Question

15 interesting points on transportation in plants​

Answer 1

Answer:

[tex]\huge\colour\blue{Hey mate here's your answer}[\tex]

Explanation:

• Plant transport various substances like gases, minerals, water, hormone and organic solutes to short distance (one cell to another) or long distance as water from roots to tips of stem.

• Long distance transport occurs through vascular system, xylem and phloem called translocation through mass flow.
• The direction of translocation may be unidirectional as in case of water and multidirectional as in minerals and organic solutes.
• Movement by diffusion is passive and slow along the concentration gradient through permeable membrane.
• No energy expenditure takes place. It occurs in liquid and gases.
• Rate of diffusion are affected by gradient of concentration, permeability of membrane, temperature and pressure.
• Lipid soluble particles easily pass through cell membrane but the hydrophilic solutes movement is facilitated.
• For facilitated diffusion, membrane possesses aquaporins or water channels. Aquaporins are membrane proteins for passive transport of water soluble substances without utilization of energy.
• The protein forms channels in membrane for molecules to pass through. The porins are proteins that forms huge pores in the outer membrane of the plastids, mitochondria etc.
• Water channels are made up of eight different types of aquaporins.
• In Symport, both molecules cross the membrane in the same direction.
• In Antiport, both molecule moves in opposite direction.
• When a molecule moves across a membrane independent of other molecules, the process is called uniport
• Uses energy to pump molecules against the concentration gradient. It is carried out by membrane proteins.
• In active transport movable carrier proteins are called pumps

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Answer 2

heyyyaaa, it's your ans-

Transportation in plants refers to the movement of water and minerals from the roots to different parts of the plants. It also includes the movement of the food prepared by the leaves to the entire plants.

1) Plants have two transport systems - xylem and phloem .

2) Xylem transports water and minerals.

Phloem transports sugars and amino acids dissolved in water.

3) Xylem moves water from roots to the leaves, and phloem moves food from the leaves to the rest of the plant.

4) During transpiration water evaporates from the leaves and draws water from the roots.

5) It is by using the energy from ATP that the food made in the leaves of a plant is loaded in sieve tubes of phloem tissue.

6) This high pressure produced in phloem tissue moves the food to all other parts of a plant having less pressure. In this way food is transported to all parts of a plant through phloem tissue.

7) Most of the living cells in a plant have at least part of their surface exposed to air.

8)The loose packing of parenchyma cells in leaves, stems, and roots provides an interconnecting system of air spaces.

9) Oxygen and carbon dioxide also pass through the cell wall and plasma membrane of the cell by diffusion.

10) Plants release oxygen during the day in the presence of natural light through the process of photosynthesis. While at night, the plants uptake oxygen and release carbon dioxide, which is called respiration.

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