295 + Interview Questions in EXCRETION IN GENERAL AWARENESS Page 3 InterviewSolution

101.	Look at the picture and answer the questions, (label bottle on left as X and bottle on right as Y)The above is a procedure of haemodialysis in a hospital. i) What are the liquids X and Y, in the picture? ii) What is the purpose of this procedure and for whom is it needed?
Answer» i) X – Dialyzing fluid; Y – Urine ii) It is a process of removal of poisonous nitrogenous wastes from blood. This process is needed by uremic or kidney failure patients.

101.

Look at the picture and answer the questions, (label bottle on left as X and bottle on right as Y)The above is a procedure of haemodialysis in a hospital. i) What are the liquids X and Y, in the picture? ii) What is the purpose of this procedure and for whom is it needed?

Answer»

i) X – Dialyzing fluid; Y – Urine

ii) It is a process of removal of poisonous nitrogenous wastes from blood. This process is needed by uremic or kidney failure patients.

Discussion

102.	Read the following passage and answer the questions.Plants can get rid of excess water by a process like transpiration and guttation. Waste products may be stored in leaves, bark, and fruits. When these dead leaves, bark, and ripe fruits fall off from the tree then waste products in them are removed. Waste gets stored in the fruits in the form of solid bodies called ‘raphides’. However several compounds are synthesized by the plants for their own use especially for defence. Many plants synthesize chemicals and store them in roots, leaves, seeds, etc. for protection against herbivores. Most of the chemicals are unpleasant to taste. Hence herbivores usually do not prefer to eat such plants. Some of the chemicals are toxic and may even kill the animals that eat them.i) What are raphides? ii) How do plants protect themselves against herbivores? iii) How do plants get rid of wastes?iv) Name the processes by which plants lose excess of water.
Answer» i) The wastes stored in some fruits in the form of solid bodies are called “raphides”. ii) Many plants synthesize chemicals and store them in roots, leaves, seeds, etc. for protection against herbivores. iii) Waste products may be stored in leaves, bark and fruits. When these dead leaves, bark and ripe fruits fall off from the tree. Then waste products in them are removed. iv) Plants lose excess of water by transpiration and guttation.

102.

Read the following passage and answer the questions.Plants can get rid of excess water by a process like transpiration and guttation. Waste products may be stored in leaves, bark, and fruits. When these dead leaves, bark, and ripe fruits fall off from the tree then waste products in them are removed. Waste gets stored in the fruits in the form of solid bodies called ‘raphides’. However several compounds are synthesized by the plants for their own use especially for defence. Many plants synthesize chemicals and store them in roots, leaves, seeds, etc. for protection against herbivores. Most of the chemicals are unpleasant to taste. Hence herbivores usually do not prefer to eat such plants. Some of the chemicals are toxic and may even kill the animals that eat them.i) What are raphides? ii) How do plants protect themselves against herbivores? iii) How do plants get rid of wastes?iv) Name the processes by which plants lose excess of water.

Answer»

i) The wastes stored in some fruits in the form of solid bodies are called “raphides”.

ii) Many plants synthesize chemicals and store them in roots, leaves, seeds, etc. for protection against herbivores.

iii) Waste products may be stored in leaves, bark and fruits. When these dead leaves, bark and ripe fruits fall off from the tree. Then waste products in them are removed.

iv) Plants lose excess of water by transpiration and guttation.

Discussion

103.	What is the storage capacity of urinary bladder?
Answer» The storage capacity of urinary bladder is 300 – 800 ml.

Discussion

104.	Observe the following table.Name of the phylum / organismExcretory system / organProtozoa PoriferaDiffusion Water bathes all their cellsPlatyhelmirthesFlame cellsAnnelidaNephridiaArthropodaGreen glandsReptiles, Aves and MammalsKidneyOn the basis of above table, write answers to the following questions.i) In above table, which living organisms contains kidneys as excretory organs like human beings?ii) Write the excretory organs present in Earthworm and Cockroach.
Answer» i) Reptiles and Aves. ii) Earthworm – Nephridia Cockroach – Green glands

104.

Observe the following table.Name of the phylum / organismExcretory system / organProtozoa PoriferaDiffusion Water bathes all their cellsPlatyhelmirthesFlame cellsAnnelidaNephridiaArthropodaGreen glandsReptiles, Aves and MammalsKidneyOn the basis of above table, write answers to the following questions.i) In above table, which living organisms contains kidneys as excretory organs like human beings?ii) Write the excretory organs present in Earthworm and Cockroach.

