Abeka 7th Grade 2019 Science Test 10

Many crustaceans have an especially hard shell called a(n) ____________, which covers their first body region to protect the vital organs.

carapace

What principle of biology states that all living things are made of cells and that all cells come from preexisting cells?

cell theory

What are the smallest living units of all living things called?

cells

The arthropods that have flattened bodies and one pair of legs per abdominal segment are _______________.

centipedes

The combined head and thorax of crustaceans and arachnids is called a(n) __________________.

cephalothorax

What structure do decapods use for protection and for capturing food?

cheliped

What group of crustaceans are known for having only one eye?

copepods

You see a decapod that appears to have no abdomen; but as you look more closely, you notice that its abdomen is tucked under its carapace. What type of crustacean do you see?

crab

What arachnid resembles a spider but is nonvenomous and lacks a constriction between the two body regions?

daddy longlegs

What structure of a microscope affects the amount of light that passes through the slide?

diaphragm

An organism that has an organized nucleus is a _________________.

eukaryote

What is the name of the lens of a microscope through which the image is viewed?

eyepiece

The group of mollusks that is designed to crawl on their stomachs are the ____________.

gastropods

What is the scientific study of heredity called?

genetics

Which group of algae includes volvox?

green algae

If the alleles for a particular trait are different, the organism is _______________ for that trait.

heterozygous

The law of _________________ __________________ says that the allele inherited for one trait does not affect the allele inherited for another trait.

independent assortment

The crustaceans that are known for their bioluminescent ability are _________.

krill

An organism that can be seen by the unaided eye is considered ________________.

macroscopic

What do decapods use to hold their food as they chew?

maxillipeds

What is the study of the structure, characteristics, and environment of fungi called?

mycology

The group of roundworms that are considered to be the most abundant animals are the ______________.

nematodes

The organisms that are distinguished by their slipper shape and cilia are the _______________.

paramecia

A family tree that includes information on a genetic trait being studied is a(n) ___________ chart.

pedigree

The physical appearance that results from the alleles an organism inherited for a particular trait is the ______________.

phenotype

What are animal-like organisms made up of a single cell called?

protozoa

What is the forward extension that protects a decapod's head?

rostrum

What is the largest group of fungi?

sac fungi

What type of fungi is parasitic and often infects grains?

smuts

What group of protozoa includes plasmodium, which causes malaria?

sporozoans

On what part of a microscope is the slide placed?

stage

What process occurs when a ribosome "reads" RNA to make a protein?

translation

The only truly terrestrial crustaceans are called _____________.

woodlice (or pillbug)

To which group of algae do diatoms belong?

yellow algae

An egg cell that has been fertilized is a ______________.

zygote

What are segmented worms?

Annelids

Who is known as the Father of Microbiology?

Anton van Leeuwenhoek

What surrounds and protects the other parts of the cell?

Cell membrane

What goes around the cell?

Cell wall

Where does photosynthesis occur?

Chloroplast

What includes jellyfish and has tentacles with cnidocytes?

Coelenterates

What jelly-like substance is the largest portion of the cell?

Cytoplasm

What substance stores the information that determines the genetic traits of an organism?

DNA

What have tube feet, radial symmetry, and spines/includes starfish and sand dollars?

Echinoderms

What includes octopuses and clams?

Mollusks

What is the central portion of the called?

Nucleus

What is one of the "little organs" of the cell?

Organelle

What includes flukes and tapeworms?

Platyhelminths

What English scientist discovered cork cells?

Robert Hooke

What are multicellular organisms without a nervous system?

Sponges

What stores food materials within the cell?

Vacuole

What group of crustaceans are known for having four pairs of legs pointing forward and three pairs pointing backward?

amphipods

A single parent organism can produce offspring without the union of reproductive cells if it uses ____________ reproduction.

asexual

What is an example of a crustacean that is a cirripede?

barnacles

The ___________ ___________ spider is known for having a red or orange hourglass shape on the underside of its abdomen.

black-widow

What group of crustaceans breathe with gills that are located on their legs?

branchipods

What potentially dangerous North American spider is known for the violin-shaped marking on its abdomen?

brown recluse