In the process of fertilization in conifers, the pollen tube grows to which structure?
a. archegonium
b. antheridium
c. microspores
d. pollen grains
e. microsporangia
a
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The organ system that protects the underlying tissues from abrasion, prevents dehydration, and aids in regulating body temperature.
A) Muscular
G) Respiratory
B) Reproductive
H) Skeletal
C) Digestive
I) Nervous
D) Cardiovascular
J) Endocrine
E) Integumentary
K) Lymphatic
F) Urinary
Which body defense is neutralized by the type III secretion system of Yersinia pestis?
A. Antibodies B. Complement C. Phagocytes D. TH cells E. Cytotoxic T cells
All prokaryotes are in the domain ________.
A. Bacteria B. Archaea C. Prokarya D. Prokaryotes are in different domains.
Miller's experiment showed that life could arise via chemical evolution.
Answer the following statement true (T) or false (F)