1. How allergy is caused? (3 marks).
2. How the exoskeleton of mollusc is different from arthropods? (3 marks).
3. What structures are present on the thorax and abdomen of insects? (5 marks).
MCQs:
1. Incomplete metamorphosis is —-
2. In which metamorphosis young is unlike adult?
3. Ovipositor consists of — parts.
MCQs were mainly from past papers.