1. the 2 Main Parts of the Excretion System of Gastropods Are

Test Questions

Gastopods

1. The 2 main parts of the excretion system of gastropods are:

a. excretory canal and pores

b. flame cells and nephridia

c. nephridia and kidney

d. anus and nephridia

2. Gastropods can sense:

I. sound

II. touch

III. smell

IV. taste

a. II only

b. I, II, III only

c. II, III, and IV only

d. I, III, and IV only

3. Snails have shells made of:

silica
calcium carbonate
calcium bicarbonate
spicules

4．Radula are:

scraping tools within the esophagus
digestive enzymes in the stomach
little teeth-like structures in the crop
little scrapers in the mouth

5. Rhinopores are used for:

I. Detecting food

II. Digestion

III. Identifying possible mates

IV. Respiration

I only
I & III
II & IV
III & IV

6. Gastropod means stomach foot because:

the stomach is in the shape of a foot
the stomach grows within the foot
the stomach lies above the foot
the foot helps to digest its food

7. Gastropod locomotion is by:

I. a muscular foot

II. cilia

III. setae

IV. mucous

I only
I, II, IV only
I, III, and IV only
II and IV only

8. What are the 2 main advantages for reproducing sexually for hermaphrodites?

It is advantageous because one mating event leads to two individuals each producing offspring, doubling the reproductive success rate. Also, it does not require you to spend so long searching for a partner of the opposite sex.

9. Why is having a free-swimming trochophore larva stage advantageous?

It allows the larva to travel away from the parents, thus avoiding competition and increasing thelikelihoodof survival.

10. Draw a simple diagram of a snail and label the tentacles, mantle, foot, and shell.

Bivalves

1.The giant clam’s body is ______compressed.

a) Dorsoventrallyb) longitudinally

c) Laterallyd) not

2. The stage of marine snails and bivalves that has the beginning of a foot, shell, and mantle is the

a) planulab) morula

c) veligerd) trochophore

3.At what stage do the giant clams settle down and become sessile?

a) juvenileb)prepediveliger

c) adultd) larval

4.What structure or process enables for giant clams to breathe?

a) lungsb)diffusion

c) siphond) gills

5.What type of circulatory system do giant clams have?

a) closedb)no circulatory system

c) opend) none of the above

6.Giant clams are best described as

a) carnivoresb) herbivores

c) filter feedersd) parasites

7.What class do giant clams belong to?

a) bivalvesb) chitons

c) sephalopodad) gastropoda

8. Which of the following are not part stages of the life cycle of the giant clam?

a) fertilization b)Trochphores stage

c) Veliger Stage d)Clamonae stage

9. Shells can be either be closed by one or two adductor muscles.

a) true

b) false

10. All giant clams can close their shells fully because they have strong adductor muscles.

a) true

b) false

11. Explain the symbiotic relationship giant clams have with algae.

12. What are the functions of the kidneys and what do they excrete?

13. In terms of evolution, how did the visual receptors migrate to the mantle at the open edges of the shell?

Cephalopod

1. Describe the female’s role in reproduction.

2. List two differences and similarities between cephalopods and cnidarians.

3. Consider one trait of the cephalopod. Explain how it could have evolved.

MULTIPLE CHOICE

1. Cephalopods are:

a) Filter-feeders

b) Carnivorous eaters

c) Herbivorous eaters

d) Decomposers

2. Which of the following statement is not true?

a) Cephalopods first appeared 500 million years ago

b) Cephalopods have the largest brain amongst other invertebrates

c) Cephalopods eat other mollusks

d) An example of a Cephalopod is the crayfish

e) All statements above are true

3. Cephalopods do not include:

a) Squids

b) Octopus

c) Crabs

d) Nautilus

e) All above are examples of cephalopods

4. Cephalopods have eyes similar to:

a) Eyespots in tapeworms

b) The human eye

c) Insects

d) Cephalopods do not have eyes

5. After reproduction, female cephalopods:

a) Continue the cycle of life

b) Stay by their young offspring until they grow independent

c) Die off

d) Searches for a new mate

6. Cephalopods are able to:

a) Learn and retain information

b) Live without the presence of water

c) Distinguish letters and numbers

d) Reproduce up to thousands of offspring at a time

7. A way for cephalopods to defend is to:

a) Camouflage

b) Release ink to distract predators

c) Swim away quickly via jet propulsion

d) Hide in crevices or small spaces

e) All above are examples of defense in cephalopods

8. The anatomy of the squid consists of:

a) Mantle, eyespots, crop

b) Mantle, tentacles, radula

c) Mantle, tentacles, scolex

d) Mantle, tentacles, pharynx

9. Cephalopods belong to the following phylum:

a) Cnidarians

b) Echinodermata

c) Mollusca

d) Arthropoda

10. Cephalopods are found in:

a) Oceans

b) Mountains

c) Lakes

d) Rivers

e) None of the above

Crustaceans 1

Multiple choice

1) The sub-phylum that includes crabs, shrimp, lobsters, etc is:

