Identify

(i) PQ (ii) ∠LMR

(iii) NN2 (iv) RS

The following experimental set-ups were kept in the laboratory to show that ‘CO₂ is given out during respiration’.

After 2 hours, in which the delivery tube does the water rise?

Name the type of asexual reproduction in which two individuals are formed from a single parent and the parental identity is lost. Write the first step from where such a type of reproduction begins. Draw first two stages of this reproduction.

The current flowing through a resistor connected in an electrical circuit and the potential difference developed across its ends are shown in the given diagrams.

Find the value of resistance of the resistor in ohms.

What will happen to a plant if its xylem is removed?