Amphibians
How do baby amphibians breathe?
gills
Name a kind of cartilaginous fish.
shark or skate
What is a baby amphibian called?
larva or larvae
How many legs do spiders have?
8
Are crustaceans aquatic?
yes
How do most amphibians reproduce?
They lay eggs in water. They are oviparous.
What helps fish to move easily in the water?
fins, streamlined shape (like a torpedo)
Where do amphibians live when they are young?
in water
What is the "operculum"?
It covers and protects the gills of bony fish.
Give two examples of crustaceans.
crab, lobster, crayfish, prawn, etc.
How do adult amphibians breathe? How is it different from the larvae?
They have lungs and breathe through their skin (cutaneous respiration). Larvae breathe with gills only.
What is the swim bladder used for?
to float
What is the name for the process of body change in an amphibian’s life?
metamorphosis
What are "chelicerae"?
They are connected to a poison gland to catch prey or grip.
What is one characteristic of animals in the Myriapods group?
The body is divided into segments.
How are anurans different from urodeles?
Adult anurans (frogs) have 4 limbs. Their hind legs are adapted for jumping. They have no tail. External fertilisation.
Adult urodeles (salamanders, newts) have a long tail and 4 limbs. Internal fertilisation.
Name 2 differences between bony fish and cartilaginous fish.
Bony fish : have an operculum, have a swim bladder, have a bone skeleton, mouth is in the front, homocercal caudal tail
Cartilaginous fish: no operculum, cartilage skeleton, mouth is ventral, heterocercal caudal tail, no swim bladder
Do adult amphibians need water? Why?
Yes. They need water to live and to reproduce.
What is the head and thorax together called in some animals? Name an animal that has one.
cephalothorax
arachnids, crustaceans
What are three characteristics of insects?
3 body segments, 3 pairs of legs (6 total), antennae, compound eyes, wings
What does "poikilotherm" mean?
the body temperature is not constant
What is the lateral line and what does it do?
It is a sensory organ that is used to detect movement in water, obstacles, predators, food...
Describe the main stages of metamorphosis
egg, larva, adult
What is the difference between the legs of centipedes and millipedes?
Name 3 differences between insects and arachnids.
cephalothorax, body segments, antennae, eyes, legs, wings