The wall of the alimentary canal consists of muscular layers. The rhythmic contraction and relaxation of these muscles move the food forward. This is called peristalsis, which occurs throughout the abdomen. It is a type of movement that facilitates the ...

Remember, the pH value of water is 7. Acetic acid (CH₃COOH) is a weak acid while hydrochloric acid (HCl) is a strong acid. Hence, the correct increasing order of acidic strength is water < acetic acid < hydrochloric acid.

When dilute hydrochloric acid is added to iron filings, hydrogen gas and iron chloride are produced. The reaction is as follows: Fe(s) + 2HCI(aq) → FeCl,(aq) + H,

(i) In beakers A and B, exothermic process has occurred. (ii) In beakers A and B, endothermic process has occurred. (iii) In beaker C, exothermic process has occurred. (iv) In beaker C, endothermic process has occurred.

Transport of food in a plant accomplished by using the energy stored in ATP, whereas transport of water and minerals takes place via diffusion and transpiration pull.