Module 12 (vocabulary is on Biology ipad app)

Question 0

See diagram on page 391 in text book, question #3

Answer 0

a. antennae
b. antellules
c. cephalothorax
d. abdomen
c. telson
f. uropods
g. swimmerets
h. carapace
i. walking legs
j. chelipeds

Question 1

Name the five common characteristics among the arthropods.

Answer 1

Exoskeleton, body segmentation, jointed appendages, open circulatory system, and a ventral nervous system are the common features of arthropods.

Question 2

See diagram on page 391 in text book, question #4

Answer 2

a. eye
b. brain ganglia
c. stomach
d. gonad
e. heart
f. pericardial sinus
g. intestine
h. anus
i. nerve cord
j. digestive glands
k. sternal sinus
l. mouth
m. esophagus
n. green gland

Question 3

Explain the flow of blood in a crayfish, starting from the pericardial sinus.

Answer 3

look in answer key on page 38, #5

Question 4

What purpose does the green gland serve?

Answer 4

It cleans the blood of impurities.

Question 5

What structures (besides the gills and gill chamber) are vitally important for respiration in a crayfish?

Answer 5

The swimmerets and maxillae are important.

Question 6

What happens when a crayfish loses a limb.

Answer 6

The injury gets sealed off to prevent bleeding, and then a new limb regenerates.

Question 7

Where do the fertilized eggs of a crayfish go?

Answer 7

They are attached to the swimmerets.

Question 8

Why do arthropods molt?

Answer 8

They molt because their exoskeletons get too small for their growing bodies.

Question 9

What two appendages are responsible for taste and touch in a crayfish?

Answer 9

The antennules and antennae are are responsible for taste and touch.

Question 10

What five characteristics set arachnids apart form the other arthropods?

Answer 10

Four pairs of walking legs, two segments in body, no antennae, book lungs, four pairs of simple eyes.

Question 11

What are the three basic types of webs that siders spin?

Answer 11

sheet web; tangle webs; orb webs

Question 12

Do all spiders use their silk to spin webs?

Answer 12

no

Question 13

Why are the spider’s lungs called book lungs?

Answer 13

The lung has many thin layers that look like the pages of a book.

Question 14

What four characteristics set insects apart from the other arthropods?

Answer 14

Three pairs of walking (or jumping) legs, wings, three segments in body, one pair of antannae.

Question 15

Why don’t insects have respiratory systems?

Answer 15

Insects do not need respiratory systems because of a complex network of tracheas that allow air to travel throughout the body.

Question 16

If an insect goes through a pupa stage, does it perform complete metamorphosis or incomplete metamorphosis?

Answer 16

complete metamorphosis

Question 17

What four types of wings exist among insects?

Answer 17

membranous wings, scaled wings, leather-like wings, and horny wings

Question 18

For each letter below, indicate the order of insects being described:

a. Insects with two leather-like wings and two membranous wings
b. Social insects with membranous wings
c. Insects with two membranous wings and two membranous balancers
d. Insects with two horny wings and two membranous wings
e. Insects with scaled wings

Answer 18

a. Orthoptera
b. Hymenoptera
c. Diptera
d. Coleoptera
e. Lepidoptera