A marine cartilaginous fish that can produce electric current is

A marine cartilaginous fish that can produce electric current is
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A marine cartilaginous fish that can produce electric current is A. Pristis B. Torpedo C. Trygon D. Scoliodon
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A marine cartilaginous fish that can produce electric current is (a) Pristis (b) Torpedo (c) Trygon (d) Scoliodon.

Description : A marine cartilaginous fish that can produce electric current is (a) Pristis (b) Torpedo (c) Trygon (d) Scoliodon.

Last Answer : b) Torpedo

The characteristics of Class Reptilia are (a) body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca (b) fresh water animals with bony endoskeleton, air- bladder to regulate buoyancy (c) marine animals with cartilaginous endos- keleton, body covered with placoid scales (d) body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.

Description : The characteristics of Class Reptilia are (a) body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into ... dry and cornified skin, scales over the body are epidermal, they do not have external ears.

Last Answer : (d) body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.

The characteristics of Class Reptilia are (a) body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca (b) fresh water animals with bony endoskeleton, air- bladder to regulate buoyancy (c) marine animals with cartilaginous endos- keleton, body covered with placoid scales (d) body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.

Description : The characteristics of Class Reptilia are (a) body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into ... dry and cornified skin, scales over the body are epidermal, they do not have external ears.

Last Answer : (d) body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.

Assertion : A bony fish can stay at a particular depth without expending energy is a swimming contrary to the cartilaginous fishes. Reason : In bony f

Description : Assertion : A bony fish can stay at a particular depth without expending energy is a swimming contrary to the cartilaginous fishes. Reason : In bony f

Last Answer : Assertion : A bony fish can stay at a particular depth without expending energy is a swimming contrary ... D. If both Assertion and Reason are false.

Do cartilaginous fish have greatly enlarged cerebrums?

Description : Do cartilaginous fish have greatly enlarged cerebrums?

Last Answer : Need answer

In which one of the following is swim bladder absent? (1) Cutdefish (2) Bony fish (3) Cartilaginous fish (4) Silverfish

Description : In which one of the following is swim bladder absent? (1) Cutdefish (2) Bony fish (3) Cartilaginous fish (4) Silverfish

Last Answer : (3) Cartilaginous fish Explanation: The swim bladder is an internal gas-filled organ that contributes to the ability of a fish to control its buoyancy, and thus to stay at the current ... years ago and lack both lungs and swim bladders, suggesting that these structures evolved after that split.

Which one of the following pairs belongs to cartilaginous fish? (1) Shark and Tuna (2) Shark and Ray (3) Skates and Hilsa (4) RayandEel

Description : Which one of the following pairs belongs to cartilaginous fish? (1) Shark and Tuna (2) Shark and Ray (3) Skates and Hilsa (4) RayandEel

Last Answer : (2) Shark and Ray Explanation: Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, a twochambered heart, and skeletons made of cartilage rather than bone. ... by the minerals that make bone. It includes elasmobranchs: sharks, rays and skates, etc.

Two examples in which the nitrogenous wastes are excreted from body in the form of uric acid are (a) birds and lizards (b) frogs and cartilaginous fish (c) insects and bony fish (d) mammals and molluscs.

Description : Two examples in which the nitrogenous wastes are excreted from body in the form of uric acid are (a) birds and lizards (b) frogs and cartilaginous fish (c) insects and bony fish (d) mammals and molluscs.

Last Answer : (a) birds and lizards

Sharks are: a) amphibians b) bony fish c) cartilaginous fish (pron: kart-el-aj-eh-nes) d) reptiles

Description : Sharks are: a) amphibians b) bony fish c) cartilaginous fish (pron: kart-el-aj-eh-nes) d) reptiles

Last Answer : ANSWER: C -- CARTILAGINOUS FISH

In which one of the following is swim bladder absent ? (1) Cuttlefish (2) Bony fish (3) Cartilaginous fish (4) Silverfish

Description : In which one of the following is swim bladder absent ? (1) Cuttlefish (2) Bony fish (3) Cartilaginous fish (4) Silverfish

Last Answer : Cartilaginous fish

Which one of the following pairs belongs to cartilaginous fish ? (1) Shark and Tuna (2) Shark and Ray (3) Skates and Hilsa (4) Ray and Eel

Description : Which one of the following pairs belongs to cartilaginous fish ? (1) Shark and Tuna (2) Shark and Ray (3) Skates and Hilsa (4) Ray and Eel

Last Answer :  Shark and Ray

Could you go to the beach and enter the water safely billions of years ago here on earth? In the sense that there used to be different species of marine animals and fish that could be dangerous to humans.

