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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Answer the following question. Amphibian tadpole can afford to be ammonotelic. Justify.

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प्रश्न

Answer the following question.

Amphibian tadpole can afford to be ammonotelic. Justify.

टीपा लिहा
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उत्तर

  1. Tadpole (larval stage of life cycle of amphibian) is aquatic. They are ammonotelic as they excrete nitrogenous waste in the form of ammonia.
  2. Ammonia is very toxic and requires large amount of water for its elimination.
  3. It is readily soluble in water and diffuses across the body surface and into the surrounding water.
  4. Also, the water lost during excretion can be made up through the surrounding water in ammonotelic organisms.
    Hence, amphibian tadpole can afford to be ammonotelic.
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पाठ 15: Excretion and Osmoregulation - Exercise [पृष्ठ १९१]

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बालभारती Biology [English] Standard 11 Maharashtra State Board
पाठ 15 Excretion and Osmoregulation
Exercise | Q 3. (B) | पृष्ठ १९१

संबंधित प्रश्‍न

Bile, Urea, Uric acid, Ammonia


Draw the well-labelled diagram of the human excretory system


Bowman’s capsule and tubule taken together make a ______.


Explain the principle of dialysis with the help of a labelled diagram.


The excretory unit in the human excretory system is called ______.


The organs A of a person have been damaged completely due to which too much of a poisonous waste material B has started accumulating in his blood, making it dirty. In order to save this person’s life, the blood from an artery in the person’s arm is made to flow into long tubes made of substance E which are kept in coiled form in a tank containing solution F. This solution contains three materials G, H and I in similar proportions to those in normal blood. As the person’s blood passes through long tubes of substance E, most of the wastes present in it go into solution. The clean blood is then put back into a vein in the arm of the person for circulation.

  1. What are organs A?
  2. Name the waste substance B.
  3. What are (i) E, and (ii) F?
  4. Name G, H and I.
  5. What is the process described above known as?

Look at the figure given below. It is a section of human kidney as seen from the front.

Which area/part (give its name and number given on the diagram) which contains the following:

(i) Malpighian capsule

(ii) The pyramids

(iii) Freshly collected urine


Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:

Why does the cortex of the kidney show a dotted appearance?


State the Location: Renal pyramids


Write the functional activity of the following structure: Kidney


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