Download App

STD 11 - 16. Excretory product and their elimination — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 16. Excretory product and their elimination1 Mark
MCQ
A fall in glomerular filtration rate $(GFR)$ activates
  • ✓
    juxtaglomerular cells to release renin
  • B
    adrenal cortex to release aldosterone
  • C
    adrenal medulla to release adrenaline
  • D
    posterior pituitary to release vasopressin.
✓

Answer

Correct option: A.
juxtaglomerular cells to release renin
a
(a) : The amount of the filtrate formed by the kidneys per minute is called glomerular filtration rate $(GFR)$. $GFR$ in a healthy individual is approximately $125\ ml/minute$, $i.e$., $180\ litres$ per day.The kidneys have built­in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by juxtaglomerular apparatus $(JGA)$. $JGA$ is a special sensitive region formed by cellular modifications in the distal convoluted tubule and the afferent arteriole at the location of their contact. A fall in $GFR$ can activate the $JG$ cells to release renin which can stimulate the glomerular blood flow and thereby the $GFR$ come back to normal.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 11 - 16. Excretory product and their elimination→STD 11 - 16. Excretory product and their elimination — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

A plant having seeds but lacking flowers and fruits belongs to:
→
The chief function of sieve tubes is
→
Which of the following bases is present in $RNA$ in place of thymine
→
In man, blood passes from the post caval into the diastolic right atrium of the heart because of
→
Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non­matching pair.
→
Fungi show asexual reproduction by all of the following kinds of spores except
→
The type of ribosomes found inside the mitochondria is
→
The enzyme responsible for primary carboxylation in $C_{3}$-plants is
→
Transgenic plants are the ones:
→
Which joint occurs between humerus and radioulna?
→