Biology
Answer
Xylem
Reason — Xylem is the vascular tissue responsible for the transport of water and minerals.
The cortex is the layer of cells between the epidermis and vascular tissues in roots and stems. It mainly helps in storage and transport of water inward, but it does not conduct sap upward. The epidermis is the outermost protective layer of the plant. It helps in protection and absorption (in roots via root hairs), but it does not transport sap. The phloem transports food (sugars) from leaves to other parts of the plant. It can move substances both upward and downward, but it does not carry water upward like xylem.
Related Questions
Diffusion occurs when molecules move:
- from lower concentration to higher concentration.
- from higher concentration to lower concentration through a membrane.
- from higher concentration to lower concentration.
- when energy is used.
If the xylem vessels of a plant are plugged:
- The leaves will turn yellow
- No food will be made
- The plant will wilt (shrivel)
- The plant will continue to grow
Force responsible for the ascent of sap is:
- Capillary force
- Root pressure
- Transpirational pull
- All the three
Raisins swell when put in:
- Rain water
- Saline water
- Mustard oil
- Saturated sugar solution