At this stage of embryogenesis, the plant embryo forms eight cells. In Arabidopsis thaliana, it is the beginning of radial patterning that is marked by the tangential divisions of the cells of the embryo proper in the embryo. A. Octant stage B. Dermatogen/Protoderm stage C. Globular stage D. Heart stage

At this stage of embryogenesis, the plant embryo forms eight cells. In Arabidopsis thaliana, it is the beginning of radial patterning that is marked by the tangential divisions of the cells of the embryo proper in the embryo. A. Octant stage B. Dermatogen/Protoderm stage C. Globular stage D. Heart stage

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter14: Diversity Of Plants

Section: Chapter Questions

Problem 1ACQ: Figure 14.19 At what stage does the diploid zygote form? a. When the female cone begins to bud from...

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Which of the following is an advantage of asexual reproduction? a. Cuttings taken from an adult plant show increased resistance to diseases. b. Grafted plants can more successfully endure drought. c. When cuttings or buds are taken from an adult plant or plant parts, the resulting plant will grow into an adult faster than a seedling. d. Asexual reproduction takes advantage of a more diverse gene pool.
Figure 14.19 At what stage does the diploid zygote form? a. When the female cone begins to bud from the tree b. When the sperm nucleus and the egg nucleus fuse c. When the seeds drop from the tree d. When the pollen tube begins to grow
Cite briefly discuss some problems related to plant embryogenesis.
How would plant development change if the functions of the genes SHOOTMERISTEMLESS (STM) and MONOPTEROUS (MP) were reversed? a. The embryo–suspensor axis would be reversed. b. The embryo–suspensor axis would be duplicated. c. The root–shoot axis would be reversed. d. The root–shoot axis would be duplicated.
The products of budding are a. two cells of equal size. b. two cells, one of which is smaller than the other. c. many cells of equal size. d. many cells of variable size.
The portion of an embryonic axis that above where the cotyledons are attached and below the first pair of miniature leaves is called?
Mention the site of zygote formation in the ovule of a flowering plant. What happens to sepals, petals and stamens after fertilisation? State the fate of zygote, ovule and ovary in these plants.
If the VIN3 gene had a loss-of-function mutation, how do youthink that would affect the phenotypes of summer-annual andwinter-annual Arabidopsis plants?a. Neither type would flower.b. Both types would flower at the proper time.c. The summer type would flower, but the winter type wouldnot.d. The winter type would flower, but the summer type wouldnot.
Flatworm parenchyma cells that are stem cells: a. pigment b. fixed parenchyma cells c. neoblasts cells d. neural crest cells e. chromatophores
Double fertilization in flowering plants occurs when one sperm cell fuses with an egg to form a diploid cell, the ______, and a second sperm fuses with the two nucleiof the central cell of the female gametophyte. This triploid cell will divide mitotically to form a food-storage tissue called the_______ . This food is transferred to the developing plant embryo by structures called_______ .
An important difference between plant development and animal development is that______ . a. only plant development depends on hormones b. plants continue to develop throughout their lifetime c. animals, but not plants, have a circulatory system
Please answer both 1(a)In mammals , an egg fertilized by one sperm divides repeatedly (1-2-4-8-16-32-64,etc). at the 64 cell stage , only three cells go on to become the embryo while 61 grow to become the fetal side of the placenta. in plants , fertilization likewise results in the development of an embryo and nourishing endosperm . However , how does this process differ from the mammal embryo and placenta. (b)Why are Seed producers the dominant plants today?