Home
Class 12
BIOLOGY
Bony fishes can stay at a particular de...

Bony fishes can stay at a particular depth in water without beating their pectoral and pelvic fins due to the presence of

A

Pneumatic bones

B

Lateral line sense organs (Neuromast organs)

C

Air bladder

D

Streamlined body

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Question**: The question asks why bony fishes can maintain a specific depth in water without the need to constantly move their pectoral and pelvic fins. 2. **Identifying the Options**: The options provided are: - A) Pneumonic bones - B) Lateral line sense organ - C) Air bladder - D) Streamlined body 3. **Analyzing Each Option**: - **A) Pneumonic Bones**: These are hollow bones found in birds that assist in flight. They are not relevant to bony fishes. - **B) Lateral Line Sense Organ**: This organ helps fish detect vibrations and movements in the water, but it does not assist in maintaining depth. - **C) Air Bladder**: Also known as the swim bladder, this gas-filled organ allows bony fishes to control their buoyancy. By adjusting the amount of gas in the bladder, they can stay at a desired depth without expending energy. - **D) Streamlined Body**: While a streamlined body helps reduce resistance in water, it does not specifically aid in maintaining depth without movement. 4. **Conclusion**: The correct answer is **C) Air bladder**. This organ enables bony fishes to maintain their position in the water column without the need for constant fin movement.
Promotional Banner

Topper's Solved these Questions

  • ANIMAL KINGDOM (CHORDATES)

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-A)|55 Videos

  • ANIMAL KINGDOM (CHORDATES)

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-B)|11 Videos

  • ANIMAL KINGDOM (CHORDATES)

    AAKASH INSTITUTE ENGLISH|Exercise Try yourself|12 Videos

  • ANATOMY OF FLOWERING PLANTS

    AAKASH INSTITUTE ENGLISH|Exercise Section D Assertion-Reason Type Questions|10 Videos

  • ANIMAL KINGDOM (GENERAL ACCOUNTS & NON-CHORDATES)

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-D)|10 Videos

Similar Questions

Explore conceptually related problems

Pelvic fins of bony fishes are

Assertion : A bony fish can stay at a particular depth without expending energy is a swimming contrary to the cartilaginous fishes. Reason : In bony fishes, the swim bladder is present which helps in buoyancy. (a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. (b) If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion. (c) If Assertion is true, but Reason is false (d) If both Assertion and Reason are false.

Assertion : Reptiles can be termed as first true land animals Reason : These are completely independent of water due to the development of internal fertilization and the presence of a special membrane ( amnion) around the developing embryo.

Alkali metals oxide are obtained by combustion of the metals.Although Na normally gives Na_2O_2 ,it will take up further oxygen at elevated pressure and temperature to form NaO_2 .The per and superoxides of the heavier alkalies can also be prepared by passing stoichiometric amounts of oxygen into their solution in liquid ammonia. The different alkali metal oxides can be distinguished by reaction with water.The superoxides reacts with CO_2 and give oxygen gas.The stability of per and superoxides is based upon that larger cation can stablise larger anion, due to larger lattice energy. Alkali metals dissolve in liquid ammonia.Dilute solutions are dark blue in colour but as the concentration increases above 3M, the colour changes to copper bronze and the solution acquires the metallic lusture due to the formation of metal ions clusters.The solutions of alkali metals in liquid ammonia are good conductors of electricity due to the presence of ammoniated cations and ammoniated electrons.However, the conductivity decreases as the concentrations increases, since ammoniated electrons and ammoniated cation associate. Solution of sodium metals in liquid ammonia is strongly reducing due to the presence of :

Alkali metals oxide are obtained by combustion of the metals.Although Na normally gives Na_2O_2 ,it will take up further oxygen at elevated pressure and temperature to form NaO_2 .The per and superoxides of the heavier alkalies can also be prepared by passing stoichiometric amounts of oxygen into their solution in liquid ammonia. The different alkali metal oxides can be distinguished by reaction with water.The superoxides reacts with CO_2 and give oxygen gas.The stability of per and superoxides is based upon that larger cation can stablise larger anion, due to larger lattice energy. Alkali metals dissolve in liquid ammonia.Dilute solutions are dark blue in colour but as the concentration increases above 3M, the colour changes to copper bronze and the solution acquires the metallic lusture due to the formation of metal ions clusters.The solutions of alkali metals in liquid ammonia are good conductors of electricity due to the presence of ammoniated cations and ammoniated electrons.However, the conductivity decreases as the concentrations increases, since ammoniated electrons and ammoniated cation associate. KO_2 is used in oxygen cylinders in space and submarines because it :

Alkali metals oxide are obtained by combustion of the metals.Although Na normally gives Na_2O_2 ,it will take up further oxygen at elevated pressure and temperature to form NaO_2 .The per and superoxides of the heavier alkalies can also be prepared by passing stoichiometric amounts of oxygen into their solution in liquid ammonia. The different alkali metal oxides can be distinguished by reaction with water.The superoxides reacts with CO_2 and give oxygen gas.The stability of per and superoxides is based upon that larger cation can stablise larger anion, due to larger lattice energy. Alkali metals dissolve in liquid ammonia.Dilute solutions are dark blue in colour but as the concentration increases above 3M, the colour changes to copper bronze and the solution acquires the metallic lusture due to the formation of metal ions clusters.The solutions of alkali metals in liquid ammonia are good conductors of electricity due to the presence of ammoniated cations and ammoniated electrons.However, the conductivity decreases as the concentrations increases, since ammoniated electrons and ammoniated cation associate. Select the correct choice for alkali metal oxides.

Alkali metals oxide are obtained by combustion of the metals.Although Na normally gives Na_2O_2 ,it will take up further oxygen at elevated pressure and temperature to form NaO_2 .The per and superoxides of the heavier alkalies can also be prepared by passing stoichiometric amounts of oxygen into their solution in liquid ammonia. The different alkali metal oxides can be distinguished by reaction with water.The superoxides reacts with CO_2 and give oxygen gas.The stability of per and superoxides is based upon that larger cation can stablise larger anion, due to larger lattice energy. Alkali metals dissolve in liquid ammonia.Dilute solutions are dark blue in colour but as the concentration increases above 3M, the colour changes to copper bronze and the solution acquires the metallic lusture due to the formation of metal ions clusters.The solutions of alkali metals in liquid ammonia are good conductors of electricity due to the presence of ammoniated cations and ammoniated electrons.However, the conductivity decreases as the concentrations increases, since ammoniated electrons and ammoniated cation associate. On dissolving smaller (less than 3M) amount of sodium metal in liquid ammonia at low temperature , which one of the following does not occur ?