What happens when a pressure greater tha | Class 11 Biology Chapter Transport in Plants, Transport in Plants NCERT Solutions

Define a taxon. Give some examples of taxa at different hierarchical levels.

What are the steps involved in formation of a root nodule?

How does a gap junction facilitate intercellular communication?
 

Two key events take place, during S phase in animal cells, DNA replication and duplication of centriole. In which parts of the cell do events occur?
 

When a freshly collected Spirogyra filament is kept in a 10% potassium nitrate solution, it is observed that the protoplasm shrinks in size:
a. What is this phenomenon called?
b. What will happen if the filament is replaced in distilled water?

A flowering plant is planted in an earthen pot and irrigated. Urea is added to make the plant grow faster, but after some time the plant dies.
This may be due to _______________ .
 

While eating peach or pear it is usually seen that some stone like structures get entangled in the teeth, what are these stone like structures called?
 

Water moves up against gravity and even for a tree of 20m height, the tip receives water within two hours. The most important physiological
phenomenon which is responsible for the upward movement of water is _______________________.