EXCRETION (Govt Jobs MCQ)

-
EXCRETION (ADRE)


EXCRETION 
Excretion is the biological process by which an organism eliminates waste products and toxins from its body. This is essential for maintaining homeostasis and preventing damage to the organism. In humans and other animals, excretion primarily involves the removal of metabolic waste products such as carbon dioxide, urea, and salts. The main excretory organs include:

1. **Kidneys**: Filter blood to produce urine, removing urea, excess salts, and water.
2. **Lungs**: Expel carbon dioxide and water vapor produced during respiration.
3. **Skin**: Excretes sweat, which contains water, salts, and some urea.
4. **Liver**: Converts toxic substances into less harmful compounds, some of which are excreted in bile.

Other organisms have different mechanisms and structures for excretion, but the fundamental purpose is the same: to maintain a stable internal environment by removing harmful byproducts of metabolism.


Here excretion related some MCQ 

1. Which organ is primarily responsible for the filtration of blood?
   - A) Liver
   - B) Kidney
   - C) Lung
   - D) Heart
   - Answer: B) Kidney

2.. Urea is primarily produced in which organ?
   - A) Kidney
   - B) Liver
   - C) Pancreas
   - D) Stomach
   - Answer: B) Liver

3. Which substance is NOT typically found in urine?
   - A) Glucose
   - B) Urea
   - C) Water
   - D) Salts
   - Answer: A) Glucose

4.. Which hormone regulates the amount of water reabsorbed by the kidneys?
   - A) Insulin
   - B) Adrenaline
   - C) Antidiuretic hormone (ADH)
   - D) Thyroxine
   - Answer: C) Antidiuretic hormone (ADH)

5. Which part of the nephron is responsible for the reabsorption of water?
   - A) Bowman's capsule
   - B) Proximal convoluted tubule
   - C) Loop of Henle
   - D) Distal convoluted tubule
   - Answer: C) Loop of Henle

6. Which structure stores urine before it is excreted from the body?
   - A) Kidney
   - B) Ureter
   - C) Bladder
   - D) Urethra
   - Answer: C) Bladder

7.. What is the primary nitrogenous waste in human urine?
    - A) Ammonia
    - B) Urea
    - C) Uric acid
    - D) Creatinine
    - *Answer: B) Urea

8. Which of the following is NOT a component of the excretory system?
    - A) Kidneys
    - B) Lungs
    - C) Skin
    - D) Spleen
    - Answer: D) Spleen

9..How many ureters does a human normally have?
    - A) One
    - B) Two
    - C) Three
    - D) Four
    - Answer: B) Two


12.. Which blood vessel carries blood to the kidneys?
    - A) Renal artery
    - B) Renal vein
    - C) Pulmonary artery
    - D) Hepatic vein
    - **Answer: A) Renal artery**

13.. Which of the following is not excreted in significant amounts by the kidneys?
    - A) Urea
    - B) Creatinine
    - C) Bicarbonate
    - D) Bilirubin
    - Answer: D) Bilirubin

14.. The removal of metabolic waste products from the body is known as:
    - A) Digestion
    - B) Excretion
    - C) Respiration
    - D) Circulation
    - Answer: B) Excretion

15.. Which of the following does not form part of the renal corpuscle?
    - A) Bowman's capsule
    - B) Glomerulus
    - C) Loop of Henle
    - D) Afferent arteriole
    - Answer: C) Loop of Henle


Comments

Post a Comment

Popular posts from this blog

SCIENCE PART 1 ( ADRE)

-
SCIENCE PART 1  Here are 20 science multiple-choice questions (MCQs) with their answers: 1 **What is the powerhouse of the cell?**    - A) Nucleus    - B) Mitochondria    - C) Ribosome    - D) Endoplasmic reticulum    - **Answer: B) Mitochondria** 2. **What is the chemical symbol for gold?**    - A) Au    - B) Ag    - C) Go    - D) Gd    - **Answer: A) Au** 3. **What is the speed of light in a vacuum?**    - A) Approximately 300,000 km/s    - B) Approximately 150,000 km/s    - C) Approximately 400,000 km/s    - D) Approximately 200,000 km/s    - **Answer: A) Approximately 300,000 km/s** 4. **What type of bond is formed when electrons are shared between atoms?**    - A) Ionic bond    - B) Covalent bond    - C) Metalli...
Read more

SOLER SYSTEM (ADRE)

-
Image
SOLER SYSTEM MCQ Multiple-choice questions (MCQs) about the Solar System,with their answers and explanations  1. What planet is referred to as the Red Planet? A. Earth   B. Mars   C. Jupiter   D. Venus   ** Answer: B. Mars* *   **Explanation:** Mars is known as the Red Planet because of its reddish appearance, which is due to iron oxide (rust) on its surface. ### 2. What is the largest planet in our solar system? A. Earth   B. Mars   C. Jupiter   D. Saturn   ** Answer: C. Jupiter**   **Explanation:** Jupiter is the largest planet in our solar system, with a diameter of about 143,000 kilometers.  4. What is the smallest planet in our solar system? A. Mercury   B. Mars   C. Venus   D. Earth   ** Answer: A. Mercury**   **Explanation:** Mercury is the smallest planet in our solar system, with a diameter of about 4,880 kil...
Read more

10 Biology Quiz for All

-
Image
 100 Biology Quiz (Unique)  Part 1 1. **What is the basic unit of life?**  - A) Atom  - B) Molecule  - C) Cell  - D) Organism  - **Answer: C) Cell** 2. **Identify the organelle commonly referred to as the ‘powerhouse’ of the cell.  - A) Nucleus  - B) Mitochondria  - C) Endoplasmic Reticulum  - D) Golgi Apparatus  - **Answer: B) Mitochondria** 3. **Through which process do plants synthesize their own nutrients?  - A) Respiration  - B) Photosynthesis  - C) Fermentation  - D) Digestion  - **Answer: B) Photosynthesis** 4. **Which molecule carries genetic information?**  - A) Protein  - B) Carbohydrate  - C) DNA  - D) Lipid  - **Answer: C) DNA** 5. **What is the name of the process by which cells divide to form gametes?**  - A) Mitosis  - B) Meiosis  - C) Binary Fission  - D) Budding  - **Answer: B) Meiosis** 6. **Which blood cells are responsible for carryin...
Read more