2041. Thick, waxy & leathery cuticle around leaves is present in___________?
✅ C. Xerophytes
Option A: Hydrophytes Option B: Mesophytes Option C: Xerophytes Option D: Halophytes Correct Answer : Xerophytes Read more
Author: Sheeraz Ahmed – Page 103
2042. Which of the following animal excrete nitrogenous waste mainly as uric acid?
✅ D. Birds.
Option A: Hydra Option B: Planaria. Option C: Humans Option D: Birds. Correct Answer : Birds. Read more
2043. Which of the following openings have cilia?
✅ A. Nephrostome
Option A: Nephrostome Option B: Nephridiopore Option C: Both of these Option D: None of these Correct Answer : Nephrostome Read more
2044. In osmosis water molecules move from area of _____________ through semipermeable memberane?
✅ B. Lower solute concentration to higher solute concentration
Option A: Higher solute concentration to lower solute concentration Option B: Lower solute concentration to higher solute concentration Option C: Lower solvent concentration to higher solvent concentration Option D: All of these Correct Answer : Lower solute concentration to higher solute concentration Read more
2045. Which of the following is most toxic?
✅ A. Ammonia
Option A: Ammonia Option B: Urea Option C: Uric acid Option D: Trimethylamine oxide Correct Answer : Ammonia Read more
2046. In Urea cycle __________ ammonia molecules combine with 1 CO2 molecule to form 1 molecule of urea.
✅ B. 2
Option A: 1 Option B: 2 Option C: 3 Option D: 4 Correct Answer : 2 Read more
2047. Marine fish can keep their internal environment hypertonic with respect to the surrounding salty water by retaining.
✅ D. Trimethylamine oxide
Option A: Excessive urea which will increase their internal solute concentration and prevent body shrinkage in hypertonic environment Option B: Trimethyl alanine Option C: Ammonia Option D: Trimethylamine oxide Correct Answer : Trimethylamine oxide Read more
2048. Aquatic animals excrete nitrogenous waste commonly in the form of_____________?
✅ A. Ammonia
Option A: Ammonia Option B: Urea Option C: Uric acid Option D: Trimethylamine oxide Correct Answer : Ammonia Read more
2049. Protonephridia are present in____________?
✅ B. Flateworm
Option A: Round worms Option B: Flateworm Option C: Tape worms Option D: Segmented worms Correct Answer : Flateworm Read more
2050. Which of the following constituent is/are maximum in the filtrate that leaves proximal convoluted tubules?
✅ C. Nitrogenous waste
Option A: Glucose Option B: Amino acids Option C: Nitrogenous waste Option D: All of these Correct Answer : Nitrogenous waste Read more