Name the following:

(i) The phenomenon by which living or dead plant cells absorb water by surface attraction.

(ii) The phase of cardiac cycle in which the auricles contract.

(iii) The organ where urea is produced.

(iv) The hormone that helps increase the reabsorption of water from the kidney tubules.

(v) Chemical substances produced by micro organisms that can kill or inhibit the growth of other micro organisms.

Choose the correct answer from the four options given below each statement:

A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis to :

1. Remove starch from the plant
2. Ensure that starch is not translocated from the leaves
3. Remove chlorophyll from the leaf of the plant
4. Remove starch from the experimental leaf

Choose the correct answer from the four options given below each statement:

The part of the human eye where rod cells and cone cells are located is the :

1. Retina
2. Cornea
3. Choroid
4. Sclera

Choose the correct answer from the four options given below each statement:

A reflex arc in man is best described as movement of stimuli from :

1. Receptor cell, sensory neuron, relaying neuron, effector muscles.
2. Receptor cell, efferent nerve, relaying neuron, muscles of the body
3. Receptor cell, spinal cord, motor neuron, relaying neuron.
4. Receptor cell, synapse, motor neuron, relaying neuron.