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What are the three phases of seed development? When does the peak of ABA concentration take place? What is ABA thought to do in terms of seed development, dormancy and germination?

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter27: Reproduction And Development Of Flowering Plants

Section: Chapter Questions

Problem 7SA: The three main parts of a typical mature eudicot seed are the _______ . a. pollen grain, egg, and...

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Concept explainers

Plant sensory system

The plant sensory system is a sophisticated system that responds to environmental stimuli such as light,temperature, gravity, and touch. Research predicts that plant hormones and signaling mechanisms areresponsible for this regulation system in plants.

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What are the three phases of seed
development? When does the peak of ABA
concentration take place? What is ABA
thought to do in terms of seed
development, dormancy and germination?

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The three main parts of a typical mature eudicot seed are the _______ . a. pollen grain, egg, and seed coat b. embryo, endosperm, and seed coat c. megaspores, microspores, and ovule d. embryo, cotyledons, and seed coat
What are the external factors on seedling growth? and what are their effects in seed growth and germination? (The seeds used in the experiment are monggo seeds)
How does moisture and the presence or absence of light affect seed germination?
What are the major benefits of gravitropism for a germinating seedling?
The embryo of monocotyledonous seed consists of one large, shield shaped cotyledon. What is it known as?
What is the water content of matured seed and what is the reason behind for the low water content? *
In the heart embryo stage of Arabidopsis thaliana, there are three key anatomical features that are essential for plant development. The red highlighted cells will become the the yellow highlighted cells will become the and the two "lobes" of the heart will become the suspensor; apical meristem; seed coat basal daughter cell; apical daughter cell; cotyledons shoot apical meristem; root apical meristem; taproots suspensor; shoot apical meristem; taproots root apical meristem; shoot apical meristem; cotyledons
What is the hilum of the seed? A micropyle? What purposes do they serve?
What are three functions of the shoot apical meristem?
What is Pollen-pistil Interaction?
What is the hilum of the seed? A micropyle? What purposes do they serve? Explain in 3 paragraphs.
In a common eudicot pattern of development for the common bean in the figure, the radicle emerges from the seed (1), then begins to develop into a primary root that grows down into the soil. As this occurs, the hypocotyl emerges from the seed and bends into the shape of a hook (2). The bent hypocotyl lengthens and pulls the cotyledons upward (3). When the hypocotyl reaches the soil surface, exposure to light causes it to straighten (4). Primary leaves emerge from between the cotyledons and begin photosynthesis. The cotyledons typically undergo a period of photosynthesis before shriveling (5). Eventually, the cotyledons fall off the lengthening stem, and the young plant’s new leaves produce all of its food. a) Identify and explain what environmental factors influence the timing and coordination of the germination of seeds.