Compare the functions of the stem and the root in plants

Simplify the expression to a single term. Support your answer graphically.

$$1-4sin^2xcos^2x$$

(a) Describe the primary function of a flower. (b) Describe two ways in which different plants carry out this function,

_____ layer of cells just within the endodermis that gives rise to lateral roots.

Define apical meristem and describe where on a plant it is found.

A 0.20-m-diameter, thin-walled steel pipe is used to transport saturated steam at a pressure of 20 bars in a room for which the air temperature is $25^{\circ} \mathrm{C}$ and the convection heat transfer coefficient at the outer surface of the pipe is $20 \mathrm{W} / \mathrm{m}^{2} \cdot \mathrm{K}$. (a) What is the heat loss per unit length from the bare pipe (no insulation)? Estimate the heat loss per unit length if a 50-mm-thick layer of insulation (magnesia, 85%) is added. The steel and magnesia may each be assumed to have an emissivity of 0.8, and the steam-side convection resistance may be neglected. (b) The costs associated with generating the steam and installing the insulation are known to be $\$ 4 / 10^{9} \mathrm{J}$ and $100/m of pipe length, respectively. If the steam line is to operate 7500 h/yr, how many years are needed to pay back the initial investment in insulation?

Describe how the arrangement of vascular bundles differs between monocot and dicot stems.

Name the three tissue types in plants and briefly describe them.

Recognize the differences in the location, structure, and function among various angiosperm tissues.

A technique for measuring convection heat transfer coefficients involves bonding one surface of a thin metallic foil to an insulating material and exposing the other surface to the fluid flow conditions of interest. By passing an electric current through the foil, heat is dissipated uniformly within the foil and the corresponding flux, $P_{\text {elec }}^{n}$, may be inferred from related voltage and current measurements. If the insulation thickness L and thermal conductivity k are known and the fluid, foil, and insulation temperatures $\left(T_{\infty}, T_{s}, T_{b}\right)$ are measured, the convection coefficient may be determined. Consider conditions for which $T_{\infty}=T_{b}=25^{\circ} \mathrm{C}, \quad P_{\mathrm{elec}}^{\prime \prime}=2000 \mathrm{W} / \mathrm{m}^{2}$ L=10 mm, and $k=0.040 \mathrm{W} / \mathrm{m} \cdot \mathrm{K}$.

A polynomial P is given. (a) Factor P into linear and irreducible quadratic factors with real coefficients. (b) Factor P completely into linear factors with complex coefficients.

$$P ( x ) = x ^ { 3 } - 2 x - 4$$

Fill in the blank with a constant term so that the given value of the variable will make the equation true. 4y - ____ = 100; y = 25

What is the hierarchy of structures in plants?

Determine whether the statement is true or false. Justify your answer. Data that are positively correlated are always better modeled by a linear equation than by a quadratic equation.