Download asdfs

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts

Plant reproduction wikipedia , lookup

Sea urchin wikipedia , lookup

Sexual reproduction wikipedia , lookup

Transcript
Echinoderms
Review
Starfish belong in the
Animalia
KINGDOM _______________
Echinodermata
PHYLUM _______________
CLASS ___________________
Asteroidea
invertebrates
Echinoderms are _________________
vertebrates
invertebrates
radial
Adult echinoderms have ______________
symmetry.
no
bilateral
radial
Deuterostomes
_____________ are organisms
whose anus develops from the
blastopore area in the embryo.
Since a starfish has NO INTESTINE,
the nutrients are absorbed by the
digestive glands
_______________
Echinoderms have an endoskeleton
made of calcium carbonate plates
ossicles
called _______________.
In Latin the name “echinoderm” means
__________________
Spiny skin
Name one of the 3 characteristics
your book lists that are found only
in echinoderms.
Endoskeleton made of OSSICLES
Water vascular system
Tube feet
Sea stars (starfish) belong to the
Class _________________
Asteroidea
The mouth of a starfish is located
on the _____________
surface.
oral
All of these organisms belong to
Echinodermata
the phylum _______________
(Echinoderms)
Water enters the water vascular
system through small pores in the
madreporite
__________________.
open
Starfish have _____________circulation.
The small movable suction cupped
extensions of the water vascular
system which aid in locomotion and
feeding are called _____________.
tube feet
What is the function of the ampullae?
Squeeze to control water entering
and leaving the tube feet
The seastar can turn its ___________
cardiac
stomach inside out through its mouth
when it eats.
The stone canal, ring canal, and radial
canal are all parts of the
water vascular system.
________________
Nutrients are absorbed in the
digestive glands
________________in
a starfish.
Tell a function of the tube feet.
Locomotion
Hold onto & pry open clam shells
Gas exchange/remove nitrogen waste
The network of water filled canals
connected to the tube feet is called
the _________________
Water vascular system.
carnivores
Most starfish are _______________.
Carnivores
herbivores
omnivores
This organ absorbs nutrients in an
earthworm and a clam but is missing in
starfish
intestine
The spines on the surface connect
into the ____________ inside.
Ossicles of the endoskeleton
Type of reproduction seen in starfish
Asexual
Sexual
They can do both!
Symmetry seen in echinoderm larvae
bilateral
T or F
Most echinoderms are hermaphrodites.
False, they have separate sexes.
Fertilization in echinoderms is
_______________
external
External
internal
Seastars “breathe” by exchanging
gases through their
_____________________________.
skin
gills and skin on their tube feet
Echinoderms are missing all of these
organs except ____________.
digestive
Circulatory excretory respiratory
digestive
The ability of starfish to regrow
lost arms is called regeneration
________________.
The surface of a starfish opposite
aboral
from the mouth is the _____________
Surface.
cardiac
The ___________________
stomach is
extruded out of the mouth during
feeding
What is the function of the
pedicillariae?
Keep surface of starfish free of
algae and small organisms that might
damage or block it
eyespots
Starfish have _____________
at the
ends of each arm that can sense
light and dark
The anus and madreporite are on the
____________
surface of a starfish.
aboral
Special kind of
radial symmetry
seen is 5 armed
starfish pentaradial
All echinoderms are MARINE.
live in oceans
That means they ____________.
have military-like camouflage
live in the ocean
march in lines like soldiers
stay in one place
Tell the body system each part
belongs to:
vascular
Madreporite Water
_____________________
nervous
Nerve ring
_____________________
Water vascular
Ring canal
______________________
Ossicles
______________________
Skeletal
Reproductive
Gonads
______________________
Respiratory/excretory
Skin gills
______________________
Digestive
Cardiac stomach ___________________
Type of symmetry
seen in this
echinoderm
radial
Tube feet are found along the
__________________
groove.
ambulacral
When you cut into the starfish, the
space you see around the internal
coelom
organs is the ______________
Mantle
cavity
pseudocoelom
coelom
pericardial
