Transport RT(MCAT)

Plant cells do not burst in distilled water, because

• Cell wall is elastic, rigid and gets stretched

• Cell wall is living

• Cell wall is the outer most layer of plant cell

• Cell wall is permeable

A cell placed in strong solution will shrink because

• Cytoplasm will decompose

• Mineral salt will break the cell wall

• Salt Water enter the cell

• Water comes out by ex-osmosis

Tags

NGSS.HS-LS1-3

Cells absorb water by

• Osmosis

• Osmosis and imbibition

• Imbibition alone

• Diffusion

When a potato piece is kept in a highly concentrated salt solution, then the

• Potato is plasmolysed

• Potato is deplasmolysed

• Potato cells get bursted

• There is no effect due to isotonic solution

Tags

NGSS.MS-LS1-5

When a cell is fully turgid, which of the following will be zero?

• Turgor pressure

• Wall pressure

• Suction pressure

• Osmotic pressure

Which one of the following will reduce the rate of transpiration?

• Increase in wind velocity

• Rise in temperature

• Increase in water uptake by plants

• Decrease in light intensity

Which of the following is the most likely cause for wider opening of stomata?

• Atmosphere outside the stomata is becoming less humid.

• Secretion of salt molecules by adjacent guard cells is taking place.

• Water molecules enter the guard cells.

• The night temperature is going to fall.

A plant requires potassium for

• Synthesizing proteins

• Synthesizing chlorophyll

• Holding its cells together

• Opening and closing of stomata

Root pressure is maximum when

• Transpiration is high and absorption is very low.

• Transpiration is very low and absorption is high.

• Transpiration is very high and absorption is also high.

• Both transpiration and absorption are slow.

Tags

NGSS.MS-LS2-4

Diffusion is very important for plants since it is the only means of

• Water translocation in root

• Gaseous exchange within plant

• Mineral translocation in root

• Sugar transport from phloem to sink

Tags

NGSS.MS-LS2-3