Description : Could you go to the beach and enter the water safely billions of years ago here on earth? In the sense that there used to be different species of marine animals and fish that could be dangerous to humans.

Last Answer : Just going back 1 billion yeas will put you in the Protozoic Era. It would be pretty safe for humans. There were harmless sponges and single cell animals at that time. No fish, reptiles or marine mammals.

What is available in marine fish ?

Description : What is available in marine fish ?

Last Answer : Iodine is found in marine fish.

Marine Fish What? Found Goes ?

Last Answer : Marine Fish Iodine Found Goes.

Among the following edible fishes, which one is a marine fish having rich source of omega -3 fatty acids ?

Description : Among the following edible fishes, which one is a marine fish having rich source of omega -3 fatty acids ?

Last Answer : Among the following edible fishes, which one is a marine fish having rich source of omega -3 fatty acids ? A. Mrigala B. Mackerel C. Mystus D. Mangur

Marine bony fish have body fluids hypotonic to sea water and tend to lose water from the body through (a) Gill membrane (b) Oral membrane ( c) Anal me

Description : Marine bony fish have body fluids hypotonic to sea water and tend to lose water from the body through (a) Gill membrane (b) Oral membrane ( c) Anal me

Last Answer : Marine bony fish have body fluids hypotonic to sea water and tend to lose water from the body through (a) Gill ... and (c) only D. (b) and (c) only

Why do many marine fish drink seawater, whereas freshwater fish do not drink at all?

Description : Why do many marine fish drink seawater, whereas freshwater fish do not drink at all?

Last Answer : Marine fish, living in a hypertonic environment, suffer from a shortage of available water. They drink seawater and extract the water from the salt solution for their metabolic needs. However, ... requires energy and involves the participation of ATP-splitting enzymes in glands within the gill.  

Among the following edible fishes, which one is a marine fish having rich source of omega-3 fatty acids? (a) Mystus (b) Mangur (c) Mrigala (d) Mackerel

Description : Among the following edible fishes, which one is a marine fish having rich source of omega-3 fatty acids? (a) Mystus (b) Mangur (c) Mrigala (d) Mackerel

Last Answer : d) Mackerel

The National Marine Fisheries Service estimates that approximately ____ plants process fish and shellfish in the United States. a. 2,000 c. 2,500 b. 1,700 d. 1,500

Description : The National Marine Fisheries Service estimates that approximately ____ plants process fish and shellfish in the United States. a. 2,000 c. 2,500 b. 1,700 d. 1,500

Last Answer : d. 1,500

If we were to completely eliminate one group of marine organisms from the ocean, which would most likely be fatal to marin fish populations? Elimination of: a) urchins b) diatoms (pron: DIE-a-toms) c) starfishes d) sea anemones (pron: a-NEM-a-nees)

Description : If we were to completely eliminate one group of marine organisms from the ocean, which would most likely be fatal to marin fish populations? Elimination of: a) urchins b) diatoms (pron: DIE-a-toms) c) starfishes d) sea anemones (pron: a-NEM-a-nees)

Last Answer : ANSWER: B -- DIATOMS

What is a cartilaginous joint? -Biology

Description : What is a cartilaginous joint? -Biology

Last Answer : answer:

Which type of scales are found on the skin of cartilaginous fishes ?

Description : Which type of scales are found on the skin of cartilaginous fishes ?

Last Answer : Which type of scales are found on the skin of cartilaginous fishes ? A. cycloid B. Ctenoid C. Gonoid D. Placoid

Assertion `:-` Larynx is a cartilaginous box which helps in sound production. Reason `:-` Epiglottis flap covers the glottis during swallowing and pre

Description : Assertion `:-` Larynx is a cartilaginous box which helps in sound production. Reason `:-` Epiglottis flap covers the glottis during swallowing and pre

Last Answer : Assertion `:-` Larynx is a cartilaginous box which helps in sound production. Reason `:-` Epiglottis ... . D. If both Assertion & Reason are false.

Cartilaginous rings in trachea are incomplete at which surface.

Description : Cartilaginous rings in trachea are incomplete at which surface.

Last Answer : Cartilaginous rings in trachea are incomplete at which surface. A. Dorsal B. Ventral C. Lateral D. Ventrolateral

How many structures are supported by cartilaginous rings ? Larynx, Trachea, Bronchi, Initial bronchioles, Terminals bronchioles, Alveolar duct, Alveol

Description : How many structures are supported by cartilaginous rings ? Larynx, Trachea, Bronchi, Initial bronchioles, Terminals bronchioles, Alveolar duct, Alveol

Last Answer : How many structures are supported by cartilaginous rings ? Larynx, Trachea, Bronchi, Initial bronchioles, Terminals bronchioles ... . 7 B. 3 C. 4 D. 5

In some chordates, the notochord is replaced by cartilaginous or bony vertebral column. Name the chordates which possess this character.

