Write a note on exchange of gases in aquatic animals?

Write a note on exchange of gases in aquatic animals? 
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1 Answer

Answer :

Through Skin: - The skin of aquatic animals is moist and rich with blood so that oxygen can diffuse directly. Frog and tortoises breathe through skin during hibernation. 

Through Gills: - Gills are very effective for gaseous exchange in aquatic animals. Some animals have external gills. Water enters through mouth flows over the gills and goes out of the body.  
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Related questions

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The primary site of exchange of gases in our body? -Biology

Description : The primary site of exchange of gases in our body? -Biology

Last Answer : answer:

The primary site of exchange of gases in our body? -Biology

Description : The primary site of exchange of gases in our body? -Biology

Last Answer : answer:

The respiratory membranes facilitates the exchange of respiratory gases through diffusion . Oxygen enters the deoxygenated blood through diffusion bec

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How are gases exchange in a sponge?

Description : How are gases exchange in a sponge?

Last Answer : they are not

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Description : What are opening in the bark that allows the exchange of gases?

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Description : The exchange of gases in mammals takes place in the (a) larynx (b) trachea (c) alveoli (d) bronchi

Last Answer : Ans:(c)

What is the part of the vascular system that performs exchange of gases and other substances with the tissues?

Description : What is the part of the vascular system that performs exchange of gases and other substances with the tissues?

Last Answer : Only capillaries perform exchange of gases and other substances with the tissues.

The exchange of gases takes place in the leaves through these pores for the purpose of photosynthesis. These pores are called – (1) Guard Cells (2) Stomata (3) Chloroplast (4) None of the above

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Description : Explain the exchange of gases in lungs?

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Description : The exchange of gases in the alveoli of the lungs takes place by (a) passive transport (b) active transport (c) osmosis (d) simple diffusion.

Last Answer : d) simple diffusion.

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Last Answer : (b) A : Alveolar cavity - Main site of exchange of respiratory gases

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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.

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Description : 6. Liquefaction of gases cannot be done by (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Merely compressing it beyond critical pressure (D) Adiabatic expansion against a piston or in a turbine

Last Answer : (C) Merely compressing it beyond critical pressure

I have three envelopes, into one of them I put a $20 note. I lay the envelopes out on a table in front of me and allow you to pick one envelope. You hold but do not open this envelope. I then take one of the envelopes from the table, demonstrate to you that it was empty, screw it up and throw it away. The question is would you rather stick with the envelope you have selected or exchange it for the one on the table. Why? What would be the expected value to you of the exchange? -Riddles

Description : I have three envelopes, into one of them I put a $20 note. I lay the envelopes out on a table in front of me and allow you to pick one envelope. You hold but do not open this envelope. I then ... it for the one on the table. Why? What would be the expected value to you of the exchange? -Riddles

Last Answer : The answer might seem a little counter intuitive at first but we'll see... The short answer is that it is in your advantage to exchange. But why? Well initially there was a 1/3 chance that you were holding ... /3 of $20 and afterwards you will have 2/3 of $20, ie the advantage to you is about $6.66

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Description : The section 4 of the Negotiable Instruments Act, 1881 deals with ________ A. Cheque B. Bills of Exchange C. Promissory Note D. All of the Above E. None of the Above

Last Answer : C. Promissory Note Explanation: The section 4 of the Negotiable Instruments Act, 1881 deals with Promissory Note.

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Last Answer : B. A bill of exchange

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Last Answer : A. Holder of the instrument

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Description : A promissory note or bill of exchange which is not expressed to be payable on demand, at sight or on presentment is at maturity A. On the 30th day after the day on which it is expressed to be ... expressed to be payable D. On the 4th day after the day on which it is expressed to be payable.

Last Answer : D. On the 4th day after the day on which it is expressed to be payable.

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Description : If an instrument may be construed either as a promissory note or bill of exchange, it is A. A valid instrument B. An ambiguous instrument C. A returnable instrument D. None of the above.

Last Answer : A valid instrument