B5 revision

Cell Division

• Mitosis
  • Where? Body cells
  • Why? Growth and repair
  • Number of new cells: 2
  • Number of chromosomes produced: 46
  • Clones of parent cell? Yes
• Mieosis
  • Where? sex cells
  • Why? Making gamates
  • Number of new cells: 4
  • Number of chromosomes produced: 23
  • Clones of parent cell? No

Phototropism

• Phototropism is when a plant apperas to grow towards the light
  • This is because the auxin (plant growth hormone) moves to the shady side of the plant, making that side grow faster and bend towards the light.
  • This helps with photosynthesis as more pf the plant is lit up.
• Darwin had 3 plants, he put a metal cap on the tip of one, the middle of the other, and the bottom of the 3rd.
  • The 1st one…