Description : In some chordates, the notochord is replaced by cartilaginous or bony vertebral column. Name the chordates which possess this character.

Last Answer : In some chordates, the notochord is replaced by cartilaginous or bony vertebral column. Name the chordates which possess this character.

Do eels have a cartilaginous bone?

Description : Do eels have a cartilaginous bone?

Last Answer : What is the answer ?

The type of joint between the human skull bones is called (a) cartilaginous joint (b) hinge joint (c) fibrous joint (d) synovial joint.

Description : The type of joint between the human skull bones is called (a) cartilaginous joint (b) hinge joint (c) fibrous joint (d) synovial joint.

Last Answer : (c) fibrous joint

What is the name of joint between ribs and sternum? (a) Cartilaginous joint (b) Angular joint (c) Gliding joint (d) Fibrous join

Description : What is the name of joint between ribs and sternum? (a) Cartilaginous joint (b) Angular joint (c) Gliding joint (d) Fibrous join

Last Answer : (a) Cartilaginous joint

Which of the following pairs is correctly matched? (a) Hinge joint – Between vertebrae (b) Gliding joint – Between zygapophyses of the successive vertebrae (c) Cartilaginous joint – Skull bones (d) Fibrous joint – Between phalanges

Description : Which of the following pairs is correctly matched? (a) Hinge joint – Between vertebrae (b) Gliding joint – Between zygapophyses of the successive vertebrae (c) Cartilaginous joint – Skull bones (d) Fibrous joint – Between phalanges

Last Answer : (b) Gliding joint – Between zygapophyses of the successive vertebrae

Select the correct matching of the type of the joint with the example in human skeletal system. Type of joint Example (a) Cartilaginous – Between frontal and joint parietal (b) Pivot joint – Between third and fourth cervical vertebrae (c) Hinge joint – Between humerus and pectoral girdle (d) Gliding joint – Between carpals

Description : Select the correct matching of the type of the joint with the example in human skeletal system. Type of joint Example (a) Cartilaginous - Between frontal and joint parietal (b) Pivot joint - ... vertebrae (c) Hinge joint - Between humerus and pectoral girdle (d) Gliding joint - Between carpals

Last Answer : (d) Gliding joint – Between carpals

Which of the following joints would allow no movements? (a) Synovial joint (b) Ball and socket joint (c) Fibrous joint (d) Cartilaginous joint

Description : Which of the following joints would allow no movements? (a) Synovial joint (b) Ball and socket joint (c) Fibrous joint (d) Cartilaginous joint

Last Answer : (c) Fibrous joint

The pivot joint between atlas and axis is a type of (a) cartilaginous joint (b) synovial joint (c) saddle joint (d) fibrous joint.

Description : The pivot joint between atlas and axis is a type of (a) cartilaginous joint (b) synovial joint (c) saddle joint (d) fibrous joint.

Last Answer : b) synovial join

The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and / or characteristic. (a) C - Alveoli - Thin walled vascular bag like structures for exchange of gases. (b) D - Lower end of lungs - Diaphragm pulls it down during inspiration. (c) A - Trachea - Long tube supported by complete cartilaginous rings for conducting inspired air. (d) B - Pleural membrane - Surround ribs on both sides to provide cushion against rubbing.

Description : The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and / or characteristic. (a) C - ... air. (d) B - Pleural membrane - Surround ribs on both sides to provide cushion against rubbing.

Last Answer : (a) C - Alveoli - Thin walled vascular bag like structures for exchange of gases.

Which one of the following groups of animals is correctly matched with its characteristic feature without any exception? (a) Reptilia : possess 3-chambered heart with an incompletely divided ventricle (b) Chordata : possess a mouth with an upper and a lower jaw (c) Chondrichthyes : possess cartilaginous endo- skeleton (d) Mammalia : give birth to young ones

Description : Which one of the following groups of animals is correctly matched with its characteristic feature without any exception? (a) Reptilia : possess 3-chambered heart with an incompletely divided ... ) Chondrichthyes : possess cartilaginous endo- skeleton (d) Mammalia : give birth to young ones

Last Answer : (c) Chondrichthyes : possess cartilaginous endo- skeleton

Which one of the following groups of animals is correctly matched with its characteristic feature without any exception? (a) Reptilia : possess 3-chambered heart with an incompletely divided ventricle (b) Chordata : possess a mouth with an upper and a lower jaw (c) Chondrichthyes : possess cartilaginous endo- skeleton (d) Mammalia : give birth to young ones

