2015 - JAMB Biology Past Questions and Answers - page 6

Option D is correct. This is because Homeostasis is any self-regulating process by which biological systems tend to maintain stability while adjusting to conditions that are optimal for survival.

Option D is the correct answer. This is because, Spirogyra exist as filament that occurs in rows or chains.

Option A is correct. This is because, the part that makes kidney perform its osmoregulation function in man is the nephron i.e. the production or formation of urine is done through nephron in the kidney.

Option C is correct. This is because, bed bug is not an animal pest that can affect crop plants in a farmland. It can only affect animals like homo sapiens etc.

Option B is correct. This is because, when the male sperm and female egg come in contact with each other, it becomes a fertilized egg or cell. When this happen, it results to forms the zygote.

Option A is correct. This is because halophytes are plants that live successfully in a marine(salt water) habitat.

Option B is the correct answer. This is because, cholera is a water borne disease (disease caused by contaminated water).