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NEET • BIOLOGY • EXCRETORY PRODUCTS AND THEIR ELIMINATION

Excretory products and their elimination practice · Easy

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Showing 1-30 of 105 questions

1 Easy

1 of 105

Remembering +4 | -1

The shape of vasa recta is

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Correct option: B

U-shaped

Option B is correct because the vasa recta, which surrounds the loop of Henle, has a U-shape.

2 Easy

2 of 105

Remembering +4 | -1

Ornithine cycle refers to the sequence of biochemical reactions taking place in the

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Correct option: B

Liver

Option B (Liver) is correct because the ornithine cycle, which converts ammonia to urea, occurs in the liver.

3 Easy

3 of 105

Remembering +4 | -1

The expulsion of urine from the urinary bladder is called

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Correct option: B

Micturition

Option B (Micturition) is correct because micturition is the process of expelling urine from the urinary bladder.

4 Easy

4 of 105

Remembering +4 | -1

PCT is lined by

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Correct option: A

Cuboidal epithelium

Option A (Cuboidal epithelium) is correct because PCT (Proximal Convoluted Tubule) is lined by cuboidal epithelium with brush border to increase the surface area for reabsorption.

5 Easy

5 of 105

Understanding +4 | -1

Glomerular filtrate will not normally contain which of the following chemical?

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Correct option: A

Glucose

Option C is correct because proteins are generally too large to pass through the glomerular filtration membrane under normal conditions.

6 Easy

6 of 105

Understanding +4 | -1

Find the correct option regarding mechanism of urine formation in man.

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Correct option: C

Tubular secretion takes place in the PCT

Option C is correct because tubular secretion, the process of adding substances to the filtrate, occurs primarily in the proximal convoluted tubule (PCT).

7 Easy

7 of 105

Understanding +4 | -1

Which is highly harmful and may lead to kidney failure?

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Correct option: A

Uremia

Option A (Uremia) is correct because uremia, the accumulation of urea in the blood, is highly harmful and can lead to kidney failure.

8 Easy

8 of 105

Remembering +4 | -1

Angiotensin-II activates the ….A…. and release ……B……
Choose the correct option for A and B to complete the given statement

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Correct option: A

A-adrenal cortex; B-aldosterone

Option A is correct because Angiotensin-II activates the adrenal cortex, leading to the release of aldosterone.

9 Easy

9 of 105

Remembering +4 | -1

Uric acid is the chief nitrogenous excretory component of

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Correct option: C

Cockroach

Option C (Cockroach) is correct because cockroaches, being insects, primarily excrete uric acid as their main nitrogenous waste product.

10 Easy

10 of 105

Understanding +4 | -1

Which of the following pairs is wrong?

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Correct option: B

ammonotelic - insects

Option B (ammonotelic - insects) is wrong because insects are primarily uricotelic, excreting uric acid to conserve water, not ammonia.

11 Easy

11 of 105

Understanding +4 | -1

In which one of the following organism's its excretory organs are correctly stated

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Correct option: B

Earth warm – Pharyngeal, integumentary and septal nephridia

Option B is correct because it accurately lists the excretory organs of earthworms: pharyngeal, integumentary, and septal nephridia.

12 Easy

12 of 105

Understanding +4 | -1

Assertion: Most of the secretion of liver is pass out along with faecal matter
Reason: Bile juice is secreted in digestive tract.

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Correct option: A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

Option A (If both the assertion and the reason are true and the reason is a correct explanation of the assertion) is correct because the liver secretes bile into the digestive tract, and much of what the liver processes is eventually eliminated with feces.

13 Easy

13 of 105

Remembering +4 | -1

At which place we initially used the term ‘urine’ for filtrate?

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Correct option: D

collecting duct

Option D (collecting duct) is correct because the final filtrate in the collecting duct is what we commonly refer to as urine.

14 Easy

14 of 105

Remembering +4 | -1

RASS secretes which of the following hormone?

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Correct option: A

Mineralocorticoids

Option A is correct because the RAAS system ultimately leads to the secretion of mineralocorticoids (aldosterone).

15 Easy

15 of 105

Analyzing +4 | -1

Assertion (A): The stretch receptors on the wall of urinary bladder do not signal the CNS when the urinary
bladder fills with urine
Reason (R): Micturition is a voluntary process

View answer and explanation

Correct option: D

If A is false, but R is true

Option D (If A is false, but R is true) is correct because the stretch receptors DO signal the CNS, and micturition is indeed a voluntary process to some extent.

