Why dolphins and whales do not have gills?

Why dolphins and whales do not have gills?
by

1 Answer

Answer :

They are not fish. They are mammals and must come up to the surface to breath air using internal lungs (as all mammals do).
by

Related questions

Assertion :- The aquatic mammals like Dolphins whales etc. do not contain gill slits. Reason : Their adaptation to aquatic life secondary.

Description : Assertion :- The aquatic mammals like Dolphins whales etc. do not contain gill slits. Reason : Their adaptation to aquatic life secondary.

Last Answer : Assertion :- The aquatic mammals like Dolphins whales etc. do not contain gill slits. Reason : Their ... . D. If both Assertion & Reason are false.

Sea turtles, dolphins, and whales all live in the ocean. How do the respiratory systems of these three types of animals limit their behavior?

Description : Sea turtles, dolphins, and whales all live in the ocean. How do the respiratory systems of these three types of animals limit their behavior?

Last Answer : They must swim to the surface to breathe because their lungs require air and not water.

What is it called when bats, whales, and dolphins emit sound waves and interpret the reflect sound waves as a means to locate objects?

Description : What is it called when bats, whales, and dolphins emit sound waves and interpret the reflect sound waves as a means to locate objects?

Last Answer : Sonar is a system that locates objects by transmitting sound waves and detecting the waves when they are reflected off of objects. Bats and many other animals, such as whales and dolphins, use natural sonar to navigate and capture

Which of the following animals are dolphins not closely related to? (a) Whales (b) Porpoises (c) Dugong (d) All of the above

Description : Which of the following animals are dolphins not closely related to? (a) Whales (b) Porpoises (c) Dugong (d) All of the above

Last Answer : Ans:(b)

Which among these is the correct combination of aquatic mammals? (a) Dolphins, Seals, Trygon (b) Whales, Dolphins, Seals (c) Trygon, Whales, Seals (d) Seals, Dolphins, Sharks

Description : Which among these is the correct combination of aquatic mammals? (a) Dolphins, Seals, Trygon (b) Whales, Dolphins, Seals (c) Trygon, Whales, Seals (d) Seals, Dolphins, Sharks

Last Answer : (b) Whales, Dolphins, Seal

Which among these is the correct combination of aquatic mammals ? (1) Dolphins, Seals, Trygon (2) Whales, Dolphins, Seals (3) Trygon, Whales, Seals (4) Seals, Dolphins, Sharks

Description : Which among these is the correct combination of aquatic mammals ? (1) Dolphins, Seals, Trygon (2) Whales, Dolphins, Seals (3) Trygon, Whales, Seals (4) Seals, Dolphins, Sharks

Last Answer : (2) Whales, Dolphins, Seals

Will you live like a fish but without the gills?

Description : Will you live like a fish but without the gills?

Last Answer : I would love to do that. Where do I sign up?

Where can I find a picture of the old kind of BMW z3 that has the big ribs/or gills on the sides?

Description : Where can I find a picture of the old kind of BMW z3 that has the big ribs/or gills on the sides?

Last Answer : http://www.carolinamcevents.com/articles/bmwz3.pdf-

What are gills? -Biology

Description : What are gills? -Biology

Last Answer : answer:

None Animals The gills Or Lungs With Respiration Done By ?

Last Answer : Oysters The gills Or Lungs With Respiration Done By

Gills slits in chondricthyes are

Description : Gills slits in chondricthyes are

Last Answer : Gills slits in chondricthyes are A. Uncovered B. Coverd by operculum C. Absent D. Only sometimes covered

How many animals in the given list have gills for respiration ? Earthworm , Frog, Fish, Insects, Reptiles, Aquatic arthropods, Flatworm, Molluscs, Bir

Description : How many animals in the given list have gills for respiration ? Earthworm , Frog, Fish, Insects, Reptiles, Aquatic arthropods, Flatworm, Molluscs, Bir

Last Answer : How many animals in the given list have gills for respiration ? Earthworm , Frog, Fish, Insects, Reptiles, ... A. Six B. Four C. Three D. Five

Presence of gills in the tadpole of frog indicates that

Description : Presence of gills in the tadpole of frog indicates that

Last Answer : Presence of gills in the tadpole of frog indicates that A. Fishes evolved from frog like ... ancsetors D. Fishes were amphibious in the past

How many gills do blue tang have?

