired shell shape of bivalve mollusks and brachiopods. Macaws are adapted for flying through the trees in the forest, with a streamlined body and tail shape and wings that don't flap deeply. The fish has special organs called "gills" which-help it to absorb oxygen-dissolved in water for breathing. This shape enables the animals to fly faster. 3. Presence of this kind of body shape is advantageous for their living. Dolphins and sharks both have a streamlined body shape with a triangular fin on the back and two side fins. This streamlined shape is an adaptation to living in narrow burrows underground and the need to move easily through the soil. Amazon River Dolphin Adaptations: (Inia geoffrensis) 1. Go to Home » Guides » Science » This animal has a boat-shaped (Streamlined) body. Streamlined: The body shape where body tapers at both ends is called streamlined body, e.g., body of birds and fish. The bill is variable in shape and may be highly ornamented in the breeding season. Answer: The body of fish is streamlined. Although they are very different species, fish and dolphins (mammals) look similar. This helps them in their movement in water which can be either for the search of food or to escape predation. Some animals living in water have streamlined body shapes. The animal Q breathes through the special organ \ ('S'\) What are the most likely habitats of : P and Streamlined body shape Just like there is water resistance . Adaptations for Living Spaces of the Reef : ABOVE the reef: ON the reef: IN the reef: There are three main living spaces found on a coral reef. The streamlined shape of the body enables a fish to move through water with low resistance. 11. 2. The feet are placed far back on the body, webbed, with no hind toe; claws are narrow and the tarsus is laterally compressed. Swimming has evolved a number of times in a range of organisms including arthropods, fish, molluscs, reptiles, birds, and mammals . Body Shape. Solution: Adaptations in aerial animals: Their body is streamlined. Animals and Nature › Seals, sea lions . Similar adaptations occur quite frequently, however, but none of them are due to "repeating evolution". Fusiform. This shape provides little resistance during flight. Such animals stay deeper in the ocean near the sea-bed and catch any prey that moves towards them. 10. Streamline is defined as a shape that is wider at the centre and narrows down towards the periphery. Which animals have streamlined body shape? 2. The streamlining is achieved by specially arranged feathers that reduce the friction that would otherwise act as a drag against the forward-moving body. Smooth body shape. In order to decrease this drag the objects are given a special shape or streamlined shape. Draw lines connecting your body and head shapes together, like this! So it has a boat-shaped body. All otters have very flexible bodies. The tuna's sleek and streamlined torpedo-shaped body makes it one of the fastest fish in the world and a capable predator. In fact, Kooyman says, the penguin has among the most streamlined body shape ever gauged. Contents hide 1 Which animal has a streamlined body shape and why? Fin located on the upper side of fishes and some other vertebrate animals, used for stabilisation and manoeuvrability. . How are the birds adapted for flying? If you tie a scale with your arm, are you able to bend your elbow? Passage - 3 The fish and many other sea animals are adapted to live in sea. The drag component clue to surface pressure is, in general, small and relatively unimportant. However, while they move in water, they make their body streamlined. The body shapes of porpoises and sharks are similar in appearance. You can learn more about streamlines here! . Examples: Fishes have streamlined body so that they have less resistance when swimming in water. Teeth discovered in Portugal may be further fossil remains of the genus. In comparison to other otter species, sea otters are somewhat stockier with larger ribcages. A: A streamlined body is a shape of body that reduces resistance when moving. Range. A fish has a boat-shaped body. Sea animals have gills to help them use oxygen dissolved in . All birds have a light body as the bones are . Dolphin skin is highly specialized and plays an important role in hydrodynamics. Their body shape is highly streamlined: both have fins and a tail. d. Skeleton: The framework of the body which is made up of bones and cartilage is called skeleton. It helps the fish to a. DIRECTIONS: Read the passage(s) given below and answer the questions that follow. So the correct answer is option B. Lorna Roberts/Shutterstock.com #5 Fastest Fish: Bonito. There are two animals P and Q. The appendages (limbs) are modified into fins that facilitate swimming by removing the water according to the body weight. US arranged or organized so as to be simpler or more efficient 3. with no excess, as of fat, decoration, etc. Which of the following is the most abundant tissue in higher animals? Streamlined body lowers the friction drag between a fluid, air or water and an object moving trough that fluid. Soft, fluffy feathers provide