The higher animals have special organs for exchange of gases as their skin is ___________ ?

✅ B. Raphe

Option A: Valve Option B: Raphe Option C: Pseudopodium Option D: Cilia or flagella Correct Answer : Raphe Read more

✅ B. seed plants

Option A: flowering plants Option B: seed plants Option C: ferns Option D: none of these Correct Answer : seed plants Read more

✅ A. Hypocalcemia

Option A: Hypocalcemia Option B: Hypercalcemia Option C: Clostridum tetani. Option D: Low O2 level Correct Answer : Hypocalcemia Read more

✅ A. Hemoglobin

Option A: Hemoglobin Option B: Enzymes Option C: Salts Option D: Other proteins Correct Answer : Hemoglobin Read more

✅ B. Niche

Option A: Autecology Option B: Niche Option C: Ecosystem Option D: Biome Correct Answer : Niche Read more

✅ C. All retroviruses

Option A: All RNA viruses Option B: All DNA viruses Option C: All retroviruses Option D: All viruses Correct Answer : All retroviruses Read more

✅ D. 1%

Option A: 20% Option B: 15% Option C: 10% Option D: 1% Correct Answer : 1% Read more

✅ A. Binary fission

Option A: Binary fission Option B: Mitosis Option C: Meiosis Option D: Conjugation Correct Answer : Binary fission Read more