Subject Experts Solutions for Exercise 1: PRACTICE PAPER

Match the plant hormones listed in column I with their major role listed in column II and select the correct option from the codes given below.

During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?

Which of the labelled parts of human brain is concerned with swallowing, coughing, sneezing and vomiting?

Which is essential for the growth of root tip?

Which one of the following is incorrect for 'atherosclerosis'?

The below diagram is the cyclic series of reactions that occurs during carbon fixation stage of photosynthesis.

(i) Carbon dioxide is taken into the cycle at stage $\underset{¯}{A}$.
(ii) Hydrogen from reduced hydrogen acceptor is used at stage $\underset{¯}{B}$

(iii) Energy from ATP is used to drive stage $C$
(iv) The substance formed at position$Y$ is $D$

(v) If one molecule of substance$Y$ is released per cycle, the cycle must turn $E$ times for one molecule of sucrose $\left({\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}\right)$ to be built up at position $\mathrm{Z}$.

The given graph shows pressure changes in the left side of the heart during a single heartbeat.

Between points $\mathrm{W}$ and $\mathrm{X}$, which of the following valves are open or closed respectively?

Which of these epithelia is chiefly involved in function like diffusion and thereby is found in the wall of blood vessel and air sacs of the lungs?