[34.3] Unlike eutherians, both monotremes and marsupials:
a. Lack nipples.
b. Have some embryonic development outside the mother's uterus.
c. Lay eggs.
d. Are found in Australia and Africa.
e. Include only insectivores and herbivores.
Give this one a try later!
b. Have some embryonic development outside the mother's uterus.
You are looking at a drop of lake water under a microscope. You observe a large
number of unicellular protists with unique perforated glass-like walls. The cells are
moving around by moving flagella that have fine hair-like extensions. You are most
likely observing:
, a. Diplomonads
b. Dinoflagellates
c. Euglenids
d. Diatoms
Give this one a try later!
d. Diatoms
A student encounters an animal embryo at the eight-cell stage. The four smaller cells
that comprise one hemisphere of the embryo seem to be rotated 45 degrees and to
lie in the grooves between larger, underlying cells (i.e., spiral cleavage).
This embryo may potentially develop into a(n)
A) earthworm.
D) fish.
E) sea urchin.
Give this one a try later!
A) earthworm.
Which of the following is NOT an advantage of the arthropod exoskeleton?
A: It provides protection from predators
B: It provides rigid places for muscles to insert and against which muscles can do
work
C: It enhances sensory perception
D: It reduces waterloss
Give this one a try later!
a. Lack nipples.
b. Have some embryonic development outside the mother's uterus.
c. Lay eggs.
d. Are found in Australia and Africa.
e. Include only insectivores and herbivores.
Give this one a try later!
b. Have some embryonic development outside the mother's uterus.
You are looking at a drop of lake water under a microscope. You observe a large
number of unicellular protists with unique perforated glass-like walls. The cells are
moving around by moving flagella that have fine hair-like extensions. You are most
likely observing:
, a. Diplomonads
b. Dinoflagellates
c. Euglenids
d. Diatoms
Give this one a try later!
d. Diatoms
A student encounters an animal embryo at the eight-cell stage. The four smaller cells
that comprise one hemisphere of the embryo seem to be rotated 45 degrees and to
lie in the grooves between larger, underlying cells (i.e., spiral cleavage).
This embryo may potentially develop into a(n)
A) earthworm.
D) fish.
E) sea urchin.
Give this one a try later!
A) earthworm.
Which of the following is NOT an advantage of the arthropod exoskeleton?
A: It provides protection from predators
B: It provides rigid places for muscles to insert and against which muscles can do
work
C: It enhances sensory perception
D: It reduces waterloss
Give this one a try later!
