The statement that correctly describes the characteristic(s) of a gene is :

1. In individuals of a given species, a specific gene is located on a particular chromosome.
2. A gene is not the information source for making proteins in the cell.
3. Each chromosome has only one gene located all along its length.
4. All the inherited traits in human beings are not controlled by genes.

Consider the following statements about small intestine and select the one which is NOT correct :

1. The length of the small intestine in animals differs as it depends on the type of food they eat.
2. The small intestine is the site of complete digestion of food.
3. The small intestine receives secretions from liver and pancreas.
4. The villi of the small intestine absorbs water from the unabsorbed food before it gets removed from the body via the anus.

Select the INCORRECT match (between the plant and its vegetative part) from the following :

1. Bryophyllum, leaf
2. Potato, stem
3. Money-plant, stem
4. Rose, root

If four identical resistors, of resistance 8 ohm, are first connected in series so as to give an effective resistance R_s, and then connected in parallel so as to give an effective resistance R_p then the ratio $\dfrac{R$s}{Rp} is

1. 32
2. 2
3. 0.5
4. 16