Introduction:
The development of an embryonic plant in the form of the seedling is called as the germination of a seed. During germination, root grows first and provides water and mineral from the soil to the developing shoots.
Answer to Problem 1MC
Correct answer:
When a
Option (d) is given as “a root cap protects the emerging root”.
Explanation of Solution
Justify reason for the correct statement:
Seeds germinate below the soil, so the delicate part of the embryo that is apical meristem part of an embryo is needed to be protected from the sharp particles of soil during the time of seed germination. Thus, the apical meristem part of the root is protected by the outer covering of root cap.
Hence, option (d) is correct.
Justify reasons for the incorrect statements:
Option (a) is given as “a coleoptile protects the emerging shoot”.
Coleoptile layer is only present in
Option (b) is given as “the shoot develops more rapidly than the root”.
During germination, root develops more rapidly as it provides water and mineral from the soil to the shoot. Hence, it is a wrong answer.
Option (c) is given as “the shoot absorbs nutrients directly from the endosperm”.
The cotyledon part of seed absorbs nutrient from the endosperm. Hence, it is a wrong answer.
Hence, options (a), (b), and (c) are incorrect.
The emerging tip of the root in dicot seed is protected by the root cap.
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Chapter 45 Solutions
Biology
- Which of the following statements is false?a. Auxin and gibberellin promote stem elongation.b. Cytokinin triggers growth of lateral buds.c. Abscisic acid promotes water loss and dormancy.d. Ethylene promotes fruit ripening and abscissionarrow_forwardChoose the incorrect statement: a. Fusiform and ray initials are formed by the vascular cambium. b. The cork cambium produces the periderm layer, a thicker tougher outer layer that replaces the epidermis. c. Wood is composed of secondary xylem. d. The vascular cambium separates the xylem on the outside of the stem and the phloem on the inside.arrow_forwardwhich of the following best describes the seeds of dicots? a. the seeds produce only one cotyledon with no endosperm b. the seeds contain two cotyledons with endosperm c. the seeds contain two cotyledon and very little endosperm d. an example is bean e. c and darrow_forward
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- In vascular plants, one difference between root and shoot systems is that a. root systems cannot undergo secondary growth. b. root systems undergo secondary growth, but do not form bark. c. root systems contain pronounced zones of cell elongation, whereas shoot systems do not. d. root systems can store food reserves, whereas stem structures do not.arrow_forwardHow would a loss-of-function mutation in the α-amylase gene affect seed germination? a. The seed could not imbibe water. b. The embryo would starve. c. The seed coat would not rupture. d. The seed would germinate prematurely.arrow_forwardWhich of the following causes increase in the diameter of a stem?a. Increase in size of cells in enlargement region.b. Secondary xylem produced by the vascular cambium.c. Secondary phloem produced by the vascular cambium.d. All of the above.arrow_forward
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- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning