General Science/Basic Science Plant Physiology Transpiration. Sample Test,Sample questions

Question:
17.Cuticle retards water loss through

1.Passage cells

2. Parenchyma cells

3.Epidermal cells

4.Mesophyll cells


Question:
19.A large quantity of transpirational water loss occurs through

1.Stomata

2.Cuticular

3.Lenticular

4.Hydathodes


Question:
20.The water vapour accumulates in the intercellular spaces creating a concentration gradient between

1.Atmospheric air and intercellular spaces of leaves

2.Atmospheric air and extracellular spaces of leaves

3.Atmospheric air and intercellular spaces of roots

4.Atmospheric air and intercellular spaces of stems


Question:
Accumulation K ions are enhances in the presence of

1. temperature

2.Light

3. Water

4.Oxygen


Question:
An ideal condition for transpiration in leaves depends on

1.Thin walls of mesophyll cells

2.Large number stomata

3.Large intercellular spaces

4.All the three


Question:
An inverted h shaped three limbed tube is used

1.To measure the rate of transpiration

2.To demonstrate transpiration pull

3.To demonstrate liberation CO? during respiration

4.To demonstrate that O? is evolved during photo synthesis


Question:
Differences in water potentials of the guard cells are caused by accumulation or loss of

1.Ca?? ions

2. K? ions

3.Cl? ions

4.Mg?? ions


Question:
Due to differences in water potentials of the guard cells  darkness promotes the loss of

1. K? ions

2. Ca?? ions

3. Cl? ions

4.Mg?? ions


Question:
Escape of water vapour from leaves takes place through

1.Lenticels

2.Stomata

3.Cuticle

4. Epidermal cells


Question:
Excess thermal energy is disposed by the plants

1.Respiration

2.Transpiration

3.Photosynthesis

4.Guttation


Question:
Guttation liquid is

1. Pure water

2. Pure solvent

3. Not pure water

4. Not pure solvent


Question:
In woody plants the bark tissue contain

1.Guard cells

2.Stomata

3.Lenticels

4.Epidermal cells


Question:
Leaf surface is coded by the process of

1.Guttation

2.Respiration

3.Photosynthesis

4.Transpiration


Question:
Loss of water in a liquid form along the margins of leaves is known as

1.Guttation

2. Transpiration

3.Photosynthesis

4. Respiration


Question:
Loss of water in the guard cells makes them

1.Turgid

2.Flaccid

3.Cupid

4.Rigid


Question:
Minute pores surrounded by two guard cells found on epidermis are called

1. Guard cells

2.Stomata

3.Lenticels

4.Epidermal cells


Question:
Photosynthetic carbon assimilation in guard cells is related to

1.Cuticular movement

2.Stomatal movement

3.Lenticular movement

4.Guttation


Question:
Relative density of mercury is

1.3.6 gms

2. 13.6 gms

3. 90 gms

4. 96.4 gms


Question:
Stomata open and close due to changes in the guard cells by

1.Osmotic pressure

2. Root pressure

3. Turgor pressure

4. Capillary pressure


Question:
The amount of absorbed water lost by plants in the form of vapour is

1.10%

2.50%

3.80%

4.90%


Question:
The apparatus used to measure the rate off transpiration isGanong s light screen

1.Ganong s respiroscope

2.Ganong s photometer

3.Ganong s light screen

4.Thistle funnel


Question:
The entry of water from adjacent cells to guard cells is caused by the differences in water potential of their Opt 1 : Protoplasts

1.Chloroplasts

2.Plastids

3.Carotenoids

4.rotoplasts


Question:
The entry of water from adjacent cells to guard cells or vice versa is caused by the differences in

1.Osmosis

2.Diffusion

3.Water potential

4.Imbibition


Question:
The entry of water makes guard cells as

1.Turgid

2.Flaccid

3.Rigid

4.Cupid


Question:
The escape of water vapour from leaves through stomata by diffusion is caused by

1.Active transport

2.Concentration gradient

3.Osmosis

4.Guttation


Question:
The humidity in atmosphere affects

1.respiration

2.transpiration

3.growth

4.photosynthesis


Question:
The ideal material for the disposal of solar energy from the plants is

1. Water

2. K? ions

3.Organic compounds

4. Pectic substances


Question:
The internal temperature of the plant cells become uniform and constant by

1.Photosynthesis

2.Respiration

3. Transpiration

4.Guttation


Question:
The stoma is open when the guard cells are

1.Flaccid

2.Rigid

3.Turgid

4.Cupid


Question:
The type of transpiration which is insignificant as compared to stomatal transpiration

1.Cuticular

2.Lenticular

3.Guttation

4.Hydathodes


Question:
This is not a type of transpiration

1.Stomatal

2.Cuticular

3.Lenticular

4.Guttation


Question:
Transpiration helps in absorption and translocation of mineral salts by means of the

1.Push and pull force

2.Pull and capillary force

3.Push and suction force

4.Pull and suction force


Question:
Transpiration through lenticels is called

1.Stomatal

2.Lenticular

3.Cuticular

4. Guttation


Question:
Water is translocated through xylem tissue to the

1.Mesophyll cells of leaves

2.Epidermal cells of leaves

3.Passage cells of roots

4.Parenchymal cells of stems


Question:
Water potential of the guard cells during day time is

1.High

2.Very high

3. Low

4. Very low


Question:
Water potential of the guard cells during night time isLow

1.Low

2.very low

3. High

4.vary high


Question:
Water vapour is escaped from leaves through stomata by

1.Osmosis

2. Guttation

3. Diffusion

4. Capillary force


Question:
When guard cells are flaccid the stoma is

1.Closed

2.Opened

3.Broadenced

4.Narrowed


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