The ciliated epithelial cells are required to move particles or mucus in a specific direction. In human, these cells are mainly present in :
Bile duct and Bronchioles
Fallopian tubes and Pancreatic duct
Eustachian tube and Salivary duct
Bronchioles and Fallopiun tubes
Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth :
Pharynx Oesophagus Crop Gizzard Ileum Colon Rectum
Pharynx Oesophagus Gizzard Crop Ileum Colon Rectum
Pharynx Oesophagus Gizzard Ileum Crop Colon Rectum
Pharynx Oesophagus Ileum Crop Gizzard Colon Rectum
Persistent nucellus in the seed is known as:
Pholem in gymnosperms lacks:
Albuminous cells and sieve cells
Sieve tube only
Companion cells only
Both sieves tubes and companion cells
Which of the statement given below is not true about formation of Annual Rings in tree?
Annual rings is a combination of spring wood and autumn wood produced in a year.
Differential activity of cambium causes light and dark bands of tissue - early and late wood respectively
Activity of cambium depends upon variation in climate
Annual rings are not prominent in trees of temperate region.
Q. which stage of moss bear sex organ
when they become mature, then they produce sex organs.
50. A protozoan reproduces by binary fission. What
will be the number of protozoans in its
population after six generations ?