quiz Flashcards
true or false?
unlike most other species of plant, bryophytes can close their stomata when water stressed?
false
the gametophyte generation of a moss ___
is haploid
which of the following is not true regarding the plant kingdom?
plants store their photosynthetic product as amino acids
land plants are though to be closely related to
charophytes
the _____ is the haploid generation in a plant life cycle and produces ____. the _____ is the diploid generation of a plant life cycle and produces _____
gametophyte; haploid gametes; sporophyte; haploid spores
which of the following is NOT common to all phyla of vascular plants?
the development of seeds
which of these groups of plants should have gene sequences that are most similar to the ancestor of land plants?
early bryophytes
the result of heterospory is
the existence of male and female gametophytes
the seed coats most important function is
to provide desiccation resistance
true or false?
all chordates have a vertebrate column
false
a terrestrial mollusk without a shell belongs to which class?
gastropods
what are characteristics of arthropods?
protostome development, bilateral symmetry, and three embryonic germ layers
in addition to chordates, which of the following are also deuterostomes?
echinoderms
ecdysis mean to
shed your skin
lichens are a composite organism comprised usually of a algal symbiont and a ____ fungus
ascomycota
which of the following fungal taxa forms arbuscules?
glomeromycota
which of the following taxa possesses the most body segments
chilopoda
which of the following is not true regarding nematodes?
their coelomic cavity is divided
members of the diplopoda are ecdysozoans, eucloemates and protostomate animals?
true
coral is included in class____
anthozoa
which of the following statements regarding animal embryological development is true?
only animals form an embryonic blastula
the most recent common ancestor of animals is
choanoflagellate protist
which of the following is unique to animals
gastrulation
which of the following is descriptive of protostomes?
spiral and determinate cleavage; blastopore becomes mouth
you are trying to identify an organism. it is an animal but it is neither diploblastic or triploblastic. it is most likely a
sponge
what is one characteristic that separates chordates from all other animals?
dorsal, hollow nerve cord
what is a distinctive feature of the Chondrichthyes?
a mostly cartilaginous skeleton
unlike eutherian, both monotremes and marsupials ____
have some embryonic development outside the mothers uterus
which of the following levels of organization is arranged in the correct sequence from most to least inclusive (broadest to most specific)?
ecosystem, community, population, individual
which of the following are important biotic factors?
predation, competition
which of the following is a good description of an ecological niche?
how an organism uses the biotic and abiotic resources in the community
the species richness of a community refers to
the number of different species
a very tasty butterfly evolved to have the same coloration of a butterfly that is not closely related but has high concentrations of extremely toxic compounds in its wings. this is an example of
batesian mimicry
the logistic growth model differs from the exponential growth model in that it
expresses the effects of population-limiting factors on exponential growth
an oak tree produces thousands of acorns, but very few grown into mature oak trees, this is a ____ curve
type III
a biologist is trying to figure out what will happen to a bear population if bear hunting is banned. he had the equations all worked out but then realized he had underestimated that amount of food available to bears. to make his prediction more accurate he should ______ the value of _____ in his equation
increase; K
organisms that live in a homogenous abiotic environment and cooperate to avoid being eaten likely show a _____ pattern of dispersal
clumped
a variety of opossum that lives in an island with no predators lives much longer than its relatives on the mainland, even when both are kept safely in a zoo. the island variants genes have been selected from slow aging whereas the mainland variants genes have been selected for quick reproduction. the island opossum exhibits _____ selection and the mainland opossum exhibits _____ selection
K; r
the biggest difference between flow of energy and the flow of chemical nutrients is that
nutrients are recycled, energy is not
the logistic growth model differs from the exponential growth model in that
the logistic growth model expresses the effects of population limiting factors on exponential growth
what is the nutrient rich blood called in an open circulatory system
hemolymph
humans are
chemoheterotrophs
the most diverse and numerous animals are
arthropoda (spiders, crabs, insects)