Description : Which one of the following groups of animals is correctly matched with its characteristic feature without any exception? (a) Reptilia : possess 3-chambered heart with an incompletely divided ... ) Chondrichthyes : possess cartilaginous endo- skeleton (d) Mammalia : give birth to young ones

Last Answer : (c) Chondrichthyes : possess cartilaginous endo- skeleton

Which of the following characteristic features always holds true for the corresponding group of animals? (a) Possess a mouth with an Chordata upper and a lower jaw (b) 3–chambered heart with Reptilia one incompletely divided ventricle (c) Cartilaginous endoskeleton Chondrichthyes (d) Viviparous

Description : Which of the following characteristic features always holds true for the corresponding group of animals? (a) Possess a mouth with an Chordata upper and a lower jaw (b) 3- ... heart with Reptilia one incompletely divided ventricle (c) Cartilaginous endoskeleton Chondrichthyes (d) Viviparous

Last Answer : (c) Cartilaginous endoskeleton

The pivot joint between atlas and axis is a type of : (1) Cartilaginous joint (2) Synovial joint (3) Saddle joint (4) Fibrous joint

Description : The pivot joint between atlas and axis is a type of : (1) Cartilaginous joint (2) Synovial joint (3) Saddle joint (4) Fibrous joint

Last Answer : (2) Synovial joint

Match List -I (Bearings) with List-II (Applications) and select the using the codes given below the lists: [IAS-1998] List –I List-II A. Journal bearing 1. Electric motors B. Thrust bearing 2. Watches C. Conical pivot bearing 3. Marine engines D. Ball bearing 4. Swivelling chairs A B C D A B C D (a) 3 4 1 2 (b) 4 2 1 3 (c) 3 4 2 1 (d) 4 2 3 1

Description : Match List -I (Bearings) with List-II (Applications) and select the using the codes given below the lists: [IAS-1998] List -I List-II A. Journal bearing 1. Electric motors B. Thrust bearing 2. Watches C. Conical pivot bearing 3. Marine ... D (a) 3 4 1 2 (b) 4 2 1 3 (c) 3 4 2 1 (d) 4 2 3 1

Last Answer : (c) 3 4 2 1

Find the minimum number of cells required to produce an electric current of 1.5 A through a resistance of `30 Omega`. Given that the emf of each cell

Description : Find the minimum number of cells required to produce an electric current of 1.5 A through a resistance of `30 Omega`. Given that the emf of each cell

Last Answer : Find the minimum number of cells required to produce an electric current of 1.5 A through a resistance ... .5 V and internal resistance `1.0 Omega`.

What type of magnets are produce by running electric current through a soft iron core?

Description : What type of magnets are produce by running electric current through a soft iron core?

Last Answer : electromagnet

Give reason: Stationary coil and stationary magnet cannot produce induced electric current.

Description : Give reason: Stationary coil and stationary magnet cannot produce induced electric current.

Last Answer : An emf is induced in the coil only when there is relative motion between the coil and the magnet.

An electric current can produce a) heating effect c)chemical effect b) magnetic effect d)chemical, magnetic and heating effect

Description : An electric current can produce a) heating effect c)chemical effect b) magnetic effect d)chemical, magnetic and heating effect

Last Answer : d)chemical, magnetic and heating effect

Why do fish produce so many egg?

Description : Why do fish produce so many egg?

Last Answer : Of the many eggs fish lay, very few reach adulthood. The eggs are preyed on by many aquatic creatures, and the hatched fry are still in danger of being eaten. Only by laying so many eggs can the species have a chance of surviving.

Fish possessing an electric organ with examples. -Biology

Description : Fish possessing an electric organ with examples. -Biology

Last Answer : answer:

Which fish gives electric shock ?

Last Answer : eel fish give electric shock.

Is it true that some fish give electric shocks?

Description : That's probably a fabrication, isn't it? Where would she take the current.

Last Answer : Electric eel live in the waters of South American rivers and swamps. It grows to a length of two and a half meters and a full four-fifths of the length of its body is occupied ... to communicate with each other. http://www.lidovky.cz/jeste-nabitejsi-uhor-0rr-/veda.aspx?c=A081007_084657_ln_veda_mtr

$ Electric ray fish is also called Torpedo ! Dinosaurs are also called Thunder-Lizards.

Description : $ Electric ray fish is also called Torpedo ! Dinosaurs are also called Thunder-Lizards.

Last Answer : $ Electric ray fish is also called Torpedo ! Dinosaurs are also called Thunder-Lizards. A. If both As and ... is wrong D. If both As and R are wrong.