Sharks and dogfishes differ from skates and rays because (a) gill slits are ventrally placed (b) head and trunk are widened considerably (c) distinct demarcation between body and tail (d) their pectoral fins distinctly marked off from cylindrical bodies.

Sharks and dogfishes differ from skates and rays
because
(a) gill slits are ventrally placed
(b) head and trunk are widened considerably
(c) distinct demarcation between body and tail
(d) their pectoral fins distinctly marked off from
cylindrical bodies.
by

1 Answer

Answer :

(d) their pectoral fins distinctly marked off from
cylindrical bodies.
by

Related questions

Sharks and dogfishes differ from skates and rays because (a) gill slits are ventrally placed (b) head and trunk are widened considerably (c) distinct demarcation between body and tail (d) their pectoral fins distinctly marked off from cylindrical bodies

Description : Sharks and dogfishes differ from skates and rays because (a) gill slits are ventrally placed (b) head and trunk are widened considerably (c) distinct demarcation between body and tail (d) their pectoral fins distinctly marked off from cylindrical bodies

Last Answer : (d) their pectoral fins distinctly marked off from cylindrical bodies

Which one of the following is a matching pair of a body feature and the animal possessing it? (a) Ventral central – Leech nervous system (b) Pharyngeal gill slits – Chamaeleon absent in embryo (c) Ventral heart – Scorpion (d) Post-anal tail – Octopus

Description : Which one of the following is a matching pair of a body feature and the animal possessing it? (a) Ventral central – Leech nervous system (b) Pharyngeal gill slits – Chamaeleon absent in embryo (c) Ventral heart – Scorpion (d) Post-anal tail – Octopus

Last Answer : (a) Ventral central – Leech nervous system

Members of the order Apodes, these elongated slender fishes are without pelvic fins and in some species lack pectoral or median GENR-92; Short Answer: What is a shark's skeleton made of?

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Last Answer : ANSWER: CARTILAGE

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

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Crocodile and penguin are similar to whale and dogfish in which one of the following features? (a) Possess a solid single stranded central nervous system (b) Lay eggs and guard them till they hatch (c) Possess bony skeleton (d) Have gill slits at some stage

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Last Answer : (d) Have gill slits at some stage

Important characteristic that hemichordates share with chordates is (a) ventral tubular nerve cord (b) pharynx with gill slits (c) pharynx without gill slits (d) absence of notochord.

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Last Answer : (b) pharynx with gill slits

Match the following columns and select the correct option. Column-I Column-II (A) 6-15 pairs of gill slits (i) Trygon (B) Heterocercal caudal fin (ii) Cyclostomes (C) Air bladder (iii) Chondrichthyes (D) Poison sting (iv) Osteichthyes(A) (B) (C) (D) (a) (ii) (iii) (iv) (i) (b) (iii) (iv) (i) (ii) (c) (iv) (ii) (iii) (i) (d) (i) (iv) (iii) (ii)

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Last Answer : (a) (ii) (iii) (iv) (i)

pharyngeal gill slits in embryonic stage is a a) Anatomical evidence b) morphological evidence c) Embryological evidence d) fossil evidence

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An important characteristic that Hemichordates share with Chordates is : (1) Ventral tubular nerve cord (2) Pharynx with gill slits (3) Pharynx without gill slits (4) Absence of notochord

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A fish which has escaped from a fisherman’s net has lost one of its pectoral fins. What difficulty will it face while swimming?

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Which one of the following animals is correctly matched with its one characteristic and the taxon? Animal Characteristic Taxon (a) Millipede Ventral nerve Arachnida cord (b) Sea anemone Triploblastic Cnidaria (c) Silver fish Pectoral and Chordata pelvic fins (d) Duckbilled Oviparous Mammalia platypus

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Last Answer : (d) Duckbilled Oviparous Mammalia platypus

Which one of the following animals is correctly matched with its one characteristic and the taxon? Animal Characteristic Taxon (a) Millipede Ventral nerve Arachnida cord (b) Sea anemone Triploblastic Cnidaria (c) Silver fish Pectoral and Chordata pelvic fins (d) Duckbilled Oviparous Mammalia platypus

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Last Answer : (d) Duckbilled Oviparous Mammalia platypus

Why do sharks swim with their fins out of the water?

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.A common characteristic of all vertebrates without exception is (a) the division of body into head, neck, trunk and tail (b) their body covered with an exoskeleton (c) the possession of two pairs of functional appendages (d) the presence of well-developed skull

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In male sharks, Claspers are found attached to (1) Anal fin (2) Pectoral fin (3) Pelvic fin (4) Ventral fin

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Shortly after take-off, the altitude of the aeroplane suffers an abrupt pitch-up and IAS rapidly decreases followed quickly by a decrease in altitude. Engine indications are normal. You should suspect what and what should you do? a. Marked temperature drop; apply full power b. Loss of head wind or an increase in tail wind; apply full power c. Incipient engine failure (ignore instruments); lower the nose to gain airspeed d. Local clear air turbulence; reduce speed to VRA and ride it out

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Which of the following findings in the patient who has sustained a head injury indicate increasing intracranial pressure (ICP)? a) Widened pulse pressure Additional signs of increasing ICP include increasing systolic blood pressure, bradycardia, rapid respirations, and rapid rise in body temperature.

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Bus consists of a single linear cable called a__: a) Head b) Tail c) Trunk d) None of These

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Why did we ever think tail fins belonged on automobiles?

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In a Young's double-slit experiment the center of a bright fringe occurs wherever waves from the slits differ in the distance they travel by a multiple of: A. a fourth of a wavelength B. a half a wavelength C. a wavelength D. three-fourths of a wavelength

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“Sharks do not have a single bone in their bodies.”

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Which class of animals has 5-6 pairs of gill holes on their head ?

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In a box, there are 20 marbles. Each marble is marked with a distinct number from 1 to 20. Find the probability of drawing a marble from the box which

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A letter lock consists of four rings each marked with five different letters. The number of distinct unsuccessful attempts to open the lock is at the most -. a) 625 b) 676 c) 576 d) 624 e) 575

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15. An object 2 cm high is placed at a distance of 64 cm from a white screen. On placing a convex lens at a distance of 32 cm from the object it is found that a distinct image of the object is formed on the screen. What is the focal length of the conve -Chemistry-10

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Which one of the following is not a line of demarcation between two countries? (1) International Date Line (2) MacMahon Line (3) Radcliffe Line (4) Durand Line

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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

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