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Exam 21: Plant Form and Function

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Question 61

Multiple Choice

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The tendency of water molecules to "cling" together is

A) cohesion.
B) adhesion.
C) hydrolysis.
D) condensation.
E) evaporation.

F) None of the above
G) A) and D)

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Question 62

Multiple Choice

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In the spring before the leaves come out,maple trees are often tapped to collect sap to make syrup.The sugars were stored in the wood of the tree as starch and then released as temperatures rise above freezing in late winter.Which of the following best describes the original source of the sugars found in the sap?

A) photosynthesis during the previous summer
B) photosynthesis that winter
C) photosynthesis occurring in the spring while the sap is flowing
D) breakdown of cellulose in the tree
E) absorption from the soil

F) A) and B)
G) C) and D)

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Question 63

Multiple Choice

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Conducting cells in xylem are

Which of the following is not an element taken in primarily by the roots of the plant?

In the section "Investigating Life: The Hidden Cost of Traps",how does water get into the pitcher of a carnivorous plant?

Root hairs greatly increase the absorptive surface area of a root.

The pores through which leaves exchange gases with the atmosphere are

Which of the following is a gardener least likely to add in high volumes to fertilize a garden?

Commercial fertilizer labels prominently display three numbers which indicate the content of three elements needed by most plants as macronutrients.These elements in number sequence are

The primary root of a plant that enlarges and persists throughout the life of the plant is the

"K" is the chemical symbol for

Throughout a growing season,a plant uses up to 1000 liters (or kg) of water to produce just 1 kilogram of tissue.What happens to most of the remaining 999 kg of water?

The ______ and ______ of a plant's leaf help conserve water in a plant.

Scientists measured the pressure in the xylem of redwood trees at different heights and found that the higher they made their measurements,the lower the pressure.They extrapolated this to a pressure of zero,and concluded that the tallest a tree could grow is 122-130 meters.The tallest known tree on Earth is 112.7 meters.What assumption were the scientists making to conclude that when pressure was zero the plant could grow no further?

Herbaceous plants are those that contain little or no woody tissue.

Correctly match the plants with their feeding type. 1. carnivorous plants $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ autotrophic 2. parasitic plants $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ autotrophic and heterotrophic on plants 3. most plants $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ autotrophic and heterotrophic on animals

The innermost layer of the cortex of a plant root is the

The part of a plant that is the stalk-like support for a leaf is the