Excretory Products and their Elimination - Online Test

Q1. In the following pictorial representation of Kreb’s Hensleit cycle, find out 1,2& 3 ?

Answer : Option B
Explaination / Solution:

Kreb’s Hensleit cycle is the sequence of chemical reaction occurring primarily in the liver that results in the production of urea. In this cycle ammonia is fist converted into citrulline along with carbon dioxide that change into arginine and finally into ornithine.

Q2.

Read the following :

i. Infants and toddlers are often under habit of bed wetting since micturition is a reflex process.
ii. Adults and grown up children can control this reflex process, voluntarily to some extent.


Answer : Option C
Explaination / Solution:

The process of release of urine is called micturition and the neural mechanism causing it is called the micturition reflex. Adults and grown up children can control the reflex process of micturition voluntarily to some extent.

Q3. All of the following organs help in excretion except :
Answer : Option B
Explaination / Solution:

Lungs help in excretion of carbon dioxide, liver help in excretion of toxic substance and skin help in removal of extra salts along with sweat. Heart is the organ that pumps the blood in body.

Q4. Urea cycle operates in :
Answer : Option A
Explaination / Solution:

Urea cycles operates in liver, where ammonia is converted into urea. Sometimes urea cycle also occurs in kidney.

Q5.

Read the following :

i. Avian kidneys have very short loops of Henle.
ii. Birds are unable to make urine as hypotonic as mammals can.


Answer : Option A
Explaination / Solution:

Avian kidneys have very short loops of Henle’s. Loops of Henle’s used in concentration of urine. Birds make urine highly hypotonic.

Q6. If kidney tissues are supplied with blood low in oxygen then :
Answer : Option C
Explaination / Solution:

If Kidney tissues are supplied with blood having low oxygen in it then tubular reabsorption get stopped as energy is required for active absorption.

Q7. Diabetes insipidus is caused due to :
Answer : Option D
Explaination / Solution:

Diabetes insipidus is rate variety of diabetes characterized by excessive thrust and excretion of large amount of urine. It is caused due to reduced secretion of antidiuretic hormone (ADH) or vasopressin hormone.

Q8. Rahul is anaemic and few days ago suffered from massive haemorrhage. Now what problems he may face :
Answer : Option D
Explaination / Solution:

If anemic person suffered from massive haemorrhage, the problem he may face includes, very low blood pressure, accumulation of wastes products in body and no glomerular filtration in kidney.

Q9. Reema is on dialysis and she is unable to conceive due to high levels of waste products in her body fluids. Her doctor can suggest her
Answer : Option A
Explaination / Solution:

When both kidney of a person get damaged and not able to filter the blood, dialysis is used to remove nitrogenous wastes. High wastes accumulation unable a woman to conceive. The ultimate solution to this problem is kidney transplant.

Q10. People with chronic kidney disease are usually affected by anemia. It happens because damaged kidney doesn’t secrete sufficient :
Answer : Option A
Explaination / Solution:

The person suffering from chronic kidney disease are usually affected by anemia. The damage kidney is not able to secrete sufficient erythropoietin in blood that help in absorption of iron.