vertebrates and invertebrates Flashcards Preview

B1.2 > vertebrates and invertebrates > Flashcards

Flashcards in vertebrates and invertebrates Deck (3)
Loading flashcards...
1
Q

what is the phylum chordata

A

the phylum chordata contains animals that have a supporting rod running the length of their body.

2
Q

how do scientists sort vertebrates

A

Scientists separate this group into smaller groups because of their features:
how the animal takes in oxygen – lungs, gills or through the skin
thermoregulation – maintains own temperature (homeotherms) or temperature varies with surroundings (poikilotherms)
reproduction – internal or external fertilisation, lay eggs (oviparous) or give birth to live young (viviparous).

3
Q

why can it be difficult to sort some vertebrates

A

Assigning vertebrates to different groups can be difficult as some might have different characteristics, oxygen absorption, thermoreglulation and reproduction methods