It refers to the weight of a substance in grams equal to the weight of the substance in atomic weight units.

Produced by dissolving gram mol. weight of water-solute substance in enough H2O to make a liter of solution.

Process by which the water molecules in the cytoplasm move out causing it to shrink.

A special type of diffusion wherein the movement is along a diffusion gradient resulting in a recognizable change in the volume of the latter. This can be observed in germinating seeds, root absorption and others.

Cell organelle that directly controls the overall activities of the cell.

On a windy day, one may expected the temperature to __________ thereby decreasing the rate of transpiration.

This refers to the cytoplasmic membrane that separates the cytoplasm from the cell wall.

There will be an increase in stomatal opening at:

Field of study that deals on how plant develop, grow and respond to their environment at the cellular and biochemical level

Fluid-filled organelle bounded by a single membrane tonoplast and serve as a repository structure.

It gives definite shape and structure to the cell and to the whole plant due to the presence of cellulose.

A method of determining osmotic pressure that makes use of freezing point depression.

Type of transpiration highly controlled by the guard cells.

A high pH is accompanied by a decrease in starch and

The site of respiration in the cell

It is involved in the synthesis of new cell walls

A process of irreversible increase by cell division and enlargement, including synthesis of new cellular material and organization of sub cellular organelles.

Characteristics of water which makes it capable of moving through plant tissues by capillary action.

Type of tonicity wherein the solution has osmotic pressure (OP) lower than the that present in the plant cell sap causing the water molecules to move inward.

Actual pressure responsible for pushing the cell membrane against the cell wall

This phenomenon refers to the binding of molecules or particles to a surface or membran.

Which is the following is the correct formula in explaining the water potential mechanism?

Small particles suspended in water with sometimes glue-like consistency smaller than suspension particles and larger than true solute particles.

This refers to the phenomenon wherein the osmotic pressure of a solution is greater than that present in the plant cell sap causing the water molecules to move outward.

A procedure to determine the rate of transpiration that involves the loss of plant from one period of time to another as the surface of soil covered so as to eliminate water loss due to evaporation

In the equation OP=22.4 MT/273, M is

The site of protein synthesis in the cell that interprets message coming from DNA.

Process whereby water is lost in the form of vapor through the leaves via stomata

When plant cell is turgid, what is likely to happen?

The effect of light scattering on particles in colloid systems, such as suspensions or emulsions.

Osmotic pressure is also called

Movement of atoms or molecules from an area of high concentration to an area of low concentration.

If 5% NaCl solution was prepared, it has

This method of determining transpiration involves plant being enclosed in a box, CaCl2 is used, oven-dried first then weighed, placed inside U-tube, blow in air into box for plant to transpire.

Plasmolysis occurs if the cell solution is:

Which is the condition need necessary for the imbibition to occur

The volume of seed’s whole system decreases after imbibition because water molecules are adsorbed tightly and are packed closer together resulting to:

It is a process of qualitative change in plants over time.

A type of transpiration wherein water is lost from the waxy covering of the leaves, fruits, and stem.

A structure present in the endodermis that restricts the passage of water and minerals due to the presence of waxy material called suberin.

A cell organelle highly connected to the nucleus that is involved in the cell transport due to the absence of ribosomes.

All of the following are considered ergastic substance except:

Major plant tissue responsible for the transport of water, minerals and food in the different plant organs

Major tissue consisting of parenchyma, collenchyma and sclerenchyma and primarily functions for photosynthesis and storage.

Type of collenchyma cell that are arranged in rows and thickened at the tangential face of the cell wall.

Living cells that function for storage and support to photosynthesis and phloem loading; with thin permeable primary walls enabling the transport of small molecules

Ergastic substances produced by the plants due to calcium carbonate or calcium oxalate

The following are considered importance of imbibition

Which of the following affects the rate of diffusion?

The greater leaf area, the lesser is the amount of water loss

Increase relative humidity of air decreases rate of transpiration

Imbibition pressure is analogous with osmotic pressure.

When the cell is dry, DPD is equal to zero.

Common silvicultural practices followed in forestry like leaf and branch pruning, timber stand improvement techniques, mulching, and weeding are based on specific physiological phenomenon.

Well-watered plants keep their shape due to the internal pressure of H2O in the cells.

All of the following affects the absorption of mineral salts except for:

Increasing the temperature within a certain physiological range decreases the rate of transpiration.

At temperature below absolute zero all components of matter are in motion

As air temperature increases, stomata has the tendency to open.

If the guard cells are turgid, the stomata will close.

Angiosperms is characterized with a sunken stomata thereby preventing excessive transpiration.

A molal solution of an undissociated substance at 0 degree Celsius has an OP of 22.4 atm.

This passive mechanism of ion absorption takes advantage of the apparent free space

Water deficit occurs whenever the rate of transpiration exceeds the rate of absorption.

At high pH, opening of the stomata is usually not favored.

Water deficit causes chemical change in guard cells

Cell division and cell expansion are considered the two major ways by which the plants grow

Transpiration is expected to increase as the root-shoot ratio also increases.

Accumulation ratio refers to the ratio of the concentration of certain ion inside the cell and the concentration of that ion in the soil solution

Active mechanism is a type of absorption that does not require expenditure amount of metabolic energy.

Most carriers of ions are proteins that are sometimes selective in nature.

During dry season, a single corm plant can release as much as 15 L of water via transpiration.

Anastomosis provides a mechanism for the transport of photosynthates in the phloem tissues.

Xylem transport is a highly specialised process for redistributing photosynthesis products, other organic compounds and some mineral nutrients.

Ascent of sap is the upward movement of sap that contains water and minerals.

Reducing sugars are sugars that are not translocated in phloem.

Pits in vascular tissues are intended for the lateral movement of water.

Calcium affects the quality and storage of fruits.

Micronutrients generally comprise 0.025% of plant’s dry tissue.

According to Donnan Law, the rates of diffusion of gases are inversely proportional to the square roots of their densities.

Root uptake especially via passive transport will require considerable amount of energy (ATP)

The steeper the diffusion pressure gradient, the faster is the rate of diffusion.

Cutin are specialized dry vacuole where storage proteins accumulate in a stable form in seeds

In general, colloidal solutions are heterogeneous in nature and it is consists of dispersed phase and dispersion medium.