Velocities for transport in the phloem are measured by using a technique which detect water flow;

#Question id: 15289

#Unit 5. Developmental Biology

#Question id: 5441

#Unit 8. Inheritance Biology

Two pure line of corn have mean cob length of 15 cm and 5 cm, respectively. 6 polygenes involved in this trait exhibit additive gene action. Crossing these two lines is expected to produce a progeny population with mean cob length of

#Question id: 18801

#Unit 13. Methods in Biology

#Question id: 10160

#Unit 6. System Physiology – Plant

Which of the following statements about the C4 cycle is true ?

a.) C4 plants uses the enzyme phosphoenolpyruvate carboxylase (PEPCase), rather than rubisco

b.) Unlike rubisco, O2 does not compete with HCO3 − in the carboxylation catalyzed by PEPCase

c.)  initial carboxylation catalyzes in bundle sheath cells, four-carbon acids formed and flow across the diffusion barrier to the mesophyll cells

d.) during decarboxylation, releasing CO2 that is refixed by rubisco via the Calvin–Benson cycle

#Question id: 10889

#Unit 10. Ecological Principles

Which of the following ecosystem that is lower Productivity/Biomass ratios and energy transfer rates to higher trophic levels are slower