BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 22, Problem 2MCQ
Summary Introduction
Introduction:
Fertilization in plants occurs when the pollen tube carrying the two sperm nuclei fuses with the egg and the central cell’s two nuclei. It means that one sperm nucleus fuses with the haploid egg nucleus and forms a diploid zygote, which then develops into the embryo. The second sperm nucleus fuses with the haploid nuclei in the central cell and forms the endosperm.
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The_____ 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. sepal
Choose the statement that is true.a. All flowers are pollinated by bees.b. Apple trees are propagated by grafting because they are triploid.c. Carpels function to attract pollinators.d. A coleoptile protects the plumule of eudicot seedlings.e. The arrival of pollen on a receptive seed is called pollination.f. In plants, sperm cells are male gametes.g. Nutrients in fruits nourish new seedlings.
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Chapter 22 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 22.1 - What adaptations contribute to the reproductive...Ch. 22.1 - Prob. 2MCCh. 22.1 - Prob. 3MCCh. 22.2 - Label as many flower parts as possible in the...Ch. 22.2 - How does pollen move from one flower to another,...Ch. 22.2 - Prob. 3MCCh. 22.2 - Prob. 4MCCh. 22.2 - Prob. 5MCCh. 22.2 - Prob. 6MCCh. 22.2 - Prob. 7MC
Ch. 22.3 - Prob. 1MCCh. 22.3 - Prob. 2MCCh. 22.3 - Prob. 3MCCh. 22.4 - Prob. 1MCCh. 22.4 - Prob. 2MCCh. 22.4 - List the major classes of plant hormones, and name...Ch. 22.4 - Prob. 4MCCh. 22.5 - Prob. 1MCCh. 22.5 - How does light help regulate flowering time?Ch. 22.6 - Prob. 1MCCh. 22.6 - Prob. 2MCCh. 22 - The new gene combinations associated with sexual...Ch. 22 - Prob. 2MCQCh. 22 - Where would you find a male gametophyte? a. Inside...Ch. 22 - Prob. 4MCQCh. 22 - Prob. 5MCQCh. 22 - Prob. 6MCQCh. 22 - Prob. 7MCQCh. 22 - 8. What type of tropism is adaptive to a...Ch. 22 - Prob. 1WIOCh. 22 - Prob. 2WIOCh. 22 - Prob. 3WIOCh. 22 - Prob. 4WIOCh. 22 - Prob. 5WIOCh. 22 - Prob. 6WIOCh. 22 - Prob. 7WIOCh. 22 - Prob. 8WIOCh. 22 - Prob. 9WIOCh. 22 - Prob. 10WIOCh. 22 - Prob. 11WIOCh. 22 - What is the function of photoreceptors?Ch. 22 - Prob. 13WIOCh. 22 - Prob. 14WIOCh. 22 - Prob. 15WIOCh. 22 - Prob. 16WIOCh. 22 - Prob. 1SLCh. 22 - Prob. 1PITCh. 22 - Prob. 2PITCh. 22 - Prob. 3PITCh. 22 - Prob. 4PIT
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- A seed protects thea. embryo. b. ovule. c. ovary.d. pollen grain.arrow_forwardIn a plant’s male reproductive organs, development of pollen takes place in a structure known as the ________. a. stamen b. microsporangium c. anther d. tapetumarrow_forwardWhich of the following statements regarding plants is false?a. Meiosis within anthers produces spores that develop intopollen.b. Meiosis within ovules produces spores that develop into anembryo sac.c. The male gametophyte is a pollen grain, and the femalegametophyte is an embryo sac.d. Meiosis directly produces sperm and egg cells in plantsarrow_forward
- Altemate response C. If statement A is correct and B is wrong. D. If statement A is wrong and B is correct. A. f both statements are correct. B. H both statements are wrong. numorous microsporocytes which will undearrow_forwardAt 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 O C. Globular stage D. Heart stagearrow_forwardFruits do not form in gymnosperms becausea. in gymnosperms, the seed is surrounded by the ovule.b. in angiosperms, the ovary is surrounded by the ovule.c. in gymnosperms, the ovule is surrounded by the ovary.d. in angiosperms, the ovule is surrounded by the ovary.arrow_forward
- The arrival of pollen grains on a receptive stigma is called_____ . a. germination c. pollination b. fertilization d. propagationarrow_forwardDouble fertilization results in __________________________. a. a diploid zygote and triploid endosperm in each seed b. a spare sperm nucleus c. two diploid zygotes in every seed d. none of these answers is correct e. three diploid zygotes; one of the three will form will develop into a sporophyte embryo in a seed, one will die and the third will migrate out of the megasporangium and form a separate male plantarrow_forwardI. The joining of male and female reproductive cells is called?? II. It is the make reproductive part of the flower III. If stigma recieves pollen from another flower of the same species what the flower is ???arrow_forward
- In flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microsporesarrow_forwardFigure 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 growarrow_forwardWhich 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.arrow_forward
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