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#excretory system

48 public questions tagged with this topic.

Which part of the frog’s excretory system temporarily stores urine?

The urinary bladder stores urine temporarily before it is excreted through the cloaca. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.

Which statement about the composition of urine is incorrect?

Normally, proteins and blood lls are not present in urine, as they are retained in the bloodstream. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.

The hormone that promotes sodium reabsorption in the kidneys is:

Aldosterone, a mineralocorticoid from the adrenal cortex, enhances sodium reabsorption in the distal tubules. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII)Topic: Mole concept, atomic structure, chemical formulas like H₂O, CO₂, CH₃CH₂NH₂ and periodic trends.