Plant Ecology and Phytogeography

Water freezes at 36^oF. 

• True

• False

1.    Heavy rainfall intensity is ---------

• 2.5 mm/hr   

• 2.3-7.5mm/hr    

• >7.5mm/hr    

• < 7.5mm/hr

Average density of snow is 0.1 gm/cc. 

• True

• False

1.    In which temperature more and more droplets are freeze-------------

• -35^oC   

• -40^oC

• -45^oC

• -50^oC

The point at which as soil loses water, this free water assumes the form of discontinuous rings is referred to as the field capacity.

• True

• False

It is a navigable body of water.

•   Waterfalls    

• Waterway

• stream

• channel

The bayous and backwaters are breeding grounds for

• Mosquitoes  

• fish 

• sea animals 

• sea anemone

An artesian well is a type of confined aquifer and U -shaped.

• True

• False

1.    Aquifers acts as reservoirs for ------------------.  

• Drinking water 

• Rain water

• Ground water 

• None of the above

Vascular tissues are poorly developed in hydrophytes. 

• True

• False