What type of cell activity occurs in the meristem regions of plants?
A) Increased water uptake of cells
B) Secondary growth
C) Mitosis
D) Storage of sugar
E) Photosynthesis
C
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How do somatic neurons and autonomic neurons differ? (Check all that apply.)
_____ Somatic neurons innervate the body surface, while autonomic neurons innervate internal structures. _____ Somatic neurons control skeletal muscle, while autonomic neurons control smooth and cardiac muscle. _____ Somatic neurons control exocrine glands, while autonomic neurons do not. _____ Somatic neurons control their effectors directly, while autonomic neurons use a series of neurons. _____ Somatic neurons are always excitatory, while autonomic neurons may be either excitatory or inhibitory.
Which of these are major causes of diarrhea?
A) infection of the lower intestinal tract B) infection of the upper intestinal tract C) hormonal stimulation D) nervous stimulation
Explain why rare recessive alleles are more likely to produce a recessive phenotype as a result of inbreeding
What will be an ideal response?
Which structure in the leaf controls the opening and closing of the stroma?
a) spongy mesophyll b) guard cells c) epidermis d) cuticle