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31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2


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25 Questions MCQ Test Biology Class 11 | 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 for NEET 2022 is part of Biology Class 11 preparation. The 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 questions and answers have been prepared according to the NEET exam syllabus.The 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 below.
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31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 1

Reabsorption of useful substances from glomerular filtrate occurs in [1989]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 1

From Bowman's capsule, glomer ular filtrate enters the proximal convolute tubule. Most of the useful substances like Glucose (all), Amino Acids (all), most of the inorganic ions (Na+, K+, Cl etc), most of the important buffer bicarbonates are reabsorbed in Proximal Convoluted Tubule. Cells are specially adaptive for absorption having numerous microvilli & mitochondria (to provide energy for active absorption).

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 2

Brush border is characteristic of [1990]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 2

Proximal convoluted tubule (PCT) is lined by simple cuboidal brush border epithelium. The brush border epithelium increases the surface area for reabsorption. Nearly all of the essential nutrients, and 70-80 percent of electrolytes. Hence brush border is characteristic of the proximal convoluted tubule.
So, the correct answer is 'Proximal convoluted tubule'.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 3

Proximal and distal convoluted tubules are parts of [1990]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 3

Nephron is the excretory unit of human excretory system. Each nephron has a Bowman’s Capsule, a Proximal Convoluted Tubule (PCT), Loop of Henle (Descending & Ascending limbs) and Distal Convoluted Tubule (DCT) which then enter into collecting duct.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 4

Under normal conditions which one is completely reabsorbed in the renal tubule? [1991]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 4

The cells of Proximal Convoluted Tubule (PCT) reabsorb entire glucose, amino acids, most of the inorganic ions (Na+, K+, Cl)  much of the water as well as some urea. Glucose is reabsorbed actively and most effectively.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 5

Nitrogenous waste products are eliminated mainly as [1991]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 5

Ammonia molecules are small and very soluble in water. In ammonotelic animals large amount of H2O is required to eliminate ammonia from the body, so it is found in aquatic animals like tadpole of frog. When tadpole becomes a mature frog it acquires mainly ureotelism.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 6

Glucose is taken back from glomerular filtrate through [1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 6

Active transport.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 7

Hair present in the skin are [1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 7

Each hair is present in a tubular pit called hair follicle. Living cells are only present at the base of hair known as hair papilla, rest of the hair is dead and divisible into outer cuticle, middle cortex & inner medulla.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 8

Part not belonging to uriniferous tubule is

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 8

The uriniferous tubule or the kidney tubule is a fine, long, convoluted tubule that is involved in excretory functions. This tubule basically conveys urine from the glomerulus to the renal pelvis. A large amount of water and salts are reabsorbed during the passage of urine through it.

The nephrons along with collecting ducts are called as uriniferous tubule.The body of the nephron is divided into  Bowman's capsule, PCT, Henle's loop and DCT.

So, the correct answer is 'Glomerulus'.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 9

If kidney fail to reabsorb water, the effect on tissue would [1994]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 9

If kidneys fail to reabsorb water the urine will be diluted causing polyuria (frequent urination). Then the body tissues get dehydrated & the cell will loose water content & shrink.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 10

Uric acid is nitrogenous waste in [1994]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 10

The excretion of uric acidis called uricotelism. The excretion of uric acid is advantageous for those animals which have to conserve water for their survival like birds and lizards.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 11

A patient suffering from cholera is given saline drip because [1996, 2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 11

In patients affected with cholera, a cholera enterotoxin is produced which results in increased synthesis of intracellular cyclic AMP, which in turn increases the  permeability of intestinal mucosa, leading to secretion of fluid throughout the small intestine. Hence the patient is given saline drip whereby Na+ ions restore the osmotic balance by retaining water in the body.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 12

In Or nithine cycle, which one pair of the following wastes are removed from the blood?[1996]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 12

In  ureotelic animals urea is formed from ammonia  by Ornithine cycle. 

