NEET BIOLOGY

PLANT PHYSIOLOGY

TRANSPORT IN PLANT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
THE ROOTS OF SOME LAND PLANTS ARE FLOODED THE SEA WATER. THE SALTY SEA WATER BECOMES MORE CONCENTRATED DUE TO EVAPORATION. WHY DO THE PLANTS THEN WILT?
A
THE TRANSPIRATION RATE IS TOO HIGH
B
SALT DAMAGES THE CELL WALL OF ROOT CELL
C
THE PLANT CELL ABSORB TOO MUCH WATER
D
WATER DIFFUSES OUT OF THE PLANT CELL
Explanation: 

Detailed explanation-1: -Salts in the soil can absorb water. This results in less water being available for uptake by the plants, increasing water stress and root dehydration. This is referred to as physiological drought, which, if not corrected, can lead to reduced plant growth.

Detailed explanation-2: -Normally, plants use osmosis to absorb water from the soil. However, when you use salt water to water a plant, the plant is unable to perform osmosis because the water is too dense. What ends up happening is that water is actually drawn out of the plant, dehydrating it, and causing it to cripple.

Detailed explanation-3: -Ocean salt primarily comes from rocks on land and openings in the seafloor. Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater.

Detailed explanation-4: -Sea water is salty because many salts like magnesium chloride and sodium chloride are dissolved in it. These salts are brought mainly through rivers and streams.

There is 1 question to complete.