To demonstrate the action of salivary amylase on starch Take 1 mL starch solution (1%) in two test tubes (A and B).

Add 1 mL saliva to test tube A and leave both test tubes undisturbed

for 20-30 minutes.

Now add a few drops of dilute iodine solution to the test tubes.

*THE QUESTION*

Akhil boiled the contents in the test tube A for half an hour before testing it with iodine. Will he get the result? Why?

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.