Botany Test 7
| Description: Botany test 7 | |
| Number of Questions: 29 | |
| Created by: Amish Majumdar | |
| Tags: Botany test 7 Plants and Water Relation Plant Water Relations Transpiration Chemical and Water Potential Water Potential in Plants Osmosis Ascent of Sap Water Absorption Absorption of Water by Plants |
The most common type of transpiration is:
Wilting in plants occurs when
In both evaporation and transpiration, water is lost in the form of vapour, yet they differ because
The osmotic potential of a solution is denoted by the symbol:
The process which may lower the temperature of leaves is:
Active K+ exchange mechanism for opening and closing of stomata was given by
Which of the following is used for determining the rate of transpiration in plants?
With increase in turgity of a cell surrounded by water, the wall pressure will:
Osmosis is defined as the process in which:
Exudation of xylem sap on cutting the shoot is due to
Loss of turgor from the cells causes drooping of leaves during day, but they recover from it at night. This is called
______ percentage of water absorbed by herbaceous plants is lost during transpiration.
Dumb-bell shaped guard cells are found in:
Root pressure is maximum when
Stomata open during the day time because the guard cells
Sunflower contains
If CO2 concentration suddenly increases around the leaf, which one of the following events will occur?
Plants will undergo wilting under which one of these conditions?
Water potential is equal to
In rainy season, wooden door swells up due to
Which one of the following is produced during water stress and causes closure of stomata?
Plant cells submerged in distilled water becomes:
In a terrestrial habitat, the factor that affects temperature and rainfall conditions is:
Generally the number of stoma per square cm leaf area is:
The vacuolar membrane is called
In many thin leaved mesophytes, stomata open during day and close at night. This comes under
Increase in CO2 concentration around leaf results in
In which of the following plants would metabolism be hindered, if the leaves are coated with wax on their upper surface?
Root pressure is maximum when