EBK LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 8220103935432
Author: Sadava
Publisher: MAC HIGHER
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Chapter 37.1, Problem 3R
Summary Introduction
To review:
The formation of seedless grapes by and the role of flower in the phenomena of parthenocarpy.
Introduction:
The formation of seedless fruit varieties can be by parthenocarpy or by terminating the maturation of ovule to seeds. The seedless varieties can also be formed when the gametes formed are nonfunctional. The phenomena of parthenocarpy involve the production of seedless fruit varieties.
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This figure summarises the life cycle of a seed plant. The blue circles named A and B represent the sexually mature individual of each phase of the life cycle.
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Corn develops from a seedling with a single cotyledon, displays parallel veins on its leaves, and produces monosulcate (single groove) pollen. Given this information, which term best characterizes corn?
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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
- Smooth seed shape is dominant to wrinkled. The F2 generation is as follows: 3/4 smooth: 1/4 wrinkled. What is the expected F1 genotypic ratio?arrow_forwardThe embryo of monocotyledonous seed consists of one large, shield shaped cotyledon. What is it known as?arrow_forwardA. What is double fertilization? B. What are the products of double fertilization? C. Explain the following quote “As an individual, the endosperm is unique as it has three ancestors and never leaves any descendants.” What are the three ancestors referred to in this quote? And why endosperm does not leave any descendants?arrow_forward
- What are the variations in floral structure in this cross floral diagram? Note that in epigynous flowers, the ovary is represented by a heavier line than in hypogynous and perigynous flowers.arrow_forwardIdentify the origin of each of the three parts of a seed.arrow_forwardDescribe the structure of a seed. Include the following: Seed coat, endosperm and embryo.arrow_forward
- Describe three mechanisms whereby seed dormancy is broken in different types of seeds. How are these mechanisms related to the typical environment of the plant?arrow_forwardSuppose that 100 pollen grains land on a stigma, and 50 mature seeds are formed in the fruit. What does this indicate about the pollination process and success? A) 100% success: 100 pollen grains grew to 50 ovules, two to each, and double fertilization occurred. B) 100% success: Only 50% of the pollen grains germinated, but each produced 2 sperms to complete double fertilization in 50 seeds. C) 50% success: 50 sperm fertilized 50 eggs, and 50 sperm fused with 50 polar nuclei. D) 50% success: 50 sperm fertilized 50 eggs, and 50 sperm fused with 100 polar nuclei. correct answer and explanation why please.arrow_forwardDescribe a conifer pollen cone. Why is it a simple cone? Describe a conifer seed cone. Why is it a compound cone?arrow_forward
- in a kernel, is it possible to separate the seed from the fruit?arrow_forwardIn Sunflower, If the flower is gamopetalous, are the stamens epipetalous? If so, are the stamens inserted on the tube or on the throat of the corolla? Are the stamens connivant or not? If there are as many stamens as petals, are the stamens opposite or alternate with the petals or lobes of the corolla? Split the corolla from top to bottom to determine this.arrow_forwardIn ordinary English, we use the word fruit to mean something sweet and juicy; however, the following things are fruits: peanut shells, pea pods, bell peppers,and chili peppers. What is the characteristic that lets us know these really are fruits even though they are not sweet? In contrast, bananas are fruits that do not have this characteristic (they are sterile and new plants must be grown from buds that sprout near the base of the plant).arrow_forward
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