Zusammenfassung der Ressource
B1.2 Vertebrates and
invertebrates
- By Sadia Ali 10B
- Vertebrates
- animals that have a
backbone
- they belong to the
phylum chordata
- Invertebrates
- animals that don't
have a backbone
- they are both divided
into smaller groups
- characteristics to
group vertibrates
- the way they absorb
oxygen for respiration
- Fish have gills
- other groups of vertebrates
have lungs
- some vertebrates reproduce
using external fertilisation
- this is where the adult female
releases her eggs into the water
where they are fertilised by
sperm released by an adult male
- other vertebrates reproduce
using internal fertilisation
- many vertebrates
in this group then
lay eggs
- Other characteristics
- Homeotherms
- an animal that keeps its body
temperature more constant
than the surroundings, and
often warmer, by releasing heat
from reactions in their body
- poikilotherms
- body temperature varies
with the temperature of
their surroundings