Cell Structure and Functions — Science STD 8 — Question

Where is the mode of transmission in yellow vein mosaic of okra ?

Can a liquid exert pressure upwards?

What are non-combustible substances? Name three non-combustible substances.

A chapati maker is a machine that converts balls of dough into chapatis. What effect of force comes into play in this process?

Name the vibrating part of Veena and flute.

Fill in the following blanks with suitable words: In reforestation, the planted trees should be of the same__________ Which were cut down in that forest?

Give reasons. Water is not used to control fires involving electrical equipment.

An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gaps in the following statements using the following terms. muscular, contact, non-contact, gravity, friction, shape, attraction. The force applied by the archer to stretch the bow is an example of __________ force

Fruits detached from a tree fall down due to the force of gravity. We know that a force arises due to interaction between two objects. Name the objects interacting in this case.

In males, urine and sperms pass through a common part of outside. What is this part know as?