Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 26, Problem 17RQ
Abundant and powdery pollen produced by small, indistinct flowers is probably transported by:
- bees and butterflies
- flies
- birds
- wind
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Abundant and powdery pollen produced by small, indistinct flowers is probably transported by: a. bees and butterflies b. flies c. birds d. wind
What is Pollination ?
germination of pollen grains
growth of pollen tube in ovule
transfer of pollen from anther to stigma
visiting flowers by insects
If a pollen grain lands on the stigma of a plant of a different species:
-the pollen grain would be unable to form a generative cell.
-the pollen grain would be ejected from the stigma.
-the pollen grain would be too large or too small to enter the stigma.
-the pollen grain may not be able to germinate.
-the pollen would likely not attach to the stigma.
Chapter 26 Solutions
Biology 2e
Ch. 26 - Figure 26.8 At what stage dees the diploid zygote...Ch. 26 - Figure 26.15 If a flower lacked a megasporangium,...Ch. 26 - Seed plants are. all homosporous mostly...Ch. 26 - Besides the seed, what ether major structure...Ch. 26 - In which of the following geological periods would...Ch. 26 - Which of the following structures widens the...Ch. 26 - Which of the following traits characterizes gym...Ch. 26 - Megasporocytes will eventually produce which of...Ch. 26 - What is the ploidy of the following structures...Ch. 26 - In the northern forests of Siberia, a tall tree is...
Ch. 26 - Which of the following structures in a flower is...Ch. 26 - Pollen grains develop in which structure? the...Ch. 26 - In the course of double fertilization, one sperm...Ch. 26 - Corn develops from a seedling with a single...Ch. 26 - Which of the following plant structures is not a...Ch. 26 - White and sweet-smelling flowers with abundant...Ch. 26 - Abundant and powdery pollen produced by small,...Ch. 26 - Plants are a source of food fuel medicine all of...Ch. 26 - The Triassic Period was marked by the increase in...Ch. 26 - What role did the adaptations of seed and pollen...Ch. 26 - The Mediterranean landscape along the sea shore is...Ch. 26 - What are the four modern-day phyla of gymnosperms?Ch. 26 - Some cycads are considered endangered species and...Ch. 26 - What are the two structures that allow angiosperms...Ch. 26 - Biosynthesis of nectar and nutrient-rich pollen is...Ch. 26 - What is biodiversity and why is it important to an...
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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 coatarrow_forwardIn an angiosperm life cycle, sexual reproduction includes: meiosis within the male gametophyte to produce sperm. meiosis within the female gametophyte to produce eggs. meiosis within the ovary to produce megaspores. fertilization leading to development of microspores. fertilization leading to development of megaspores.arrow_forwardOnly angiosperms produce_______. a. pollen c. fruits b. seeds d. all of the abovearrow_forward
- Which of the following statements is false? a. Auxin and gibberellin promote stem elongation b. Cytokinin promotes cell division in shoot tips c. Abscisic acid promotes water loss and dormancy d. Ethylene promotes fruit ripening and abscission.arrow_forwardSeeds are mature _______ ; fruits are mature_______ . a. ovaries; ovules c. ovules; ovaries b. ovules; stamens d. stamens; ovariesarrow_forwardWhich of the following is NOT part of the male reproductive parts of a flower? Anthers Sperm cells Microspores Ovule Pollenarrow_forward
- In the lifecycle of an angiosperm, male pollen is produced in the ______ and is transferred to the ______on a carpel through the process of pollination (fill in the blanks) Group of answer choices Anther, Stigma Stamen, Petal Anther, Sepal Stamen, Receptacle Anther, Receptaclearrow_forwardCallase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by: (a) pollens (b) tapetum (c) middle layers (d) endothecium.arrow_forwardIn seed-bearing plants, the _______________ develops into the seed following fertilization The microsporangium. The sporophyte. The endosperm. The ovule. The pollen grain.arrow_forward
- Which of the following is True?a. Ethylene stimulates abscission layers to form.b. Abscisic acid causes abscission layers to form.c. Ethylene is sometimes sprayed on flowers to keep them fresh.d. Abscisic acid stimulates seed germination.arrow_forwardThe_____ of a flower contains one or more ovaries in which eggs develop, fertilization occurs, and seeds mature. a. pollen sac c. receptacle b. carpel d. sepalarrow_forwardLabel the parts of the flower in the following illustration.arrow_forward
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