To suggest rule for inheritance of earlobe type. Procedure /Method : rarr The lowest part of the ear pinna called the earlobe, is closely attached to the side of the head, i.e., attached or not, i.e., free. rarr Observe the earlobes of all the students in the class. Prepare a list of students. Enter the data about the earlobes whether they are free or attached. rarr Find out about the earlobes of the parents of each student in the class. rarr Correlate earlobe type of each student with that of their parents. rarr In the column write F for free earlobe and A for attached earlobe. Answer the following questions on the basis of the collected data: Determine the percentage of free earlobe and attached earlobe in the students of your classroom.

Describe the change in hybridization (if any) of the Al atom in the following reaction. AlCl_(3) + Cl^(-) rarr AlCl_(4)^(-1)

How motion of any particle is described ?

How will you describe the position of a table lamp on your study table to another person?

To understand resonance describe the experiment of oscillations of five pendulums.

Which of the following are primaryt and secondary data ? (i) Collection of the data about enrollment of students in your school for a period from 2001 to 2010. (ii) Height of students in your class recorded by physical education teacher.

Are the positions of (5,-8) and (-8,-5) is same? Justify your answer.

Describe any three functions of Golgi apparatus.

Describe any three functions of Golgi apparatus.

In the given figure, name (i) any six points (ii) any five line segments (iii) any four rays (iv) any four lines (v) any four collinear points