cavity
The ventral surface is also called the
oral surface.
_______
TRUE or FALSE
Starfish are hermaphrodites
False. They have separate sexes
This diagram represents the 3 structures you
learned about on the surface of a starfish.
spines
The blue structures are _____________
protection
for _____________________.
The red structures are ____________
Skin gills
for Exchanging
____________________
gases/removing nitrogen waste
The green structure is a _____________
pedicellaria
for _________________________
keeping the surface free of organisms
A
B
E
C
D
MADREPORITE
A = _________________
STONE CANAL
B = _________________
RING CANAL
C = _________________
RADIAL CANAL
D = _________________
F
AMPULLAE
E = ___________________
TUBE FEET
F = ___________________
What do the typhlosole in an earthworm, the
ridges on the gills in a clam, and the skin
gills of a starfish have in common?
All are structures used to
INCREASE SURFACE AREA
Asteroidea comes from the Latin
star
word meaning _______________
The only invertebrates that are
NOT PROTOSTOMES are the
_________________________
echinoderms
What is the plural of pedicellaria?
pedicellariae
All echinoderms are MARINE. This means
they _______________
Live in salt water (oceans)
How is reproduction in a starfish
different from that of an earthworm?
Earthworms= hermaphrodites
Starfish= separate sexes; can use
regeneration for asexual reproduction
Explain how diffusion is important to starfish
Diffusion of gas molecules from
high concentration to low concentration
is what causes gas exchange for breathing
Which of the following is an echinoderm
larva?
A
B: Echinoderms have a:
B
BIPINNARIA larva with wings
Tell one way the starfish are similar to
clams.
Both have: NO CEPHALIZATION
Open circulation (NO blood vessels)
eucoelomates
invertebrates
separate sexes
sexual reproduction
with external fertilization (marine clams)
indirect development (start as larva)
have digestive gland that makes bile and
absorbs nutrients
have stomach attached to digestive gland
Tell one way the starfish are DIFFERENT
FROM clams.
Clams:
Protostomes
Have an intestine
Heart pumps hemolymph
Gills exchange gases
Kidney to remove nitrogen
Starfish:
Deuterostomes
No intestine
No heart
Gases exchanged thru skin gills
no excretory organs/
nitrogen waste out thru skin gills
------water vascular system
Shell for protection
endoskeleton/spines for protection
Filter feeders
carnivores
some have internal fertilization external fertilization
(freshwater clams)
Sexual reproduction only
Can do sexual/asexual reprod.
Tell one way the starfish are similar to
earthworms.
Both have: true coelomates
invertebrates
sexual reproduction
external fertilization
Tell one way the starfish are DIFFERENT
FROM earthworms.
Earthworms:
Starfish:
Protostomes
Deuterostomes
Intestine to absorb nutrients
digestive glands absorb nutrients
Heart (aortic arches) pumps blood No heart
Nephridia to remove nitrogen
no excretory organs/
nitrogen waste out thru skin gills
------water vascular system
Hydrostatic skeleton
endoskeleton/spines for protection
Closed circulation
Open circulation
Direct development
Indirect development
Cerebral ganglia/nerve cord
Nerve ring, radial nerves, ganglia
Why are echinoderms thought to have
evolved from a bilaterally symmetrical
ancestor?
They have a bilaterally symmetrical larva
Which 2 structures you learned about
are contained within the ambulacral
ridge?
Radial nerve & radial canal
Name another echinoderm besides a
starfish.
Sea lily, feather star, brittle star, sea urchin,
Basket star, sand dollar, sea cucumber
indirect
Starfish have __________development.
They start out as a larva that looks different from the adult.
direct
indirect
Name one of the structures found on the
surface of a starfish and tell its function.
Spines- protection
Pedicellaria-pinchers that keep surface
clear of organisms
Skin gills- exchange gases/remove nitrogen waste
True OR False
Sea stars can reproduce both sexually
and asexually.
TRUE
They have separate sexes and can use regeneration.
A sea star’s nervous system does NOT include
______________
a brain
Nerve ring
nerve net
radial nerves
cerebral ganglia
Explain how a mollusk trochophore
larva is different from an echinoderm
bipinnaria larva.
Trochophore larvae are egg shaped with a ring of
cilia to help them swim;
Bipinnaria have wings