Plant growth regulators _____
A) only act by altering gene expression
B) often have a multiplicity of effects
C) function independently of other hormones
D) affect the division and elongation, but not the differentiation, of cells
B
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Phylogenetic trees show inferred evolutionary relationships in the form of multiple branching lineages connected by nodes.
Answer the following statement true (T) or false (F)
Respond to statements 90–94 with reference to the flower parts
listed below. a. megaspore b. microspore c. ovule d. ovary e. seed D 90. This structure gives rise to the female gametophyte. D 91. This structure is female and haploid. M 92. This gives rise to haploid pollen grains. D 93. The egg is ultimately derived from this structure. D 94. During early development, the plant embryo is most intimately associated with this structure.
Most carbon dioxide is transported in the blood plasma in the form of ________
Fill in the blank(s) with correct word
When a parent herring gull arrives at the nest with food, a chick will orient to and peck at the red spot on the parent's bill. The parent will then regurgitate the food into the chick's open mouth and the chick swallows it. What is this set of behaviors an example of?
A. innate releasing mechanism B. sign stimulus C. taxis D. stimulus-response chain E. fixed action pattern