Practice check: Choose the correct biology answer: which cells help defend the body against infection?

✅ C. Echinodermata

Option A: Chordata Option B: Hydra Option C: Echinodermata Option D: Hemichordata Correct Answer : Echinodermata Read more

✅ B. A molecule

Option A: An organ Option B: A molecule Option C: Tissue Option D: Both a and c Correct Answer : A molecule Read more

✅ C. Producers

a: Decomposers only | b: Predators | c: Producers | d: Primary consumers Read more

✅ D. Kidney

a: Lung | b: Pancreas | c: Stomach | d: Kidney Read more

✅ C. A Tissue

Option A: An organ Option B: An organism Option C: A Tissue Option D: A Cell Correct Answer : A Tissue Read more

✅ C. Mitochondrion

a: Golgi apparatus | b: Lysosome | c: Mitochondrion | d: Ribosome Read more

✅ D. ATP

a: Starch | b: RNA | c: DNA | d: ATP Read more

✅ C. cell membrane

Option A: cell wall Option B: cytoplasm Option C: cell membrane Option D: none of these Correct Answer : cell membrane Read more