BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 21, Problem 13SA
Summary Introduction
Introduction:
A seed is produced after fertilization of male and female gamete in the plants. In general mature ovule is called a seed. A seed has the capability to develop in the complete plant. Only the higher plants such as gymnosperms and
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Chapter 21 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 21 - The first plants were_________. a. ferns c....Ch. 21 - