CONTENT XI Std Biology-Zoology Glossary QUESTION NO-IV (D) S.No Pictures/Photographs Addison’s disease Marasmus Exopthalmic Goitre QUESTION NO-V (E and F) S.No Experiments Test for Ammonia Test for Urea Test for Salivary Amylase Determine Your Blind Spot Identify the sex of cockroach (using hand lens) QUESTION NO-VI (G) S.No Photographs/pictures Kangayam bull Aquaponics Honey bee Bombyx mori XI Std Biology-Zoology Glossary I. Identify the given animal ‘A’ (picture/specimen) and write any diagnostic features with diagram. . SPONGILLA Reasons for identification: • It is a pore bearing animal.
• It is an aquatic multicellular animals with cellular level of organization. • It possess a canal system where the water enters into the central cavity, spongocoel through minute pores called ostia. • The spongocoel is lined with special flagellated cells called choanocytes. .
SEA ANEMONE Porocyte Ostium Osculum Wooden stick Hypostome Tentacles Basal disk Identification: The given specimen is identified as Spongilla . It belongs to the Phy- lum Porifera. Identification: The given specimen is identified as Sea anemone. It belongs to the Phylum Cnidaria.
Reasons for identification: • Sea anemone is diploblastic and the first group of animals to exhibit tissue level of organization. • It has stinging cells called nematocysts on their tentacles. • The central vascular cavity is called coelenteron which opens out through the hypostome. • The nervous system is formed of a diffused nerve net.
• Cnidarians exhibit basic body forms, polyp and medusa. • The polyp represents the asexual generation and the medusa represents the sexual generation (Alternation of generation). • Development includes a ciliated Planula larva. XI Std Biology-Zoology Glossary .
TAPEWORM . PLEUROBRACHIA Reasons for identification: • It is a dorsoventrally flattened, triploblastic, acoelomate animal with organ level of organization. • It is an endoparasite. • Hooks and Suckers act as organs of attachment.
• Excretion is carried out by specialized cells called flame cells. Reasons for identification: • Pleurobrachia are exclusively marine, biradially symmetrical, diploblastic