SI Chapter 37 - Chapter 37 1) Which of the following...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 37 1) Which of the following describes the fate of most of the water taken up by a plant? A) It is used as a solvent. B) It is used as a hydrogen source in photosynthesis. C) It is lost during transpiration. D) It makes cell elongation possible. E) It is used to keep cells turgid. 2) Most of the dry weight of a plant is the result of uptake of A) water and minerals through root hairs. B) water and minerals through mycorrhizae. C) CO 2 through stomata in leaves. D) CO 2 and O 2 through stomata in leaves. E) both A and B 3) Organic molecules make up what percentage of the dry weight of a plant? A) 6% B) 17% C) 67% D) 81% E) 96% 4) In hydroponic culture, what is the purpose of bubbling air into the solute? A) to keep dissolved nutrients evenly distributed B) to provide oxygen to root cells C) to inhibit the growth of aerobic algae D) to inhibit the growth of anaerobic bacteria E) both C and D 5) Which two elements make up more than 90% of the dry weight of plants? A) carbon and nitrogen B) oxygen and hydrogen C) nitrogen and oxygen D) oxygen and carbon E) carbon and potassium 6) The bulk of a plant's dry weight is derived from A) soil minerals. B) CO 2 . C) the hydrogen from H 2 O. D) the oxygen from H 2 O. E) the uptake of organic nutrients from the soil. 7) A growing plant exhibits chlorosis of the leaves of the entire plant. The chlorosis is probably due to a deficiency of which of the following macronutrients? A) carbon B) oxygen C) nitrogen D) calcium E) hydrogen ` 8) Which of the following elements is incorrectly paired with its function in a plant? A) nitrogen—component of nucleic acids, proteins, hormones, coenzymes B) magnesium—component of chlorophyll; activates many enzymes
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
C) phosphorus—component of nucleic acids, phospholipids, ATP, several coenzymes D) potassium—cofactor functional in protein synthesis; osmosis; operation of stomata E) sulfur—component of DNA; activates some enzymes 9) In the nutrition of a plant, which element is classified as a macronutrient? A) zinc
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/30/2010 for the course BSC BSC2011 taught by Professor Evans during the Spring '10 term at École Normale Supérieure.

Page1 / 5

SI Chapter 37 - Chapter 37 1) Which of the following...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online