List the difference between RBC and WBC.

Differentiate simple reflexes and conditional reflexes.

Name the pituitary hormones, and on the target tissues? How does it exert its action.

Arun and Ram were good friends. But Ram slowly started loosing interest in studies as they grew up. The teacher found out that Ram had three siblings and their parents could not give him good food or personal care. What value does this episode give us.

Write a note on mutation.

X is the oldest fossil bird. The animal X became extinct a long time ago. But the study of fossils of X tells us that it had features like birds and some like reptiles.
(i) Identify 'X'?
(ii) Name one feature in which 'X' resembled birds.
(iii) Name one feature in which 'X' resembled reptiles.

Why are Genetically modified organisms produced? Explain the purpose and advantages.

Write a note on Obesity.

Explain the waste water treatment process.

Explain in detail the uses and main parts of the 'SCRATCH' animation software.