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16 Easy

16 of 105

Remembering +4 | -1

Glomerular filtrate is

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Correct option: A

Blood minus blood corpuscles and plasma protein

Option A (Blood minus blood corpuscles and plasma protein) is correct because glomerular filtrate is blood plasma without cells and large proteins.

17 Easy

17 of 105

Understanding +4 | -1

Choose the false statement

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Correct option: D

Tubular secretion is not very important step in urine formation

Option D is correct because tubular secretion is a very important step in urine formation, not unimportant.

18 Easy

18 of 105

Remembering +4 | -1

Average pH of human urine is

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Correct option: A

Option A (6) is correct because the average pH of human urine is slightly acidic, around 6.

19 Easy

19 of 105

Understanding +4 | -1

Which of the following is responsible for excretion of dilute urine?

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Correct option: B

Less secretion of vasopressin

Option B (Less secretion of vasopressin) is correct because vasopressin (ADH) promotes water reabsorption, so less secretion leads to dilute urine.

20 Easy

20 of 105

Understanding +4 | -1

The nature of cortical nephrons having

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Correct option: A

Loop of Henle is too short & extends little into the medulla

Option A (Loop of Henle is too short & extends little into the medulla) is correct because cortical nephrons are characterized by their short loops of Henle that do not penetrate deeply into the renal medulla.

21 Easy

21 of 105

Understanding +4 | -1

Select the correct order of toxicity of the following chemicals
A) Ammonia

\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,

B) Urea

\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,

C) Uric acid

View answer and explanation

Correct option: A

\mathrm{A}\,\mathrm{ > }\,\mathrm{B}\,\mathrm{ > }\,\mathrm{C}

Option A (A > B > C) is correct because ammonia is the most toxic, followed by urea, and then uric acid, based on their nitrogen content and metabolic pathways.

22 Easy

22 of 105

Understanding +4 | -1

Which one of the following statements is false?

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Correct option: B

Presence of urea in urine is glycosuria

Option B (Presence of urea in urine is glycosuria) is false because glycosuria refers to the presence of glucose in urine, not urea.

23 Easy

23 of 105

Remembering +4 | -1

Osmoregulation is the function of

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Correct option: B

ADH

Option B is correct because ADH (Antidiuretic hormone) regulates water reabsorption in the kidneys, thus controlling osmolarity.

24 Easy

24 of 105

Understanding +4 | -1

Mammals have the ability to produce

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Correct option: B

Hypertonic urine

Option B (Hypertonic urine) is correct because mammals have the ability to concentrate their urine, producing urine that is more concentrated (hypertonic) than their blood plasma.

25 Easy

25 of 105

Understanding +4 | -1

Primary function of sweat in humans is

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Correct option: B

Cooling of skin

Option B (Cooling of skin) is correct because the primary function of sweat is thermoregulation through evaporative cooling.

26 Easy

26 of 105

Remembering +4 | -1

The living steady state has a self-regulatory mechanism which is known as

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Correct option: D

Homeostasis

Option D (Homeostasis) is correct because homeostasis is the self-regulatory mechanism that maintains a stable internal environment in living organisms.

27 Easy

27 of 105

Remembering +4 | -1

Metabolic wastes containing nitrogen in our body are due to

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Correct option: B

proteins

Option B (proteins) is correct because the breakdown of proteins results in nitrogenous waste products such as urea, ammonia, and creatinine.

28 Easy

28 of 105

Understanding +4 | -1

The waste products produced in man which need excretion are?

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Correct option: D

All of these

Option D (All of these) is correct because humans need to excrete carbon dioxide, urea and salts, and excess water to maintain homeostasis.

29 Easy

29 of 105

Understanding +4 | -1

Assertion: Uraemia is harmful condition
Reason: Uraemia may lead to kidney failure

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Correct option: A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

Option A is correct because both the assertion (Uraemia is harmful condition) and the reason (Uraemia may lead to kidney failure) are true, and the reason is a correct explanation of the assertion.

30 Easy

30 of 105

Remembering +4 | -1

All Bowman’s capsules of the kidney are found in

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Correct option: C

Cortex

Option C (Cortex) is correct because Bowman's capsules are located in the cortex of the kidney.

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Key Takeaways

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