The following paragraph is related to absorption of water from the soil. Copy and complete the following paragraph by selecting the correct words from those given in the box. You may use the term only once.

Exosmosis, Hypertonic, Osmosis, Isotonic, Hypotonic, Cortical, Endosmosis

Water enters the root hair from the soil by the process of …… . This is because the solution in the soil is……. whereas the cell sap in the root hair cell is …….. The water then passes through the …….cells by cell to cell ……and reaches the xylem of the root. 

Given below are incomplete explanations of certain biological processes/terms where a keyword has been left out. Rewrite the completed explanation by inserting the keyword in the space indicated by ^.

(i) Birthrate Is the number of  ‘^’ births per thousand of the population per year.

Given below are incomplete explanations of certain biological processes/terms where a keyword has been left out. Rewrite the completed explanation by inserting the keyword in the space indicated by ^.

(ii) Photolysis is the splitting of water molecules into hydrogen ions and hydroxyl ions in the presence of '^' and light.

Given below are incomplete explanations of certain biological processes/terms where a keyword has been left out. Rewrite the completed explanation by inserting the keyword in the space indicated by ^.

(iii) Vaccine is a preparation consisting of '’^’' microbes which help to build immunity in the human body.

Given below are incomplete explanations of certain biological processes/terms where a keyword has been left out. Rewrite the completed explanation by inserting the keyword in the space indicated by ^.

(iv) Osmosis is the movement of water molecules from its region of high concentration to its region of low concentration through a'^' membrane.

Given below are incomplete explanations of certain biological processes/terms where a keyword has been left out. Rewrite the completed explanation by inserting the keyword in the space indicated by ^.

(v) Antiseptics are chemical substances applied to the '^' to destroy or prevent the growth and multiplication harmful microbes. 

7.

Name the following

A membrane which disappears during late prophase.

Name the following

(ii) A fluid which occupies the larger cavity of the eyeball behind the lens.

Name the following

iii) The ground substance present in a chloroplast.

Name the following

 (iv )A specific part of a chromosome which determines hereditary characteristics.