Name the kind of epithelium found in lung alveoli. What is the advantage of its presence there?

Name the kind of epithelium found in the proximal convolued tubule of nephrons. What is the advantage of this tissue being present there?

Name the kind of tissue found at the shoot tip.

Name two plants with stem thorn. What is the advantage of thorn to the plants.

What kind of plant tissue is found in the buds located in the axils of leaves?

In operation of a galvanic cell, at one of its electrodes oxidation takes place. What is the name of this electrode and what is its polarity?

A SONAR (sound navigation and ranging) uses ultrasonic waves to detect and locate objects under water. In a submarine equipped with a SONAR the time delay between generation of a probe wave and the reception of its echo after reflection from an enemy submarine is found to be 77.0 s. What is the distance of the enemy submarine? (Speed of sound in water = 1450 m s^(-1) )

A metre stick is balanced on a knife edge at its centre. When two coins, each of masb 5 g are put one on top of the other at the 12.0 cm mark, the stick is found to be balanced at 45.0 cm. What is the mass of the metre stick?

What is venation? Name its two kinds.

What is meant by flux? Describe its two kinds.

What is meant by ciliated epithelium? Name two sites in our body, where they are present.