Answer»

i) Reptiles and Aves.

ii) Earthworm – Nephridia Cockroach – Green glands

Discussion

105.	The method through which excessive water is released out along with transpiration is ............A) Photosynthesis B) Guttation C) Formation of bark D) Respiration
Answer» Answer is (B) Guttation (B) Guttation is right answer

Discussion

106.	The alkaloid which stimulates the nervous system is A) Nimbin B) Caffeine C) Pyrethroid D) Quinine
Answer» The alkaloid which stimulates the nervous system is Caffeine

Discussion

107.	Which flowers and fruits are used to extract sedative scopalamine?
Answer» The sedative scopalamine is extracted from the flowers and fruits of Datura stramonium.

Discussion

108.	Find the odd one out. A) Carbohydrate B) Protein C) Nimbin D) Fat
Answer» Answer is (C) Nimbin

Discussion

109.	Which of the following is catabolic activity ? A) PhotosynthesisB) Respiration C) Excretion D) Metabolic activities
Answer» (B) Respiration

Discussion

110.	Datura has ……… A) Nimbin B) Pyrethroids C) Scopalamine D) Quinine
Answer» Datura has Scopalamine

Discussion

111.	What is not really concerned with excretion given below ? A) To send CO2 out B) Defecation C) Sweat D) to remove urea
Answer» A) To send CO₂ out

Discussion

112.	Short note on Willem Johan Kolff.
Answer» William John Kolff (1911 – 2009): William John Kolif invented the first practical artificial kidney in 1947. He was a pioneer of Haemodialysis as well as in the field of artificial organs. He constructed a dialysis machine with which filtered the blood artificially. The machine works on simple principles of diffusion and filtration across a semipermeable membrane.

112.

Short note on Willem Johan Kolff.

Answer»

William John Kolff (1911 – 2009):

William John Kolif invented the first practical artificial kidney in 1947.
He was a pioneer of Haemodialysis as well as in the field of artificial organs.
He constructed a dialysis machine with which filtered the blood artificially.
The machine works on simple principles of diffusion and filtration across a semipermeable membrane.

Discussion

113.	List out the things that makes you amazing in excretory system of human being.(OR) How do you appreciate the functioning of excretory system of human being?
Answer» 1. In human beings during metabolic activities many waste products like water, nitrogenous compounds like ammonia, urea, uric acid, bile pigments, excess salts, etc. the toxic wastes are produced. 2. To excrete all these waste materials in human beings there is an excretory system consisting of a pair of kidneys, a pair of ureters, urinary bladder and urethra. 3. Each kidney is made up of more than one million nephron. These are the structural and functional units of excretory system. 4. Per day 170 litres of water is filtered by kidneys. Out of this 168.2 litres is reabsorbed. This is a wonderful mechanism. 5. Total amount of urine excreted per day is about 1.6 to 1.8 litres. 6. The kidneys have a great reserve power. If one kidney is removed due to disease or damage, the other kidney can take up the function of both the kidneys. 7. It is so amazing that the 10 cm in length, 5-6 cm in breadth and 4 cm thickness size of the kidney can do filtration of blood and can remove all the poisonous substances from the human body and keeping the organism healthy. 8. Skin is also an excretory organ responsible for elimination of wastes in the form of sweat along with various toxins.

113.

List out the things that makes you amazing in excretory system of human being.(OR) How do you appreciate the functioning of excretory system of human being?

Answer»

1. In human beings during metabolic activities many waste products like water, nitrogenous compounds like ammonia, urea, uric acid, bile pigments, excess salts, etc. the toxic wastes are produced.

2. To excrete all these waste materials in human beings there is an excretory system consisting of a pair of kidneys, a pair of ureters, urinary bladder and urethra.

3. Each kidney is made up of more than one million nephron. These are the structural and functional units of excretory system.

4. Per day 170 litres of water is filtered by kidneys. Out of this 168.2 litres is reabsorbed. This is a wonderful mechanism.

5. Total amount of urine excreted per day is about 1.6 to 1.8 litres.

6. The kidneys have a great reserve power. If one kidney is removed due to disease or damage, the other kidney can take up the function of both the kidneys.

7. It is so amazing that the 10 cm in length, 5-6 cm in breadth and 4 cm thickness size of the kidney can do filtration of blood and can remove all the poisonous substances from the human body and keeping the organism healthy.

