Biology II Chapter 28.1-28.3 Review

How many pairs of legs are there on most body segments of a centipede?

1

Which of the following habitats do arthropods occupy?

air, land, & sea

The larvae of many marine annelids are ecologically important because they

are eaten by fishes and other marine animals.

The respiratory organ in terrestrial chelicerates is the

book lung.

Which of the following is NOT a stage of complete metamorphosis? a. adult b. pupa c. nymph d. larva

c. nymph

pheromone

chemical that affects other individuals

spinneret

contain silk glands

Choanocytes containing nematocysts are a characteristic associated with cnidarians.

false

If an arthropod has antennae and its body is divided into a cephalothorax and an abdomen, the arthropod is classified in the group called chelicerates.

false

If an insect exists as a nymph before becoming an adult, the insect goes through complete metamorphosis.

false

In a crayfish, the carapace is the part of the skeleton that covers the abdomen.

false

In the Portuguese man-of-war, a single tentacle acts as a balloonlike float.

false

The mouthparts of insects consist of three pairs of appendages, including a pair of chelicerae.

false

The process in which an arthropod sheds its skeleton and manufactures a larger one is called flexing.

false

As arthropods evolved, it led to

fewer body segments and more specialized appendages

cephalothorax

fused head and thorax

caste

group of individuals that perform a particular task

society

group of related animals of same species that work together

What does molting enable arthropods to do?

grow

If a butterfly touches sugar water with one of its legs, it usually will begin to feed. If it touches salt water, it usually will not feed. The most likely explanation for this difference in response is that butterflies

have chemical receptors for taste on their legs.

An immature grasshopper resembles an adult grasshopper but does not have wings. Therefore, grasshoppers undergo ? metamorphosis.

imcomplete

mandible

jaw

The appendages of arthropods are

jointed and extend from the body wall.

One difference between a nymph and a larva is that a nymph

resembles an adult of the same species, but a larva does not.

List 3 features that are present in the body plan of arthropods.

segmented, exoskeleton, jointed appendages

spiracle

small openings for breathing

appendage

structures that extend from the body wall

Spiders feed by

sucking up prey tissues that have been liquefied by enzymes.

Bivalve communities that live near undersea volcanic vents obtain their food mostly from

symbiotic bacteria.

In a crayfish, the chelipeds have large claws.

true