Biology MCQS

291. True roots are absent in:
(A) Ferns
(B) Bryophytes
(C) Gymnosperms
(D) Angiosperms)

292. Removal or degradation of environmental pollutants or toxic materials by living organisms is called:
(A) Integrated disease management
(B) Hydroponic culture technique
(C) Pasteurization
(D) Bioremediation)

293. The mechanism for ATP synthesis is:
(A) Chemosynthesis
(B) Photosynthesis
(C) Phosphorylation)
(D) Chemiosmosis

294. Which of the following is not a viral disease?
(A) Cowpox
(B) Mumps
(C) Tetanus
(D) Smallpox)

295. Protein factory is:
(A) Nucleus
(B) Ribosome)
(C) Golgi complex
(D) Centriole

296. What is the mode of transmission of Hepatitis virus?
(A) Aerosol
(B) Parenteral (via blood))
(C) Skin penetration
(D) Unknown

297. Which of the following is the abiotic component of the ecosystem?
(A) Producers
(B) Herbivores
(C) Carnivores
(D) Oxygen)

298. Body balance of water, salts, temperature, and glucose is termed as:
(A) Excretion
(B) Tubular secretion
(C) Homeostasis)
(D) Re-absorption

299. The tube between the kidney and urinary bladder is:
(A) Urethra
(B) Ureter)
(C) Renal tubule
(D) Nephron

300. Which of the following organs is responsible for filtering the blood?
(A) Kidney)
(B) Liver
(C) Lungs
(D) Stomach