8. Skin is also an excretory organ responsible for elimination of wastes in the form of sweat along with various toxins.

Discussion

114.	What is Pelvis?
Answer» Pelvis: It is a funnel-like dilated proximal part of the ureter in the kidney. It is the point of convergence of two or three major calyces.

Discussion

115.	What does distensible mean?
Answer» Distensible: Able to stretch and expand.

Discussion

116.	What is Peristalsis?
Answer» Peristalsis: The involuntary wave-like muscular movement in the alimentary canal or ureter.

Discussion

117.	Define Amber color.
Answer» Amber color: It is a pure chroma color, located on the color wheel midway between yellow and orange.

Discussion

118.	What does sphincter mean?
Answer» Sphincter: A ring of muscle that contracts to close an opening.

Discussion

119.	Role of Urethra.
Answer» Urethra: It is a tube that takes urine from the urinary bladder to the outside.

Discussion

120.	Identify correct sentence given below: A) Right kidney – slightly lower than left kidney B) Right kidney – slightly higher than left kidneyC) Right kidney – left kidney are same height D) Right kidney is nearer to vertebral column than left kidney
Answer» A) Right kidney – slightly lower than left kidney

Discussion

121.	Consider the following. a) Urethra is 4 cm long in femalesb) Urethra is 20 cm in male A) Both a & b are true B) a is true, b is false C) a is false, b is true D) Both a & b are false
Answer» A) Both a & b are true

Discussion

122.	The medulla of kidney is divided into a few conical tissue masses called ………
Answer» The medulla of kidney is divided into a few conical tissue masses called Renal pyramids.

Discussion

123.	The order of excretory organs:A) i – Blood vessel, ii – Kidney, iii – Ureter, iv – Urinary bladder B) i – Kidney, ii – Blood vessel, iii – Urinary bladder, iv – Ureter C) i – Blood vessel, ii – Kidney, iii – Urinary bladder, iv – Ureter D) i – Urinary bladder, ii – Ureter, iii – Kidney, iv – Blood vessel
Answer» A) i – Blood vessel, ii – Kidney, iii – Ureter, iv – Urinary bladder

Discussion

124.	Find the incorrect function of the urinary system: A) Removal of waste products from the blood stream.B) Storage and excretion of urine C) Regulation of leucocyte and platelet production D) Regulation of blood volume and indirectly blood pressure
Answer» C) Regulation of leucocyte and platelet production

Discussion

125.	Which of the following is correct path taken by urine in our body ? A) Kidney, urethra ,ureters, bladder B) Kidney, ureters,bladder, urethra C) Kidney, bladder,ureters, urethra D) Kidney, urethra ,bladder, ureters
Answer» B) Kidney, ureters,bladder, urethra

Discussion

126.	The position of the right kidney is lower than the left kidney due to the : A) Presence of adrenal gland above it B) Presence of pancreas above it C) Presence of spinal bone above it D) Presence of liver above it
Answer» D) Presence of liver above it

Discussion

127.	Part of the nephron that exists in outer zone of kidney A) Loop of the Henle B) PCT C) DCT D) Bowman’s capsule
Answer» D) Bowman’s capsule

Discussion

128.	The blood vessel which enters through hilus is ……… A) Renal artery B) Renal veinC) Adrenal vein D) Adrenal artery
Answer» A) Renal artery

Discussion

129.	If you keep an egg in the salt water , the egg will be contracted. The reason is A) exo osmosis B) endosmosis C) Pressure D) Diffusion
Answer» A) exo osmosis

Discussion

130.	The blood vessel which comes out from hilus is ……… A) Renal artery B) Afferent arteriole C) Efferent arteriole D) Renal vein
Answer» (D) Renal vein

Discussion

131.	24 hrs. protein90m.mol/L<10024 hrs creatinine2.7m.mol/L1-224 hrs.calcium305m.mol/Lup to 200Based on the above table the normal range of creatinine in the urine A) <100 mg B) 102 mg C) 1 – 2 mg D) 200 mg
Answer» Answer (C) 1 – 2 mg

Discussion

132.	Reptiles produce very little ………urine (a) Hypotonic (b) Hypertonic(c) Isotonic (d) None of the above
Answer» Reptiles produce very little Hypotonic urine

Discussion

133.	Mammals have long Henle’s loop, hence they produce ………urine. (a) Hypotonic(b) Hyperosmotic (c) Isotonic (d) None of the above
Answer» (b) Hyperosmotic

Discussion

134.	Write a short note on urinary tract infection?
Answer» Female’s urethra is very short and its external opening is close to the anal opening, hence improper toilet habits can easily carry faecal bacteria into the urethra. The urethral mucosa is continuous with the urinary tract and the inflammation of the urethra (urethritis) can ascend the tract to cause bladder inflammation (cystitis) or even renal inflammation (pyelitis or pyelonephritis). Symptoms include dysuria (painful urination), urinary urgency, fever and sometimes cloudy or blood tinged urine. When the kidneys are inflammed, back pain and severe headache often occur. Most urinary tract infections can be treated by antibiotics.

