Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 40.1, Problem 1CS
Core Skill: Connections Look back to Figure 32.14 to see a more detailed illustration of the flowering plant life cycle. How can you recognize and where can you find the gametophyte generation of a flowering plant?
Figure 32.14 The life cycle of a flowering plant, illustrated by the genus Polygonum. Flowering plant life cycles differ in length and in the number of cells and nuclei occurring in the female gametophyte, with the seven cells and eight nuclei of Polygonum being common.
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EXPERIMENT 4: INDUCTION OF CALLUS SOMATIC EMBRYOGENESIS OF HAPLOID PLANTS
Objective:
To prepare anther as a source of explant
To induce callus somatic embryogenesis of haploid plants
Procedure:
Cut off the buds and sort them into 3 developmental stages based on length of buds
Surface sterilize the buds in 70% ethanol for 2-3 minutes, making sure the entire bud is immersed in the alcohol.
Drain off excess alcohol from the buds and aseptically excise the anthers from each bud.
Remove the filaments and culture the anther on one of the agar media provided. Label the stage of development of the bud on each petri dish as the anthers are cultured. Seal the Petri dishes with parafilm.
Incubate in the dark at 26 to 28ºC for 4 to 8 weeks or until small plants can be seen growing out of the anthers. Then transfer to diffuse light.
Record the results of the experiment in table form and submit the report.
Observation:
The culture was contaminated after 8 weeks of incubation…
what are the flaws ?
Plants reproduce in a pattern known as alternation of generations. A haploid gametophyte produces gametes through mitosis. The gametes fuse to form a zygote, which then grows into a diploid sporophyte. The sporophyte produces spores through meiosis, which then grow into a gametophyte and start the process over.
Flowers are how angiosperms reproduce. A whorl of sepals (corolla) is at the base of the flower, followed by a whorl of petals (calyx). Inside the flower is a female organ known as a carpel and it is made of a stigma, style, and ovary. The male organ is the stamen and it is made of an anther and filament.
Pollen being transferred to the style is known as pollination. Once the pollen travels down the style and reaches the egg, fertilization happens when sperm meets egg. Then, the fertilized egg and surrounding tissue develops into a seed. A seed is protected by a seed coat and contains endosperm and an embryo. The endosperm grows into a new plant while…
Directions: Plants have two life stages. The gametophyte life cycle, wherein a
haploid spore is produced, and the sporophyte life cycle wherein there is union of the
gametes. Below are different events in the development of flowering plants. Arrange
them in the correct order. Place the number from 1 to 6 inside the box.
The hypocotyl pushes to the soil along with the cotyledon(s).
It starts as a seed which contain the miniature plant called embryo.
Of the two sperm cells, one sperm fertilizes the egg cell, forming a diploid
zygote; the other sperm fuses with the two polar nuclei, forming a triploid cell
that develops into the endosperm
Mature plant develops the gametes, releases the pollen and pollinates the
flower.
It is the process wherein seeds are transported, spread or moved away from
the parent plant either by wind, water, animals or insect.
The plant, given enough nutrients will develop in a mature stage.
AS RIC
Chapter 40 Solutions
Biology
Ch. 40.1 - Core Skill: Connections Look back to Figure 32.14...Ch. 40.1 - Prob. 1CCCh. 40.1 - Prob. 2CCCh. 40.2 - What inference can you draw from the observation...Ch. 40.2 - List several ways in which the flowers at the rim...Ch. 40.2 - Why do you think Liang and Mahadevan used Lilium...Ch. 40.2 - How did time-lapse video improve data gathering in...Ch. 40.3 - Prob. 1CCCh. 40.3 - Prob. 2CCCh. 40.3 - Prob. 1CS
Ch. 40.4 - Prob. 1CCCh. 40.4 - Prob. 2CCCh. 40.4 - Prob. 1CSCh. 40 - Where do the pollen grains of flowering plants...Ch. 40 - Prob. 2TYCh. 40 - Where would you find female gametophytes of a...Ch. 40 - How does double fertilization occur in flowering...Ch. 40 - Prob. 5TYCh. 40 - Prob. 6TYCh. 40 - Prob. 7TYCh. 40 - If an ovary contains eight ovules, how many seeds...Ch. 40 - Prob. 9TYCh. 40 - Prob. 10TYCh. 40 - Prob. 1CQCh. 40 - Prob. 2CQCh. 40 - Prob. 3CQCh. 40 - Prob. 1COQCh. 40 - How do plants prevent the production of many...
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