In tropical water, the photic zone in the open ocean can extend down to:
a. 10 m.
b. 20 m.
c. 100 m.
d. 200 m.
e. 1000 m.
D
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Which type of epithelium functions in diffusion?
a. simple squamous epithelium b. stratified squamous epithelium c. cuboidal epithelium d. simple columnar epithelium e. simple pseudostratified columnar epithelium
Where do antigen-presenting cells interact with
T cells?
a. the thymus b. the pituitary gland c. the lymph nodes d. the adrenal glands e. the red bone marrow
What are the differences between metaphase I and metaphase II of meiosis?
What will be an ideal response?
Which of the following is a potential advantage of introducing apomixis into hybrid crop species?
A) Cultivars would be better able to cope with a rapidly changing environment. B) They would have a larger potential genome than inbred crops. C) All of the desirable traits of the cultivar would be passed on to offspring. D) They would benefit from positive mutations in their DNA.