a) Gastropods

b) Crustaceans

c) Chitons

d) Arachnids

2) Crustaceans have:

a) Maxillary glands

b) Green glands

c) Antennal glands

d) All of the above

3) A crab’s legs receive sensory nerves from the dorsal ganglion

a) True

b) False

Written Answer

1) If the ventral ganglion is responsible for sensory reception in the crabs legs, consider where the dorsal ganglion is and explain what it may control.

Crustaceans 2

Multiple Choice

1. Which of the foods below do King crabs not consume?

a. Fishes

b. Mussels

c. Crustaceans

d. Algae

2. King crabs are ______.

a. Herbivores

b. Carnivores

c. Omnivores

3. Which of the organ below belongs to the king crab’s digestive system?

a. Liver

b. Gullet

c. Alimentary anal

d. Lungs

Written

4. What do king crabs use to tear their food into smaller pieces? Describe the process of digestion after food has been tore apart into smaller pieces.

Crustaceans 3

Quiz questions (multiple choice)–

1) What is the first pair of claws called?

a) Murdering claw & feeder claw

b) Killer claw & feeder claw

c) Butcher claw & chewing claw

d) Attacking claw & eating claw

2) Which is true about the Red King Crab

i) Juvenile mold while growing

ii) Female and male crabs mold in order to mate

iii) male crabs keep their shells for 1 or 2 years

a) i only

b) i & ii

c) i & iii

d) ii & iii

e) i, ii, & iii

3) how many spines are there on the carapace?

a) 50

b) 61

c) 25

d) 33

Short Answer – Describe the functions of the 5 pairs of legs.

Crustaceans 4

1. How long is the incubation till the larvae hatch?

A) A week

B) Two weeks

C) A month

D) Nine months

2. What do true crabs have that other don’t?

A) Gills

B) Internal muscles

C) Tubular lungs

D) Multiple joints

3. What limits crab’s movement?

A) The hard shell

B) The hip joint

C) The leg joint

D) The limbs

4. How does having moist gills help true crabs breathe in oxygen?

Arachnid

1. What Phylum do Arachnids belong to?

2. Describe how Arachnids can reproduce asexually.

3. Explain the general process of sexual reproduction for Arachnids.

4. Give a general overview of what is included in the nervous system.

5. Arachnids have extremely primitive ears that are merely a stretchy membrane strained over a hole in the cuticle. How do you think Arachnids have evolved to have these ears?

6. Are arthropods generally hermaphroditic or in separate sexes?

a. Hermaphroditic

b. Separate sexes

c. Hermaphroditic, but cannot hold both eggs and sperm at the same time

d. Both a. and d.

7. What type of symmetry do Arachnids exhibit?

a. Bilateral

b. Radial

c. Pentamerous radial

d. Arachnids are asymmetrical

8. What is unique about spider’s digestion?

9. Arachnids include which of the following:

a. Crabs

b. Spiders

c. Humans

d. Moths

e. None of the above

10. What are the basics of the Arachnid body plan?

Sea Star

Multiple choice Part /10

Which of the following aspect does not characterize phylum Echinodermata?

Has an oral surface where mouth is located
Has an aboral surface where anus is located
Has eyes
Able to regenerate
All of the above

How do Phylum Cnidarian and Phylum Echinodermata differentiate?

Body plan is radial symmetric
They tend to move slow
Engulf its prey
Most are not poisonous

3. Because sea stars lack a true centralized brain, how does their nervous system work?

A. Have automatic senses to trigger nematocysts

B. Have a nerve net

C. Radial nerves to control balance and direction

D. They have eye spots to replace the lacking of a brain

Which excretory organs apply to sea stars?