Description : How many gills do blue tang have?

Last Answer : Need answer

How does a sea animal like dolphin survive in water without gills please give answer same Long?

Description : How does a sea animal like dolphin survive in water without gills please give answer same Long?

Last Answer : The dolphins (whales and porpoises, etc) are aquatic mammals. As mammals they need to come to the surface and breath air into and out of their internal lungs. They can only stay underwater for a ... water over their gills, extracting oxygen, and they have no need to come to the surface to breath.

What is the function of the gills in a starfish?

Description : What is the function of the gills in a starfish?

Last Answer : Need answer

Fish respire through their (a) nose (b) lungs (c) gills (d) fins

Description : Fish respire through their (a) nose (b) lungs (c) gills (d) fins

Last Answer : Ans:(c)

What is the difference between gills and lungs?

Description : What is the difference between gills and lungs?

Last Answer : Gills and lungs are richly vascularized organs that serve for gas exchange between the environment and the circulatory system. The lungs differentiate from gills in that they are saclike ... specialized in gas exchange in aquatic environment. Breathing Process Review - Image Diversity: lungs

The newly hatched tadpo e breaths through its – (1) Lung (2) External gills (3) Internal gills (4) All of the above

Description : The newly hatched tadpo e breaths through its – (1) Lung (2) External gills (3) Internal gills (4) All of the above

Last Answer : (2) External gills Explanation: A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.

How do most insects respire? (1) Through skin (2) Through gills (3) By tracheal system (4) By lungs

Description : How do most insects respire? (1) Through skin (2) Through gills (3) By tracheal system (4) By lungs

Last Answer : (3) By tracheal system Explanation: Insects do not have lungs to do respiration. In insects respiration takes place through tracheae. Tracheae are tube like structures that open on the sides of their body through tiny holes called spiracles.

An invertebrate does not have – (1) Notochord (2) Body cavity (3) Haernocoel (4) Gills

Description : An invertebrate does not have – (1) Notochord (2) Body cavity (3) Haernocoel (4) Gills

Last Answer : (1) Notochord Explanation: An invertebrate does not have back bone and cell wall

Through which organ does a fish respire? A. Nose B. Lungs C. Gills (Answer) D. Fins

Description : Through which organ does a fish respire? A. Nose B. Lungs C. Gills (Answer) D. Fins

Last Answer : C. Gills (Answer)

Which one of the following are analogous structures? (a) Wings of bat and wings of pigeon (b) Gills of prawn and lungs of man (c) Thorns of Bougainvillea and tendrils of Cucurbita (d) Flippers of dolphin and legs of horse

Description : Which one of the following are analogous structures? (a) Wings of bat and wings of pigeon (b) Gills of prawn and lungs of man (c) Thorns of Bougainvillea and tendrils of Cucurbita (d) Flippers of dolphin and legs of horse

Last Answer : (a) Wings of bat and wings of pigeon

Which one of the following statements is incorrect? (a) The principle of countercurrent flow facilitates efficient respiration in gills of fishes. (b) The residual air in lungs slightly decreases the efficiency of respiration in mammals. (c) The presence of non-respiratory air sacs, increases the efficiency of respiration in birds. (d) In insects, circulating body fluids serve to distribute oxygen to tissues.

Description : Which one of the following statements is incorrect? (a) The principle of countercurrent flow facilitates efficient respiration in gills of fishes. (b) The residual air in lungs slightly decreases the ... in birds. (d) In insects, circulating body fluids serve to distribute oxygen to tissues.