warmth. This flexibility allows them to groom almost every inch of their fur. Presence of this kind of body shape is advantageous for their living. Biology. Treamlined bodies often have a teardrop shape. By streamlining the body, marine mammals are able to reduce the resistive drag. - Three animals that have streamlined bodies are fishes, birds and snakes. A measure, the capacity . Why do birds have a streamlined body shape ? Solution Verified by Toppr Correct option is B) Aquatic organisms have a streamlined body shape. It swims with the help of fins. It also has longitudinal muscles that run the length of its body. streamlined in American English (ˈstrimˌlaɪnd ) adjective 1. having a contour designed to offer the least resistance in moving through air, water, etc. Birds have a streamlined body to make their flight easier through air. The advantage of streamlining is much greater for aquatic animals as water has a much greateer influence on viability. Most animals can move from one place to another. When they come in for a landing, they drop their tail and feet downward and use their wings like brakes to slow down before grasping a perch with their feet. Bones have air spaces. 2) dorsal and pectoral (flippers) fins. Streamlined body shape Just like there is water. Go to Home » Guides » Science » This animal has a boat-shaped (Streamlined) body. Male birds also often use their feathers to attract mates. Our study demonstrates that a streamlined body plan and crescent-shaped caudal fin were already well established in Platecarpus, a taxon that preceded Plotosaurus by 20 million years. Its streamlined body shape allowed it to run swiftly. The animal Q has a streamlined body shape. Fish utilize a countercurrent system of gas excxhange where the blood in the gills flow in the opposite direction to the water. Some animals, such as sharks and dolphins, are streamlined so that they have less resistance when swimming in water. Streamlined Sharks is a fun way of learning about how shape affects the speed at which an object travels through water. 'huge fish', sea monster) is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises. Fish has got two chambered heart Examples of objects with streamlined shape 1. fish 2. areoplanes 3. boat 4. crocodiles 5. birds 6. spear 7. whale 8. dolphins 9. - For fishes streamlined bodies help them swim in water with the least possible resistance. Evolution appears to have repeated itself in producing these two animals that are formed alike. 10. Contour feathers help birds to fly effectively and create a streamlined body shape. But when squids and octopus move in sea-water, they make their body shape streamlined. The best swimmers have a streamlined shape that ensures an attached flow pattern and a laminar boundary layer at rather large values of the Reynolds number. the back (dorsal) fin keeps the fish in a straight line as it moves forward. Many presentations still . Solution Verified by Toppr The shape of the body is said to be streamlined, if the body tapers at both the ends. Swim. 16. Streamlined, torpedo-shaped body. However, the two animals also have many differences. One of their defining traits is . Auks are well-adapted to underwater swimming. Aquatic organisms have a streamlined body shape. Answer: (i) Fish (ii) Birds (iii) Snake. III. Whereas fishes have streamlined body so as to reduce friction in water and help them to move faster. It moves by using its fins and tails. Illustration by Larry Barth. Streamlined shapes can be approximated by measuring the Fineness Ratio (body length/maximum body width), which is optimal between 3 and 7 to reduce drag. However, the two animals also have many differences. No single advantage drives the evolution of body type. Connect Your Shapes. 11. 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Long legs and it can drink large amount of resistance, facilitating easy movement well... Most likely derived from the arms of land animals don & # x27 ; even. Slows down motion ; friction drag is a special kind of body shape where body tapers at both ends to!: no because it can drink large amount of resistance, facilitating easy movement as well as increasing speed the! Where the blood in the mackerel/tuna family feet and weighing all organisms with bodies. //Www.Sciencedirect.Com/Science/Article/Pii/B9780128043271002508 '' > the Open Door Web Site: movement in water that they have less resistance when swimming water. Wide, for instance, slices through the soil they have blowholes located at the upper of... Oceans around coastlines ; one species lives in a -- -- - pair of.. Of animals too to living in narrow burrows underground and the need to move easily through water...: fishes have streamlined body is the body shape efficient 3. with no excess, of... Concerns, defense, physical strength and size are at least as important sea animals are an of. ) Choose an option that Best Describes your Problem against the forward-moving body ( 30 Jun ) SlideShare. And pectoral ( flippers ) fins each adaptation and Name the animal as water a.
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