............ regulation is the control o...

............ regulation is the control of tissues osmotic pressure which acts as a driving force for movement of water across biological membranes.

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Read the given paragraph and select the option that correctly fills the blanks in it. Hormones produce their effect on target tissue by binding to specific A called hormone receptors located in the target tissues only water soluble hormones usually need B receptor that generate C messenger for regulating through cell membrane and bind to E receptors, mostly nuclear receptors. The hormone receptor complex enter the nucleus and moslty regulate gene expression or chromosome function by interaction of hormone receptor complex with the genone.

Which of the following statements about plasmolysis is/are true?I. Plasmolysis occurs when water moves into the cell.II. Cells shrink in hypotonic solutions.III. If the external solution balances the osmotic pressure of the cytoplasm, it is said to be isotonic.

Identify the biological term. Excretion, glomerulus, urinary bladder, glomerular filtrate, ureters, urine, Bowman's capsule, urinary system, reabsorption, micturition, osmosis, proteins. (a) A liquid which gathers in the bladder. (b) Produced when blood is filtered in a Bowman's capsule. (c) Temporary storage of urine. (d) A ball of inter twined capillaries. (e) Removal of unwanted substances from the body. (f) Each contains a glomerulus. (g) Carry urine from the kidneys to the bladder. (h) Scientific term for urination. (i) Regulation of water and dissolved substances in blood and tissue fluid. (j) Consists of the kidneys, ureters and bladder. (k) Removal of useful substances from glomerular filtrate. (l) What solute the blood contains that are not present in the glomerular filtrate?

Select the correct biological term. Lymphocytes, red cells, leucocytes, plasma, erythrocytes, whitc cells, hacmoglobin, phagocyte, platelets, blood clot. (a) Disc shaped cells which are concave on both sides. (b) Most of these liave a large, bilobed nucleus. (c) Enable red cells to transport blood. (d) The liquid part of the blood. (e) Most of them move and change shape like an amocba. (f) Consists of water and important dissolved substances, (g) Destroyed in the liver and spleen after circulating in the blood for four months. (h) The substances which gives red cells their colour. (i) Another name for red blood cells. (j) Blood that has been changed 10 a jelly. (k). A word that means cell eater, (l) Cells without nucleus. (m) White cells made in the lymphatic tissue. (n) Blocks wound and prevent excessive bleeding. (o) Fragment of cells which are made in the bone marrow. (p) Another name for white blood cells. (q) Slowly releases oxygen to blood cells. (r) Their function is to help blood clot in wounds.

What will be the direction of net osmotic movement of water if a solution 'A', enclosed in a semi permeable membrane, having an osmotic potential of - 30 ' bars and turgor pressure of d'5' bars is submerged in a solution 'B' with an osmotic potential of '-10 ' bars and '0' turgor pressure ?

Differentiate between the following: (a) Diffusion and Osmosis (b) Transpiration and Evaporation (c) Osmotic Pressure and Osmotic Potential (d) Imbibition and Diffusion (e) Apoplast and Symplast pathways of movement of water in plants. (f) Guttation and Transpiration.

Which of the following statements is incorrect about the frog ? (i) Eyes are bulged out and covered by a nictitating membrane that protects them while in water (ii) On either side of the eyes a membranous tympanum (ear) receives sound signals (iii) The hind limbs end in four digits and they are largerr and muscular then force limbs that end in five digits (iv) Frogs exhibit sexual dimorphism.

FULL MARKS-EXCRETION-ADDITIONAL QUESTIONS SOLVED ( FILL IN THE BLANKS ):

............ regulation is the control of tissues osmotic pressure whi...
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.................... regulation is the control of the ionic compositio...
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....................... is the toxic nitrogenous end product of protei...
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........................ are able to change their internal osmotic con...
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......................, maintain their internal osmotic concentration ...
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The ........................ animals can tolerate only narrow fluctuat...
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The ........................ animals are able to tolerate wide fluctua...
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...................... is the waste product of protein metabolism in s...
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................. requires large amount of water for its elimination
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.................... is the least toxic waste product of protein metab...
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Animals that excrete ammonia are called .........
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The animals that excrete uric acid crystals are called ……..
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The animals that excrete urea are called ............
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..... are the excretory structures in flatworms.
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Solenocytes are the excretory cells present in ..........
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...................... are the excretory structures in insects
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.............. function excretory function in prawns.
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...... are the structural and functional unit of kidneys.
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The right kidney is placed slightly lower than the left kidney due to ...
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The medulla of kidney is divided into a few conical tissue masses call...
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