The slender stalk that connects the flattened leaf blade to the stem in most dicots is the
A. meristem.
B. petiole.
C. stele.
D. receptacle.
E. vein.
B. petiole.
You might also like to view...
What is the function of cyclic dimeric GMP in bacterial global regulation systems?
A. It converts GTP to cGTP. B. It acts as a secondary nucleotide messenger. C. It is a sensor kinase. D. It is an autoinducer.
Molecules
A. are derived from the chemical bonding of two or more atoms. B. differ in their physical properties from the atoms from which they were derived. C. are important to biological processes. D. can form from the covalent bonding of two or more atoms. E. All the choices are correct.
Construction of a beaver dam creates a deep pool where fish and aquatic invertebrates can live. The beaver is acting as a(n)
1.Exotic species 2.Indicator species 3.Invasive species 4.Keystone species
Which chemical secreted in the alveoli reduces surface tension?
a. oxyhemoglobin b. pulmonary surfactant c. carboxyhemoglobin d. secretory IgA e. mucus