Tag: different types of circulatory systems
Questions Related to different types of circulatory systems
Loss of water in the form of vapours from the living tissues of aerial plant parts is called _________________.
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Transpiration
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Guttation
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Bleeding
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Precipitation
The loss of water in the vapour form from the exposed parts of a plant is called transpiration. The loss of water due to transpiration is quite high. It is 22 litre per day in sunflower, 36−4536−45 litres in apple and upto 11 tonne per day in elm tree.
Leaf pores/ stomata help in _______.
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Intake of $CO _2$ during photosynthesis
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Release of $O _2$ during photosynthesis
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Release of water vapour during transpiration
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All of these
Stomata has 3 major functions:
The mechanism of transpiration in plants is performed by:
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Stem
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Only leaves
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Flowers
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All of these
The process of transpiration in plants helps in
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Opening of stomata.
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Absorption of $CO _2$ from atmosphere.
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Upward conduction of water and minerals.
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Absorption of $O _2$ from atmosphere.
Which force arises between the water molecules of leaves due to transpiration?
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Cohesive forces
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Pressure force
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Suction force
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Adhesive force
A.Cohesive force – force of attraction present between the water molecules is called cohesive force. Due to this, water column maintains tensile strength.
B.Pressure force – force developed to accumulation of pressure.
C.Suction force – force exists in the sucking of water.
D.Adhesive force – force of attraction exists between the water molecules and walls of the vessels is called adhesive force. Due to this, capillarity exists in the water column.
So, the correct option is ‘cohesive force’.
The process of transpiration in plants helps in the
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Opening of stomata
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Closing of stomata
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Upward conduction of water and minerals
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Both B and C
Transpiration is the loss of water by the stomatal openings of the aerial parts of the plant. This helps in the upward movement of water and minerals from the roots to the leaves by a cohesion-adhesion mechanism.
Which is used to measure the rate of transpiration?
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Atmometer
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Psychrometer
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Potometer
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Porometer
Atmometer is a device used to measure the rate of water evaporation from a wet surface to the atmosphere and can be used to measure the rate of evapotranspiration.
The process of transpiration is a
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Diffusion
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Osmosis
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Active transport
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facilitated Diffusion
Water movement against gravity is caused by?
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Imbibition
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Transpiration
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Osmosis
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Diffusion
The shade of the tree is often cooler than exposed atmosphere, because of
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Photosynthesis
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Respiration
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Transpiration
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Guttation
Transpiration is a process of loss of water from a plant in vapour form. One of the benefits of transpiration is that it causes surface cooling because evaporation of water requires energy. Consumption of energy leads to a cooling effect on the leaf surface. Also because of more water vapour content in shade, a tree shade is cooler than area exposed to sunlight.