134.

Write a short note on urinary tract infection?

Answer»

Female’s urethra is very short and its external opening is close to the anal opening, hence improper toilet habits can easily carry faecal bacteria into the urethra. The urethral mucosa is continuous with the urinary tract and the inflammation of the urethra (urethritis) can ascend the tract to cause bladder inflammation (cystitis) or even renal inflammation (pyelitis or pyelonephritis).

Symptoms include dysuria (painful urination), urinary urgency, fever and sometimes cloudy or blood tinged urine. When the kidneys are inflammed, back pain and severe headache often occur. Most urinary tract infections can be treated by antibiotics.

Discussion

135.	Identify the following structures and explain their significance in renal physiology? 1. Juxtaglomerular apparatus 2. Podocytes 3. Sphincters in the bladder 4. Renal cortex
Answer» 1. Juxtaglomerular apparatus: Juxtaglomerular apparatus is a specialized tissue in the afferent arteriole of the nephron that consists of macula densa and granular cells. The macula densa cells sense distal tubular flow and affect afferent arteriole diameter. The granular cells secrete an enzyme called renin. It plays an important role in reabsorption of water, Na⁺ and excretion of K⁺ . 2. Podocytes: The visceral layer of the Bowman’s capsule is made up of epithelial cells called podocytes. The podocytes end in foot processes which cling to the basement membrane of the glomerulus. The openings between the foot processes are called filtration slits. It is important for glomerular filtration. 3. Sphincters in the bladders: Sphincter muscles in the bladder controls the flow of urine from the bladder. When urinary bladder is filled with urine, it stretches and stimulates the central nervous system through the sensory neurons of the parasympathetic nervous system and brings about contraction of the bladder. Simultaneously, somatic motor neurons induce the sphincters to close. Smooth muscles contracts resulting in the opening of the internal sphincters passively and relaxing the external sphincter. When the stimulatory and inhibitory controls exceed the threshold, the sphincter opens and the urine is expelled out. 4. Renal cortex: The outer portion of the kidney is the renal cortex. It contains renal corpuscles and the proximal and distal tubules. It is thin and fibrous.

135.

Identify the following structures and explain their significance in renal physiology? 1. Juxtaglomerular apparatus 2. Podocytes 3. Sphincters in the bladder 4. Renal cortex

Answer»

1. Juxtaglomerular apparatus: Juxtaglomerular apparatus is a specialized tissue in the afferent arteriole of the nephron that consists of macula densa and granular cells. The macula densa cells sense distal tubular flow and affect afferent arteriole diameter. The granular cells secrete an enzyme called renin. It plays an important role in reabsorption of water, Na⁺ and excretion of K⁺ .

2. Podocytes: The visceral layer of the Bowman’s capsule is made up of epithelial cells called podocytes. The podocytes end in foot processes which cling to the basement membrane of the glomerulus. The openings between the foot processes are called filtration slits. It is important for glomerular filtration.

3. Sphincters in the bladders: Sphincter muscles in the bladder controls the flow of urine from the bladder. When urinary bladder is filled with urine, it stretches and stimulates the central nervous system through the sensory neurons of the parasympathetic nervous system and brings about contraction of the bladder.

Simultaneously, somatic motor neurons induce the sphincters to close. Smooth muscles contracts resulting in the opening of the internal sphincters passively and relaxing the external sphincter. When the stimulatory and inhibitory controls exceed the threshold, the sphincter opens and the urine is expelled out.

4. Renal cortex: The outer portion of the kidney is the renal cortex. It contains renal corpuscles and the proximal and distal tubules. It is thin and fibrous.

Discussion

136.	Which of the following pigment is not formed in the liver ? A) Bilirubin B) Biliverdin C) Urochrome D) Haemoglobin
Answer» (D) Haemoglobin

Discussion

137.	What are the uses of Tannins?
Answer» Tannins are used in tanning of leather and in medicines.

Discussion

138.	Observe the following table and answer the questions given below.AlkaloidName of the plantUsesQuinineCinchonaAnti malarial drugNicotine MorphineTobacco Opium Pesticides Pain killerPyrethroidsChrysanthemum speciesInsecticidesi) Which alkaloid we get from the fruit, is used as pain killer?ii) From which part of the plant do we get Quinine?
Answer» i) Morphine ii) Bark of Cinchona

138.

