In which of the following is auxin involved?
a. embryonic development
b. formation of plant parts
c. formation of lateral roots
d. differentiation of vascular tissues
e. auxin is involved in all of these
E
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The ABO blood types are examples of
a. multiple alleles and codominance. b. pleiotropy. c. multiple alleles. d. incomplete dominance. e. codominance
Consider the cladogram shown. Based on this cladogram, which species has the greatest number of ancestral character states (plesiomorphies)?
A. 1 B. 2 C. 3 D. 4 E. 5 F. 6
Which of these are enclosed by a double membrane?
A) mitochondria and chloroplasts B) the nucleus and the Golgi apparatus C) ribosomes and lysosomes D) vacuoles and the rough endoplasmic reticulum E) the smooth endoplasmic reticulum and ribosomes
Which one of the following nonhormonal chemical messengers is important in local control of blood flow and blood clotting?
A) prostaglandins B) nerve growth factor C) tumor angiogenesis growth factor D) histamine E) epidermal growth factor