Why Hibiscus sp. are considered more advanced compared to Pinus sp.?
A. Xylem consists of vessel and tracheid
B. Reproduction by producing seeds
C. Phloem consists of sieve tube
D. Has true roots, stem and leaves
Select your answer:
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Microbiology › ViewSuperantigens are
A. cell markers found in some member of a species but not in other members.
B. antigens that evoke allergic reactions.
C. bacterial toxins that activate T cells at a 100 times greater rate than other antigens.
D. body tissues that the immune system mistakes as foreign.
Cytology and Histology › View
Microtubules can form rhythmically beating hairlike structures. Which of the sentences is true about the cilia and flagella?
A. Cilia moves fluid over the surface of a cell while flagella moves the entire cell
B. Flagella is shorter than the cilia
C. The microtubules in cilia and flagella are similar with cytoplasmic microtubules
D. All of the above