Observe the following table and answer the questions given below.AlkaloidName of the plantUsesQuinineCinchonaAnti malarial drugNicotine MorphineTobacco Opium Pesticides Pain killerPyrethroidsChrysanthemum speciesInsecticidesi) Which alkaloid we get from the fruit, is used as pain killer?ii) From which part of the plant do we get Quinine?

Answer»

i) Morphine

ii) Bark of Cinchona

Discussion

139.	What happens if both kidneys fail completely?
Answer» 1. Complete and irreversible kidney failure is called End Stage Renal Disease (ESRD). 2. If kidneys stops working completely, our body is filled with extra water and waste products. 3. This condition is called UREMIA. 4. Our hands or feet may swell. We may feel tired and weak because our body needs clean blood to function properly. 5. The solution to this problem is either dialysis or kidney transplantation.

139.

What happens if both kidneys fail completely?

Answer»

1. Complete and irreversible kidney failure is called End Stage Renal Disease (ESRD).

2. If kidneys stops working completely, our body is filled with extra water and waste products.

3. This condition is called UREMIA.

4. Our hands or feet may swell. We may feel tired and weak because our body needs clean blood to function properly.

5. The solution to this problem is either dialysis or kidney transplantation.

Discussion

140.	Excretory organs in mollusca A) Green glandsB) Malpighian tubules C) Metanephridia D) Kidneys
Answer» (C) Metanephridia

Discussion

141.	What are the substances present in urine?
Answer» Protein, Creatinine, Calcium, Phosphorous, Uric acid, Sodium, Potassium are the sub-stances present in urine.

Discussion

142.	What happens if harmful products are not removed from our body every day?
Answer» If harmful products are not removed from our body they get accumulated in the body and becomes toxic. This leads to the death of the person.

Discussion

143.	What are the materials needed to be removed from our body?
Answer» Carbon dioxide, water and nitrogenous compounds such as ammonia, urea and uric acid are the waste materials needed to be removed from our body.

Discussion

144.	The animals that excrete urea are called ………
Answer» The animals that excrete urea are called Ureoteles.

Discussion

145.	Reptiles, birds, land snails and insects excrete ……(a) Ammonia (b) Urea (c) Uric (d) purines
Answer» Reptiles, birds, land snails and insects excrete uric acid.

Discussion

146.	Weeds and some wild plants are not eaten by insects, pests and animals because A) Their leaves are very small B) These are not attractive C) The plants may contain toxic chemicals and unpleasant to taste D) All the above
Answer» C) The plants may contain toxic chemicals and unpleasant to taste

Discussion

147.	Tears are ……… A) Involuntary fluid B) Secretion C) Excretion D) Water
Answer» Tears are Excretion

Discussion

148.	What may be the feeling of a doctor while transplanting the organs?
Answer» Doctor is also a human being, he predicts that the transplantation becomes a success.

Discussion

149.	What might be the feeling of the father H.V. Shiva Kumar father of Yaswanth Kumar for donating the organs of his son?
Answer» The father might have thought that his son can live even after his death in some other people who are in need for the suitable organs. We can appreciate father’s humanity.

Discussion

150.	What are the organs that can be transplanted from brain dead patients?
Answer» The organs that can be transplanted from brain dead patients are kidney, liver, heart, lungs, pancreas, skin, bone, intestines and eyes (cornea).

Discussion

Explore topic-wise InterviewSolutions in .

Look at the picture and answer the questions, (label bottle on left as X and bottle on right as Y)The above is a procedure of haemodialysis in a hospital. i) What are the liquids X and Y, in the picture? ii) What is the purpose of this procedure and for whom is it needed?

What is the storage capacity of urinary bladder?

The method through which excessive water is released out along with transpiration is ............A) Photosynthesis B) Guttation C) Formation of bark D) Respiration

The alkaloid which stimulates the nervous system is A) Nimbin B) Caffeine C) Pyrethroid D) Quinine

Which flowers and fruits are used to extract sedative scopalamine?