Anus, stomach, gonads
Ring canal, radial canal, central disk
Radial nerve, ampulla, podium
No excretory organs

5. Which of the following correctly demonstrates sexual reproduction of a sea star?

I. Budding

II. Regeneration

III. Release sperm or eggs into water to be fertilized

IV. Self fertilization

A. II & III B. Only III C. III & IV D. Only IV

6. Which stage is sea star’s body plan bilateral?

A. Embryo

B. Larvae

C. Eggs

D. Mature sea star

7. How do sea stars capture their prey?

I. Stomach extrudes over prey

II. Seastar use their arms to wraps around prey

III. Uses a muscular pharynx

IV. Have pores that collect nutrients

A. I & II B. I, II, & IV C. Only I D. Only II

8. Which of the four choices given does not apply to the type of feeders sea stars are?

A. Carnivores

B. Scavengers

C. Detritus feeders

D. Primary consumers

9. Which of the following contributes to their respiratory system?

A. Water vasuclar system and by diffusion

B. Dialated portion of a canal and duct (ampulla) and by diffusion

C. Gills and Lungs

D. Cellular respiration

10. How do sea stars move?

A. Flagella

B. Slime

C. Tube feet under arms

D. They cannot move

Written Questions

If plants have vascular systems to help transport water, why do sea stars need a water vascular system when they live in water? / 2

From an evolution standpoint, name one trait that has helped sea stars evolved. Explain. / 3

Compare and contrast phylum Echinodermata with another phylum of your choice between 3 life functions. /4

Sea Urchins

1. When touched by a potential predator, what actions will sea urchins likely take?

a. Try and roll away by doing somersaults / b. Like dogs, drop and play dead
c. Burrow into the ground using their tube feet in the water / d. Point spines to the particular area being touched

2. Where is the sea urchin’s mouth located?

a. They do not have a mouth, they are filter feeders / b. Underneath their body
c. Inside their body that will flip inside out once they see prey / d. each of its tube feet, which also function for locomotion and breathing

3. What are their methods of fertilization?

a. by fertilizing the eggs in the female sea urchin with the sperm from the male / b. by external fertilization, releasing eggs and sperm into the water
c. they are hermaphroditic, they can self-fertilize / d. fertilization occurs in a host organism

4. Sea urchins are…

a. Herbivores, eating only algae and other types of plants / b. Omnivores
c. Carnivores, eating mussels and dead fish on the ocean floor / d. decomposers

5. The five plates (which are also known as "teeth") that surround the mouth and point inwards are called what?

a. Aristotle’s Teeth / b. Aristotle’s Lantern
c. Albert’s Lantern / d. Einstein’s Lollipop

6. Which of the following characteristic is true of sea urchins?

a. Autotrophs / b. Dioecious
c. Hermaphrodites / d. Photoautotrophs

7. How do sea urchins benefit the ecosystem?

a. Break down soil/ make nutrients available to other organisms / b. Rapid reproduction overwhelm predators
c. Limit algae biomass / d. Competition for resources with other organisms

8. Sea urchins are sessile. ____

9. Sea urchins are in the phylum Arthropoda. ____

10. The skeleton of sea urchins is called a test. ____

11. Why are sea urchins called the porcupines of the sea? Why would this be beneficial to the organism in terms of defense mechanism?

12. What is one adaptation that enables sea urchins to better survive in their environment and explain how they have come to have it in terms of evolution.

13. Briefly explain how sea urchins carry out their life functions.

Sea Cucumber

1.) Sea cucumbers are

a. Radially symmetrical

b. Bilaterally symmetrical

c. Asymmetrical

d. Spherically symmetrical

2.) A sea cucumber’s respiratory tree

a. Allows the organism to photosynthesize

b. Can be found in organisms of the same phylum

c. Allows the organism to extract oxygen in its anus

d. Refers to the branches of veins that assist respiration in the organism’s lungs

3.) The circulatory systems of sea cucumbers

a. Are open

b. Are closed with one major vessel parallel to the gut

c. Are closed with two major vessels parallel to the gut

d. Involve a vascular system unaffected by the respiratory tree

4.) The nervous system of a sea cucumber involves

a. A true brain

b. Sensory cells found in the epidermis

c. Nerve endings found in the anterior region

d. Sensitivity to touch, but not light

5.) Sea cucumbers are able to move by

a. Using small feet found on the underside of their bodies to crawl along the sea floor

b. Cannot move

c. Contracting circular and longitudal muscles, similar to worms

d. Shooting water out of specialized pores to propel them through the water

6.) Sea cucumbers can reproduce

a. Asexually and sexually – they are hermaphroditic