Digestive juices were collected from three different regions of the alimentary canal. Drops of these juices were added to wells made in an agar of starch as shown below.
After an hour, the wells were rinsed with distilled water and flooded with iodine solution. The results are shown below.
Which of the following correctly identifies the regions of the alimentary canal from which the three digestive juices were obtained?
When a glass rod is rubbed with a piece of silk cloth, the rod ____.
AAnd the cloth both acquire positive charge
BBecomes positively charged, while the cloth has a negative charge
CAnd the cloth both acquire negative charge
DBecomes negatively charged, while the cloth has a positive charge
What is the function of the part labelled as 'X' in the given figure?
AIt produces the ovum when a female reaches puberty.
BIt transports the ovum from the ovary to the uterus.
CIt serves as the site of implantation of the embryo.
DIt is the place where development of embryo takes place.
Read the given passage and fill in the blanks by choosing an appropriate option.
The molar ratio of CO2 and H2O produced by the combustion of one mole of hydrocarbon _i_ is 5 : 4. The succeeding homologoue of i is _ii_ while preceding homologoue is _iii_.