Question

Draw a plant cell and label the following:

i) Which gives definite shape to the cell

ii) Which stores waste material

iii) Kitchen of the cell

iv) Store of genetic information


Differentiate : Metals and Nonmetals.


Write one use of each of the following:-

(i)Chlorine (ii)Iodine (iii)Sodium (iv)Mercury

(v)Aluminium (vi)Phosphorous


How can we prevent the folowing diseases.

(i) Cholera (ii) Typhoid​

Answer 1

Answer:

I like a plant cell from microscopic

Answer 2

Following are the answers of the given questions.

Explanation:

1. The labeled diagram of plant cell is given in the figure.

         (i) Cell wall: it gives the definite shape to the cell.

         (ii) Vacuole: it stores the waste material in plant cells

         (iii) Mitochondria: produce ATP, hence called kitchen of cell

         (iv) Nucleus: is the brain of the cell which stores all the genetic

                               information.

    2. Metals

• Mercury: the only metal that is liquid and is used in thermometers.
• Aluminium: used to make utensils and wires.

       Non-metals

• Chlorine: used to clean water tanks and swimming pools water.
• Iodine: marked used in body in formation of hormones of thyroid gland.
• Sodium: major electrolyte of the body used for electrolytic balance.
• Phosphorus: used in making of matchstick front part as its ignition point is low.

 

    3. Cholera and Typhoid both are water born diseases and thus to prevent them we have take care of:

• drink clean boiled water
• cook the food well and keep food covered
• wash the fruits and salad before consumption with boiled water
• keep the environment clean
• follow the hygiene well- wash hands with soap before eating, do not defecate in open etc.