Find the odd one out. A) Carbohydrate B) Protein C) Nimbin D) Fat

Which of the following is catabolic activity ? A) PhotosynthesisB) Respiration C) Excretion D) Metabolic activities

Datura has ……… A) Nimbin B) Pyrethroids C) Scopalamine D) Quinine

What is not really concerned with excretion given below ? A) To send CO2 out B) Defecation C) Sweat D) to remove urea

Short note on Willem Johan Kolff.

List out the things that makes you amazing in excretory system of human being.(OR) How do you appreciate the functioning of excretory system of human being?

What is Pelvis?

What does distensible mean?

What is Peristalsis?

Define Amber color.

What does sphincter mean?

Role of Urethra.

Identify correct sentence given below: A) Right kidney – slightly lower than left kidney B) Right kidney – slightly higher than left kidneyC) Right kidney – left kidney are same height D) Right kidney is nearer to vertebral column than left kidney

Consider the following. a) Urethra is 4 cm long in femalesb) Urethra is 20 cm in male A) Both a &amp; b are true B) a is true, b is false C) a is false, b is true D) Both a &amp; b are false

The medulla of kidney is divided into a few conical tissue masses called ………

Find the incorrect function of the urinary system: A) Removal of waste products from the blood stream.B) Storage and excretion of urine C) Regulation of leucocyte and platelet production D) Regulation of blood volume and indirectly blood pressure

Which of the following is correct path taken by urine in our body ? A) Kidney, urethra ,ureters, bladder B) Kidney, ureters,bladder, urethra C) Kidney, bladder,ureters, urethra D) Kidney, urethra ,bladder, ureters

The position of the right kidney is lower than the left kidney due to the : A) Presence of adrenal gland above it B) Presence of pancreas above it C) Presence of spinal bone above it D) Presence of liver above it

Part of the nephron that exists in outer zone of kidney A) Loop of the Henle B) PCT C) DCT D) Bowman’s capsule

The blood vessel which enters through hilus is ……… A) Renal artery B) Renal veinC) Adrenal vein D) Adrenal artery

If you keep an egg in the salt water , the egg will be contracted. The reason is A) exo osmosis B) endosmosis C) Pressure D) Diffusion

The blood vessel which comes out from hilus is ……… A) Renal artery B) Afferent arteriole C) Efferent arteriole D) Renal vein

24 hrs. protein90m.mol/L&lt;10024 hrs creatinine2.7m.mol/L1-224 hrs.calcium305m.mol/Lup to 200Based on the above table the normal range of creatinine in the urine A) &lt;100 mg B) 102 mg C) 1 – 2 mg D) 200 mg

Reptiles produce very little ………urine (a) Hypotonic (b) Hypertonic(c) Isotonic (d) None of the above

Mammals have long Henle’s loop, hence they produce ………urine. (a) Hypotonic(b) Hyperosmotic (c) Isotonic (d) None of the above

Write a short note on urinary tract infection?

Identify the following structures and explain their significance in renal physiology? 1. Juxtaglomerular apparatus 2. Podocytes 3. Sphincters in the bladder 4. Renal cortex

Which of the following pigment is not formed in the liver ? A) Bilirubin B) Biliverdin C) Urochrome D) Haemoglobin

What are the uses of Tannins?

What happens if both kidneys fail completely?

Excretory organs in mollusca A) Green glandsB) Malpighian tubules C) Metanephridia D) Kidneys

What are the substances present in urine?

What happens if harmful products are not removed from our body every day?

What are the materials needed to be removed from our body?

The animals that excrete urea are called ………

Reptiles, birds, land snails and insects excrete ……(a) Ammonia (b) Urea (c) Uric (d) purines

Weeds and some wild plants are not eaten by insects, pests and animals because A) Their leaves are very small B) These are not attractive C) The plants may contain toxic chemicals and unpleasant to taste D) All the above

Tears are ……… A) Involuntary fluid B) Secretion C) Excretion D) Water

What may be the feeling of a doctor while transplanting the organs?

What might be the feeling of the father H.V. Shiva Kumar father of Yaswanth Kumar for donating the organs of his son?

What are the organs that can be transplanted from brain dead patients?

Consider the following. a) Urethra is 4 cm long in femalesb) Urethra is 20 cm in male A) Both a & b are true B) a is true, b is false C) a is false, b is true D) Both a & b are false

24 hrs. protein90m.mol/L<10024 hrs creatinine2.7m.mol/L1-224 hrs.calcium305m.mol/Lup to 200Based on the above table the normal range of creatinine in the urine A) <100 mg B) 102 mg C) 1 – 2 mg D) 200 mg