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 13

In ureotelic animals, urea is formed by the [1997, 2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 13

In ureotelic animals urea is formed by Ornithine cycle. Urea is formed in the liver where two molecules of ammonia combine with one molecule of CO2 in presence of Ornithine, citrulline, arginine and enzyme arginase. This is called Ornithine cycle.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 14

The basic functional unit of the human kidney is[1997]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 14

Nephridia are the excretor y str uctures of annelids. Henle's loop is a part of the nephron or uriniferous tubule of the vertebrate kidney.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 15

Solenocytes are the main excretory structures in[1998]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 15

Solenocytes or flame cells or protonephridia are excretory organs in Platyhelminthes (Flatworms). They excrete ammonia. In Annelids excretory structure are nephridia. In Molluscs sac like kidneys are excretory. In Echinodermata nitrogenous wastes are excreted through gills.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 16

In the renal tubules the permeability of the distal convoluted tubule and collecting duct to water is controlled by [1999]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 16

Growth hormone, released by the anterior lobe of pituitary brings about body growth by synthesis and deposition of proteins in tissues. Renin secreted by special cells in kidneys regulates blood pressure. Aldosterone reduces Na+ elimination by helping active reabsorption from the nephric filtrate.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 17

Formation of concentrated (hyperosmotic) urine in vertebrates generally depends on [2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 17

Henle’s loop is involved in osmoregulation and concentrating  urine. Thus producing a hypertonic urine.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 18

The enteronephric nephridia of earthworm are concerned with [2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 18

The nephridia are the excretory organs. The nephridia in earthworm are  – Septal nephridia, Pharyngeal nephridia and Integumentary nephridia. The septal nephridia do not discharge excretory fluid to the exterior rather it pour them into the intestine. Hence these are also called Enteronephric nephridia.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 19

Which one of the following is a matching pair?[2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 19

Sweat  regulates body temperature. Sweating also called perspiration or sometimes transpiration is the production and evaporation of a fluid, consisting primarily of water as well as a smaller amount of sodium chloride the main constituent of “table salt”, that is excreted by the sweat glands in the skin of mammals.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 20

In Hydra waste material of food digestion and nitrogenous waste material removed from

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 20

Hydra being a coelenterate, has blind sac body plan. It has only one mouth which serves as the opening for ingestion and waste elimination besides diffusion across body wall. 

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 21

If Henle's loop were absent from mammalian nephron, which of the following is to be expected? [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 21

Henle’s loop is associated with  the concentration of urine and production of hypertonic urine.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 22

When a fresh-water protozoan possessing a contractile vacuole, is placed in a glass containing marine water, the vacuole will [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 22

Fresh water protozoans live in hypotonic solution so, for regulation of excess of water which comes in the protoplasm through the process of endosmosis, contractile vacuoles have developed, When these protozoans are placed in marine water i.e., hypertonic water, the contractile vacuoles become disappear because the process of endosmosis does not happen and thus, water does not come in the protoplasm.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 23

Uricotelism is found in [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 23

In uricotelic animals nitrogenous waste is eliminated in the form of uric acid. Ammonotelism is seen in aquatic animals wherein nitrogenous wastes is eliminated in the form of ammonia eg. Fishes, tadpole. Ureotelism is observed in human beings in which nitogenous waste is eliminated as urea.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 24

A terrestrial animal must be able to [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 24

Terrestial animals have limited access to water. Hence they have to secrete hypertonic urine and conserve water. Choices (c) and (d) are characteristics of marine animals who need to overcome the problem of preventing entry of salts and loss of water. Choice (a) is characteristic of fresh water animals.

31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 25

A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of: [2005]

Detailed Solution for 31 Years NEET Previous Year Questions: Excretory Products & Their Elimination - 2 - Question 25

If a person is undergoing prolonged fasting, his urine will be found to contain abnormal quantities of ketones. During fasting energy is obtained by the oxidation of reserved fats. As a result of fatty acid oxidation large amount of ketone bodies are produced such as acetoacetate, (3-hydroxybutyrate and acetone.

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