Transport in plants practice · Mixed difficulty

Water potential is more when?

Choose the correct statement regarding casparian strips
I. It surrounds pericycle
II. It is made up of legnosuberin
III. It limits the pathway available to water solutes, forcing them to enter the symplast

The transport of organic and inorganic substances in plants over longer distance occurs through vascular tissue by the means of

Which theory is considered best to explain ascent of sap

Who described mass flow hypothesis?

Two chambers are separated by selectively permeable membrane. If one chamber (X) has of ${\psi _w}$ of -2000 kPa and the other (Y) has ${\psi _w}$ -1000 kPa. The direction of the movement of water will be

If water enters in a cell, the pressure exerted by its swollen protoplast is

One factor responsible for water rise up to 100 m of tall plant, is

Addition of more solutes in a given solution will:

Carrier protein, which allows the diffusion of two type of molecules in the same direction is

If water potential of cell A,B and C are -2,-4 and -6 respectively then the water will move from

Difference between OP and TP is known as

Plants develops force for upward conduction of water against gravity is derived from

Mass flow hypothesis was first described by?

Which one of the following is a rapid type of water absorption?

According to the transpiration-cohesion theory, the upward pull of water is transmitted to other water molecules by cohesion, which is caused by

Transport of minerals through xylem is

The plants, which are able to send their roots up to the fringe of water table are called

Which of the following statements is/are not true?
I.In CAM plants, stomata open during dark and remain closed during the day. II.Role of in stomatal opening is now universally accepted.

III.The water potential of root cells is higher than the water potential of soil. IV.Capillarity theory is the most accepted theory of water movement through plants. V.The walls of xylem vessels made up of lingo-cellulose have strong affinity for water molecules.

After heavy rain fall with poor drainage, laves of many plants wilt due to

If turgidity of a cell surrounded by water increases, the wall pressure will

Which type of transpiration continues throughout day and night?

Select the odd one w.r.t external factors affecting the transpiration.

How translocation of organic material is explained in plants?

Movement of molecules in three forms of matter, from a region higher concentration to a region of lower concentration can be termed as

Which statement can be shared by facilitated diffusion and active transport?

Choose the incorrect statement w.r.t. translocation of mineral ions.

Osmosis involves flow of

Which one of the following is the reason for higher rate of transpiration in Sorghum as compared to maize?

Consider the following statements and choose the correct answer
I. Carrier proteins are needed by both facilitated diffusion and active transport and are sensitive to inhibitors that react with protein side chain
II. Different types of proteins present in the membrane plays a major role in both active as well as passive transport
III. The carrier proteins needed by facilitated and active transport are specific
IV. There is no need of energy to pump molecule against a concentration in active transport
V. Transport rate reaches to saturation point, when all the active proteins are used