Tag: types of plant transport

Questions Related to types of plant transport

The process of diffusion is involved in _____________.

botany plant water relation active transport and passive transport types of plant transport atp

  1. Respiration

  2. Photosynthesis

  3. Transpiration

  4. All of these

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Correct Option: D
Explanation:

Diffusion keeps the cell walls of the internal plant tissues moist. It is a means of spreading of ions and other substances throughout the protoplast. Transpiration or loss of water in vapour forms is a diffusion process. Exchange of gases (CO2(CO2 and O2)O2) during photosynthesis and respiration between the plant interior and outside air also occurs through diffusion.

In plants diffussion occurs in

botany plant water relation active transport and passive transport types of plant transport atp

  1. Exchange of gases

  2. Transpiration

  3. Absorption of water by roots

  4. Opening of flowers

Show answer
Correct Option: A
Explanation:

The movement of oxygen and carbon dioxide in and out of leaves during photosynthesis occurs by diffusion.

So the correct option is 'exchange of gases'.

A plant cell was put into a solution of substance A at a concentration of $200\ mmol/L$. The rate of uptake into the cell was measured as $5\ mmol/minute$. When the cell was placed in a solution of substance A at a concentration of $400\ mmol/L$, the rate of uptake was $10\ mmol\ per\ minute$. When the experiment was repeated with substance B, the rate of uptake was $10\ mmol\ per\ minute$ at both concentrations of the substance. Which of the following provides the best explanation of the results?

botany plant water relation active transport and passive transport types of plant transport atp

  1. Substance A appears to move into the cell by active transport, and B by diffusion

  2. Substance A and B appear to move into the cell by passive transport

  3. Substance A and B appear to move into the cell by active transport

  4. Substance A appears to move into the cell by diffusion and substance B by active transport

Show answer
Correct Option: A
Explanation:
In the active transport, as the concentration of the solution increases, so does the amount of uptake in a cell. And in diffusion, the amount of the uptake of a substance in a cell is usually not affected by the concentration of the solution.

So, the correct answer is 'Substance A appears to move into the cell by active transport and B by diffusion'.

Which of the following is zero in fully turgid cell?

botany plant water relation active transport and passive transport types of plant transport atp

  1. DPD and ${ \Psi } _{ P }$

  2. DPD and ${ \Psi } _{ W }$

  3. OP and ${ \Psi } _{ W }$

  4. TP and ${ \Psi } _{ P }$

Show answer
Correct Option: A
Explanation:

DPD is the difference in the diffusion pressure of the solution and a pure solvent when both are subjected to the same atmospheric pressure. When the increasing turgor pressure becomes equal to the decreasing osmotic pressure, the entry of the water into the cell would stop. This is called the turgid condition of the cell. This is when DPD equals zero.

Pressure potential is the positive pressure developed in the system due to the osmotic entry of water into it. It is negative in plasmolysed cell and xylem vessel and zero for the turgid cell.
Hence, the correct answer is 'DPD and ${ \Psi } _{ P }$'

Choose the correct answers from the alternatives given.
In a fully turgid cell, which one of the following would be zero?

botany plant water relation active transport and passive transport types of plant transport atp

  1. Suction pressure

  2. Osmotic pressure

  3. Wall pressure

  4. Turgor pressure

Show answer
Correct Option: A
Explanation:

Suction pressure or the DPD is given as the difference of osmotic pressure and the turgor pressure, $DPD = OP - TP$

In a fully turgid cell, the entry of water into the cell causes the development of the turgor pressure, therefore, TP cannot be zero. When the increasing turgor pressure becomes equal to the decreasing osmotic pressure, the entry of water into the cell would stop. This means DPD becomes zero in a fully turgid condition.
Hence, the correct answer is 'Suction pressure'.

Energy currency/coin of cell is

zoology respiration and energy transfer active transport and passive transport types of plant transport atp

  1. ATP

  2. NAD

  3. ADP

  4. GDP

Show answer
Correct Option: A
Explanation:

ATP is adenosine triphosphate. It is formed of an adenine, a ribose and three phosphate radical attached to ribose. It is a storehouse of energy. It is found in all living cell. ATP is called energy currency as well as an energy carrier of the cell. ATP usually obtains energy during respiration. It provides energy for membrane transport, nerve conduction, cell movement, cell division etc. Breakage of one phosphate bond in the presence of ATP-ase and releases of 8.9Kcal per mole. Thus, the correct option is A.

Which of the following is energy rich compound formed in cellular respiration?

zoology respiration in organisms active transport and passive transport types of plant transport atp

  1. ADP

  2. Glucose

  3. Water

  4. ATP

  5. Oxygen

Show answer
Correct Option: D
Explanation:

During cellular respiration, the energy formed in mitochondria is stored in the form of ATP which is also known as energy currency of the cell. It provides energy for all the life activities by its breakdown into ADP and Pi. ATP contains three phosphate group which has high energy bond. On the hydrolysis of ATP energy is released and ADP formed.

Which one of the following is known as energy currency of cell?

zoology respiration in organisms active transport and passive transport types of plant transport atp

  1. Adenosine diphosphate

  2. Adenosine triphosphate

  3. Pyruvate

  4. Glucose

Show answer
Correct Option: B
Explanation:

Adenosine triphosphate (ATP) is known as the energy currency of the cell. There are three phosphate bonds which store a large amount of energy. When these bonds are broken down, the energy is released. The energy is used to carry out biochemical reactions in the cell.

Thus, the correct answer is option B. 

ATP was discovered by

zoology respiration in organisms active transport and passive transport types of plant transport atp

  1. Lipmann

  2. Lohmann

  3. Blackman

  4. Bowman

Show answer
Correct Option: B
Explanation:

ATP is known as energy currency of the cell and it is a nucleotide formed by the combination of adenine as a nitrogenous base, ribose sugar, and triphosphate. It is found in free cells which breaks to form energy by breaking its high energy phosphate bonds. Karl Lohmann was first to discover ATP. It is produced by the mitochondria in the cell.

So, the correct answer is option B.

In which molecule is energy stored in the body?

zoology respiration in organisms active transport and passive transport types of plant transport atp

  1. RNA

  2. DNA

  3. ADP

  4. ATP

Show answer
Correct Option: D
Explanation:

Adenosine triphosphate is a nucleotide also known as the energy currency of the cell that stores the energy in the form of phosphate bonds. When this bond breaks energy releases.

DNA and RNA are the genetic material of the living organism.
So the correct option is 'ATP'.