Biology in nature

Pictures of plants & biology from nature!! :D

 the corner next to biology classroom :D

 ecosystem in the pound~

 red red red~~ attracting insects for pollination :D

 cactus (adapted for not-in-desert environment)

 more colours (for insect pollination)

 shadow & sunshine!!~ (photosynthesis)

 a bee hive (: related to pollination

green from chlorophyll :P (related to frequency of light wave which reflects green light)

Fruits & Seeds

Apple Dissection

The Variety of Seeds

Facts from the board...

credit for pictures: Lily A (Arisara)

(wasn't able to take pictures during class due to some technical problem, so I borrowed Lily's camera ^^")

3.4) Plant Fertilisation

Topic test coming soon!!

Topic test on Wednesday May 4th, 2011. Be prepared (:
Also, remember to catch up with what they learned during Term 1.

Lily Dissection

Adaptation -structure enables function

Example 1: Lily Flower

• Sepal (the outermost layer) has been mutated so that it looks like petals to attract insects because of its colours.
• Petals has line guiding the insects toward the nectar source.

Example 2: Grass

• They're relying on wind for pollination so they don't have to waste the energy to attract insect.
• Plants relying on wind pollination would produce far more pollens to increase the chance of the pollens falling into the stigma of another plant.

Remember - vector for pollination: wind and insects

Additional knowledge: 

• It is possible for plants to self-pollinated but they try to avoid this because the offspring would be exactly the same as themselves.
• It is also possible for different plant species to cross-pollinated. The offspring is called hybrid. However, a hybrid would never produce pollen for further reproduction.

3.3b) Wind Pollination

3.3a) Insect Pollination