Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Textbook Question
Chapter 38, Problem 5TYU
Why is the emergence of the radicle an important first step in germination?
a. Its hook helps protect the shoot that emerges later.
b. It carries out photosynthesis to supply the embryo with food.
c. It is important for establishing a supply of water to the growing embryo.
d. It is necessary to break the seed coat.
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How would a loss-of-function mutation in the α-amylase gene affect seed germination?
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From what structure does a pollen grain develop?
A. Egg
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D. Microspore
Which suite of reproductive features distinguishes angiosperms from gymnosperms?
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Pollen-formation, double fertilisation, seed-formation
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Pollen-formation, the carpel, double fertilisation, endosperm formation
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Chapter 38 Solutions
Biological Science (6th Edition)
Ch. 38 - 1. What happens when double fertilization...Ch. 38 - 2. CAUTION In angiosperms, are sperm and eggs...Ch. 38 - Prob. 3TYKCh. 38 - Prob. 4TYKCh. 38 - 5. Why is the emergence of the radicle an...Ch. 38 - What are the advantages and disadvantages of...Ch. 38 - Prob. 7TYUCh. 38 - Prob. 8TYUCh. 38 - Prob. 9TYPSSCh. 38 - 10. MODEL Make a sketch of a simplified flower...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How to extract fruit seeds from small seeds with adhering flesh? a. wash them thoroughly with water b. simply twist the nut to separate from the pseudocarp c. remove the flesh by macerating seeds with fine sand, then wash thoroughly with water d. soak them in water for 24 hrs until the adhering materials becomes soft and readily separated from the seeds. Wash with tap water.arrow_forwardBesides the seed, what other major structure diminishes a plant’s reliance on water for reproduction? a. flower b. fruit c. pollen d. sporearrow_forwardThe structure of the fern sporangium shown promotes spore dispersal by a ‘catapult’ mechanism. What is the driving force involved? A. Increased pressure within the sporangium B. Opening of the sporangium mouth C. Elastic rebound D. Water evaporation from the annulusarrow_forward
- Which statement describes a similarity between angiosperms and gymnosperms? A. Both produce fruit. B. Both are heterosporous. C. Both have flagellated sperm. D. Both have carpels protecting the seed.arrow_forwardWhich structure would differentiate an angiosperm from a gymnosperm? A. stamen B. ovule C. pollen D. gametophytearrow_forwardHow does double fertilization occur in flowering plants?a. The two sperm in a pollen tube fertilize the two egg cells present ineach female gametophyte.b. One of the two sperm in a pollen tube fertilizes the single egg in afemale gametophyte, and the other fuses with the two nuclei presentin the central cell.c. Two sperm, one contributed by each of two different pollen tubes,fertilize the two egg cells in a single female gametophyte.d. Two sperm contributed by separate pollen tubes enter a singlefemale gametophyte; one of the sperm fertilizes the egg cell, and theother fertilizes the central cell.e. None of the above is correct.arrow_forward
- which statement about stems is true? a. Gymnosperms have herbaceous stems. b. Woody stems produce xylem and phloem only once during the life of a plant. c. The vascular bundles are arranged in a circle in herbaceous monocot stems. d. Stems connect the vascular tissue from shoot to root.arrow_forwardWhich of these is a feature not present in seedless plants that have contributed to the success of seed plants on land? a. Seeds have four layers of protective tissue, the seed coat, that improve survival by providing more protection from environmental stresses. b. The reduced gametophytes of seed plants are nurtured by sporophytes and protected from stress, such as drought conditions and UV radiation. c. Seed germination is solely mediated by water during episodes of heavy rain. d. Pollen grains, with walls containing sporopollenin, deter herbivores. Three unknown non-vascular plant species were collected by Biology 3 students. Which characters BEST discriminate them from one another? 1. protonema II. special organelles III. seta IV. calyptra V. capsule VI. stalk a. I,II,III b. I,III,V c. III, IV, V d. II,IV,VIarrow_forwardWhat adaptation do seed plants have in addition to the seed that is not found in seedless plants?a. gametophytesb. vascular tissuec. pollend. chlorophyllarrow_forward
- Which characteristic differentiates an angiosperm from a fern? A. the alternation of generations B. the presence of cotyledons C. the presence of vascular tissue D. the alternation of sporophytesarrow_forwardWhat is a function of the flower? a.) to develop into fruits which contains seed for reproduction b.) to hold the plant firmly to the ground c.) to absorb water mineral salts from the soilarrow_forwardMake a coclusion about the Effect of Light to seed germination and seed growth.arrow_forward
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