Wednesday, 11 April 2012

Symbiosis - Commensalism

Names : Theodor Lim, Jovan Ng and Kevin Tay
Relationship : Commensalism

Animal A : Army Ants
Animal B : Bird
Who benefits : The bird

The bird feeds on the insects or arthropods that the ants have left behind after their march.  There is no break in food availability because ants swarm in almost all seasons and weather.

Symbiosis - Parasitism

Team members: Ryan Pek, Charles, Kuang Seng
Relationship: Parasitism
Animal A: Tick
Animal B: Dog

The tick gets nutrients from the dogs blood by sucking it out and can cause diseases to the dog such as Lyme disease and babesiosis.

Symbiotic relationships - plants(parasitism)

Team Name: Group 5 (Choy Rui Zhi, Isaac Gan, Malcolm Ang)
Relationship: Symbiotic relationships between plants (parasitism)
Plant A: Mistletoe (gets nutrients from the host plant)
Plant B: Silver Birch (nutrients gets lost)

Symbiosis-Predator and Prey relationship

Group members: Denzel Supriyadi, Ryan Chew, Nicholas Tan and Ruo Song

Relationship: Predator and prey relationship

Frog: Eats the fly and get nutrients

Fly: Gets eaten

Symbiosis - Mutualism

Team Members: Matthew Phong, Leonard See, Yan Kai and Shawn Liew.

Relationship: Mutualism
Animal A: Red-Billed Oxpecker
Animal B: Impala


The Red-billed Oxpeckers feed on the ticks on the Impalas. The Red-billed Oxpeckers have a supply of food while the itch that the Impalas have will be removed due to the Red-billed Oxpeckers eating away the ticks which causes the itch.

Thursday, 29 March 2012

Activity 2


Flowering Plants
Bear flowers
Males have stamens
Females have carpels
Bear fruits
Bear Seed-containing fruit

Non Flowering Plants
 Do not have fruits or flower ( e.g. horsetails and Ferns)
 Reproduces by spores
 The spores are being dispersed by the wind

Activity 2

-Only group of animals to posses feathers
-Has bills, instead of teeth. Bills are toothless mandibles covered with a horny sheath of keratin
-Egg laying
-Warm blooded

-Presence of gills
-Have scales and fins
-Cold blooded
-Egg laying

-Have hair/fur
-Jaw Joint
-Mostly give birth to young, some would lay eggs (e.g. platypus)
- Tooth replacement
- 3 middle ear bones
- females produce milk to feed their young

-Dry skin with scales or scutes
-Spinal columns and a strong skeletal system with a rib cage.
-Cold Blooded
-No External Ears

-Breathe with skins and gills
-Moist Smooth Skin
-A three-chambered heart
-Webbed Feet
-Lays many egg

Activity 2

Done by: Shawn Liew Hong Wei, Foong Yan Kai, Nicholas Lee Zhen Wei, Jovan Ng and Sherman Tan Xuanming

Monera characteristics:

- Unicelluar
- Prokaryotic (Absence of nucleus)
- Presence of cell wall

Protista characteristics:

- Eukaryotic (Presence of nucleus)
- Presence of mitochondria
- Lives in moist environment 
- Unicelluar

Fungi characteristics:

- Non Vascular
- Eukaryotic (more closely related to animals than plants)
- Presence of chitinous cell wall 
- Reproduced by spores
- Obtain nutrients by absorbing from dead nutrients  


Activity 2

An invertebrate is an animal without a backbone.

Invertebrates is very diverse, with many different species such as:

Only 1 characteristics is common among the invertebrate; lack of a backbone, thus making them soft-bodied.
They have 2 types of body, radical symmetry and bilateral symmetry.
Some have a exoskeleton, some have shells.

Nicholas Tan
Choy Rui Zhi

Activity 1

Activity 1