A student on a school picnic to a park on a windly day started sneezing and having difficulty in breathing on reaching the park. The teacher enquired whether the student was allergic to something .

A student on a school picinic to a park on windy day started sneezing and haivng difficulty in breathing on reaching the park. The teacher enquired whether the student allergic to something. Write two characterstis of the system involved in theresponse observed in the student.

A student on a school picinic to a park on windy day started sneezing and haivng difficulty in breathing on reaching the park. The teacher enquired whether the student allergic to something. What is allergy?

A picnic is being planned in a school for Class VII. Girls are 60% of the total number of students and are 18 in number. The picnic site is 55 km from the school and the transport company is charging at the rate of Rs 12 per km. The total cost of refreshments will be Rs 4280 Can you tell : The cost per head if two teachers are also going with the class?