BIO 109 unit 2 Flashcards
(14 cards)
If a species has no teeth, no urinary bladder, and females have only one ovary, what group does that species belong to?
-amphibians
- non-bird reptiles
-mammals
-birds
-chondrichthyans
Birds
Pharyngeal slits appear to have functions first as :
Suspension feeders
components of the jaw
gill slits
portions of the inner ear
no function
suspension feeders
Why is the amniotic egg considered an important evolutionary breakthrough?
it allows for the incubation of offspring in a terrestrial environment
Which of the following is not a true statement concerning the order Primata?
- Early species were small arboreal
-Their traits were shaped by the demands of the trees
-they descended for the insectivores late in the Cretaceous period
- all of them are true
all
what traits did the archaeopteryx have in common with living birds species?
feathers
A person working with plants may removes apical dominance by doing what to the plant?
pruning
The growth ring that contributes to the diameter of the girth of a tree are the results of :
secondary growth
Root hairs are important to a plant because they?
Increase the surface area for absorption
Starting from the tip of a developing root in a typical angiosperm and moving to the above-ground stem, what is the correct order of structures?
root cap, zone of maturation (differentiation), zone of cell division, zone of elongation.
root cap, zone of cell division, zone of elongation, zone of maturation (differentiation).
root cap, zone of cell division, zone of maturation (differentiation), zone of elongation.
zone of cell division, root cap, zone of maturation (differentiation), zone of elongation.
zone of cell division, zone of elongation, zone of maturation (differentiation), root cap
root cap, zone of cell division, zone of elongation, zone of maturation (differentiation).
Based on the ABC model, what would be the structure of a flower (in a cross-section of the flower, from the outside to the center) that had normal expression of genes C and B but lacked expression of gene A?
carpel-petal-petal-carpel
carpel-stamen-stamen-carpel
sepal-petal-petal-sepal
sepal-sepal-carpel-carpel
carpel-stamen-carpel-stamen
carpel-stamen-stamen-carpel
Growth that results in an increase in the girth of a plant is what kind of growth?
Group of answer choices
primary
longitudinal
radial
lateral
secondary
secondary
Which of the following are the water-conducting cells of xylem, have thick walls, and are dead at functional maturity?
Group of answer choices
parenchyma
collenchyma
sclerenchyma
tracheids and vessel elements
sieve-tube elements
tracheids and vessel elements
Unlike eutherians, both monotremes and marsupials:
Group of answer choices
lack nipples.
have some embryonic development outside the mother’s uterus.
lay eggs.
are found in Australia and Africa.
include only insectivores and herbivores.
Which of the following statements has the most supporting evidence?
Group of answer choices
Humans and apes represent divergent lines of evolution from a common ancestor.
Humans evolved from New World monkeys.
Humans have stopped evolving and now represent the pinnacle of evolution.
Humans evolved from chimpanzees.
Humans and apes are the result of disruptive selection in a species of gorilla.
Humans and apes represent divergent lines of evolution from a common ancestor.