Last Answer : (b) The residual air in lungs slightly decreases the efficiency of respiration in mammals.

A chordate character is (a) gills (b) spiracles (c) post-anal tail (d) chitinous exoskeleton

Description : A chordate character is (a) gills (b) spiracles (c) post-anal tail (d) chitinous exoskeleton

Last Answer : (c) post-anal tail

The nephridia in earthworm are analogous to (a) nematoblasts of Hydra (b) flame cells of Planaria (c) gills of prawn (d) trachea of insects.

Description : The nephridia in earthworm are analogous to (a) nematoblasts of Hydra (b) flame cells of Planaria (c) gills of prawn (d) trachea of insects.

Last Answer : (b) flame cells of Planaria

Presence of gills in the tadpole of frog indicates that (a) fish were amphibious in the past (b) fish evolved from frog-like ancestors (c) frogs will have gills in future (d) frogs evolved from gilled ancestors.

Description : Presence of gills in the tadpole of frog indicates that (a) fish were amphibious in the past (b) fish evolved from frog-like ancestors (c) frogs will have gills in future (d) frogs evolved from gilled ancestors.

Last Answer : (d) frogs evolved from gilled ancestors.

Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal). (b) All bony fishes have four pairs of gills and an operculum on each side. (c) All sponges are marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.

Description : Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded ( ... marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.

Last Answer : (b) All bony fishes have four pairs of gills and an operculum on each side

Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal). (b) All bony fishes have four pairs of gills and an operculum on each side. (c) All sponges are marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.

Description : Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded ( ... marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.

Last Answer : (b) All bony fishes have four pairs of gills and an operculum on each side.

Which of the following represents the correct combination without any exception ? Characteristics Class (a) Sucking and circular mouth; jaws absent, integument without scales; paired appendages. Cyclostomata (b) Body covered with feathers; skin moist and glandular, fore- limbs form wings; (c) Mammary gland; hair on body; pinnae; two pairs of limbs. Mammalia (d) Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord. Chondrichthyeslungs with air sacs. Aves

Description : Which of the following represents the correct combination without any exception ? Characteristics Class (a) Sucking and circular mouth; jaws absent, integument without scales; paired ... Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord. Chondrichthyes

Last Answer : (c) Mammary gland; hair on body; pinnae; two pairs of limbs. Mammalia

Choose the correct statement. (a) All mammals are viviparous. (b) All cyclostomes do not possess jaws and paired fins. (c) All reptiles have a three-chambered heart. (d) All pisces have gills covered by an operculum

Description : Choose the correct statement. (a) All mammals are viviparous. (b) All cyclostomes do not possess jaws and paired fins. (c) All reptiles have a three-chambered heart. (d) All pisces have gills covered by an operculum

Last Answer : (b) All cyclostomes do not possess jaws and paired fins.

Which is false regarding freshwater fish? a) their blood is hypertonic to their environment b) they often actively take up salt c) they excrete urine hypotonic to the blood d) their gills actively excrete salts

Description : Which is false regarding freshwater fish? a) their blood is hypertonic to their environment b) they often actively take up salt c) they excrete urine hypotonic to the blood d) their gills actively excrete salts

Last Answer : ANSWER: D -- THEIR GILLS ACTIVELY EXCRETE SALTS

Oxygen enters the body of a grasshopper through: a) gills b) spinnerets c) spiracles d) book lungs

Description : Oxygen enters the body of a grasshopper through: a) gills b) spinnerets c) spiracles d) book lungs

Last Answer : ANSWER: C -- SPIRACLES 

The newly hatched tadpole breaths through its (1) Lung (2) External gills (3) Internal gills (4) All of the above

Description : The newly hatched tadpole breaths through its (1) Lung (2) External gills (3) Internal gills (4) All of the above

Last Answer : External gills

An invertebrate does not have (1) Notochord (2) Body cavity (3) Haemocoel (4) Gills

Description : An invertebrate does not have (1) Notochord (2) Body cavity (3) Haemocoel (4) Gills

Last Answer : Notochord

Dolphins or pandas?

