Plant tissues Flashcards
How do plants make their own food?
Through photosynthesis, using energy from the sun. This occurs through different organs and tissues in plants
What is the formula for photosynthesis?
Carbon dioxide + Water —> Sugar + Oxygen
3 major plant structures?
Stems, leaves, roots
Stems
Supports and transports. Water gets from roots to leaves
Roots
provides anchorage (grip or hold), absorption, storage.
Leaves
Where photosynthesis occurs
4 plant tissues
Meristematic, dermal tissue, ground tissue, vascular tissue
Meristematic tissue
Undifferentiated, ability to make other cells. Found in root tips and apical meristems. Like stem cells, both unspecilized
Dermal tissue
Protects soft tissue of the plant, controls interactions with plants surrounding. Like epithilal tissue.
Ground tissue
Lies between vascular and dermal tissue, acts as storage and support. Has cells that conduct photosynthesis. Like muscle tissue.
Vascular tissue
Movement of water and minerals for growth or storage, contains 2 main parts. Xylem an Phloem. like connective tissue.
Xylem
Transports water to leaves, walls are reinforced and waterproofed by lignin protein. Provides plant support.
Cell contents die off and ends break down to become a continuous tube (lumen)
Phloem
Transports sugars and nutrients throughout the plant.
Contains sieve plates, allow materials up or down
Contains companion cell, Moves products of photosynthesis thoughout plant in the sieve tubes
Roots structure
Extend into soil to absorb water through root hair, root hair increase surface area.
The root tip is made of cells that help protect the root as it grows. Produces slimy substance which reduces friction (mitosis) called site of growth
Stem structure
transports water from root to leaf (xylem) and transports sugar to entire plant (phloem)
Lignin protein helps support the height of the plant
