M C Q s D r i v e

Biology 1525 MCQs [All-Courses]

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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

Which of the following is a sentimentally arranged excretory system?
A Protonephridium
B Metanephridium
C Malpighian tubules
D Nephrons
Correct Answer: Metanephridium
The distal blind end of the malpighian tubules bathes freely in____________?
A Digestive tract
B Intestines
C Haemocoel
D Coelom
Correct Answer: Haemocoel
Hydra has no specialized excretory system because:
A It does not produce waste material
B Due to absence of mesoderm
C The whole body cells are in contact with water
D It has pseudocoelom.
Correct Answer: The whole body cells are in contact with water
In animals excess of nitrogen is excreted primarily in form of___________?
A Creatinine
B Trimethyamine oxide
C Pyrimidine
D Ammonia
Correct Answer: Ammonia
In plants, which of the following is a waste product produced both during photosynthesis and respiration?
A CO2
B H2O
C O2
D Both A and B
Correct Answer: H2O
Which of the following treatment will be administered first in a newly diagnosed renal failure patient?
A Renal transplant
B Peritoneal Dialysis
C Lithotripsy
D Hemodialysis
Correct Answer: Hemodialysis
Which of the following kidney stones are most common?
A Calcium oxalate
B Calcium phosphate
C Uric acid
D All of these
Correct Answer: Calcium oxalate
Which of the following nephrons play important role in production of concentrated urine?
A Crotical
B Medullary
C Juxtramedullary
D None of these
Correct Answer: Juxtramedullary
Which of the following excretory structure is associated with gut of the organism?
A Protonephridium
B Metanephridium
C Malpighian tubules
D Nephrons
Correct Answer: Malpighian tubules
The main nitrogenous waste formed in the body of earthworm is/are___________?
A Ammonia
B Urea
C Uric acid
D Trimethylamine oxide
Correct Answer: Urea