Description : Dolphins or pandas?

Last Answer : Panda’s what?

Could Dolphins teach us how to communicate with Aliens in the future?

Description : Could Dolphins teach us how to communicate with Aliens in the future?

Last Answer : I don’t think the point of the comparison is the sentience of dolphins so much as it is a study in how to communicate with a species with no common frame of reference.

Are you aware of the annual slaughter of the Calderon dolphins in Denmark?

Description : Are you aware of the annual slaughter of the Calderon dolphins in Denmark?

Last Answer : rooeytoo Do you know where the tradition began and if it kept it's original methods? I'm interested in the origins of it. Perhaps I will look some more online. Besides the last sentence I didn't see much to ... they catch or why they do it? It did say that they can't eat the fish because of toxins.

Are there such things as cold water dolphins?

Description : Are there such things as cold water dolphins?

Last Answer : Yes, there is the hourglass dolphin. Now, it also depends on your definition of “cold”. The hourglass dolphin lives in Antarctic and sub-Antarctic waters. However, many humans would consider the Atlantic waters off the northeast coast to be cold, and there are dolphins there, as well.

Can you explain to me how Dolphins create those underwater rings, with which they play?

Description : Can you explain to me how Dolphins create those underwater rings, with which they play?

Last Answer : All you ever wanted to know about bubble rings

pictures of plants from island of the blue dolphins

Description : pictures of plants from island of the blue dolphins

Last Answer : Need Answer

What did the two dolphins say after not seeing each other for so long? -Riddles

Description : What did the two dolphins say after not seeing each other for so long? -Riddles

Last Answer : Long time no sea.

Why do dolphins swim in salt water? -Riddles

Description : Why do dolphins swim in salt water? -Riddles

Last Answer : Pepper makes them sneeze.

How old is Ulape from Island from the blue dolphins?

Description : How old is Ulape from Island from the blue dolphins?

Last Answer : 12-year

Want to know the physical constitution of Irrawaddy dolphins ?

Description : Want to know the physical constitution of Irrawaddy dolphins ?

Last Answer : The body color of this dolphin is limited to fairly gray to slate blue , the lower part is pale in color and there is no different pattern that causes discrepancy. In the middle of the ... posterior side. Humpback dolphins , Sousa chinensis are relatively large , surface fins and beak and large.

Want to know more about Irrawaddy Dolphins ?

Description : Want to know more about Irrawaddy Dolphins ?

Last Answer : The Irrawaddy dolphin ( Orcaella brevirostris) is a salt-tolerant species of ocean dolphin. They are found isolated at the confluence of several rivers along the coast and the Bay of Bengal, and in Southeast Asia. Irrawaddy Dolphin 18 Painting Comparison with the average human size

What are baby dolphins called?

Description : What are baby dolphins called?

Last Answer : They are called a calf or a pup. Their size is 39-53 inches. They can start to eat fish about 2 month old. They are stay with their mother about 3-6 years.

Dolphins are classified as what kind of animals?

Description : Dolphins are classified as what kind of animals?

Last Answer : Answer: Mammals

Being all mammals, whale, dolphins, bat, monkey and horse have some common character but they also show conspicuous differences. This is due to phenom

Description : Being all mammals, whale, dolphins, bat, monkey and horse have some common character but they also show conspicuous differences. This is due to phenom

Last Answer : Being all mammals, whale, dolphins, bat, monkey and horse have some common character but they also ... B. Genetic drift C. Divergence D. Convergence

How many words are in island of the blue dolphins?

Description : How many words are in island of the blue dolphins?

Last Answer : According to an internet search, Island of the Blue Dolphins has40,531 words.