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?

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?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter32: Plant Reproduction

Section: Chapter Questions

Problem 19CTQ: Discuss the differences between a complete flower and an incomplete flower.

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Double fertilization is a) fertilization of an egg by two sperm. b) fertilization of two eggs by the same sperm. C) fertilization of two eggs in the same flower. d) fertilization of an egg by one sperm and an endosperm-forming cell by another sperm. e) fertilization of an egg and an endosperm-forming cell by the same sperm.
In sunflower, If there are as many stamens as petals, are the stamens opposite or alternate with the petals or lobes of the corolla?
Answer the following questions: What is meant by “double fertilization”? What features of seeds and fruits have enabled angiosperms to become so widespread? What are the similarities and differences between cones and flowers?
The zygote divides only after the division of the primary endosperm cell. Give reasons in support of the statement.
Refer to the figure. a. What gene mutation(s) will result in the loss of production of the sepals? b. What gene mutation(s) will result in the loss of production of the petals? c. What gene mutation(s) will result in the loss of production of the stamens? d. What gene mutation(s) will result in the loss of production of the carpels?
B. Which region of the embryo elongates during epigeal germination to bring the shoot above ground? C. Which regions of the embryo stay below ground following epigeal germination?
What is a feasible explanation why there is lesser percentage of germination and growth rate in monggo seeds when sprinkled with water added with 3/4 teaspoon as compared to monggo seed set-ups sprinkled with water?
Some dioecious species have the XY genotype for male andXX for female. After double fertilization, what would be thegenotypes of the embryos and endosperm nuclei?(A) embryo XY/endosperm XXX or embryo XX/endosperm XXY(B) embryo XX/endosperm XX or embryo XY/endosperm XY(C) embryo XX/endosperm XXX or embryo XY/endosperm XYY(D) embryo XX/endosperm XXX or embryo XY/endosperm XXY
Berry: Tomato or Grape Examine fresh tomato fruits or other berry, noting the stalk or pedicel and the green sepals at the basal end. Where do you find the remains the style? Does the berry develop from a superior or an inferior ovary? Where were the petals and stamens attached? Is any other floral part united with the ovary in the formation of this fruit? Is the tomato an accessory fruit? Why or why not? Examine a cross-section of a tomato. How many locules (chambers) are visible? How many ovaries formed the fruit?
what is the type of endosperm in apple, orange, and mango?
from the fruit of wild daisy, there are hair like structures, what do these structures represent in the flower from which the fruit was derived?
a. Does the pod of string bean appear to be a single carpel with one cavity containing seeds?b. Is the micropyle near the attachment of the seed to the pod of string bean?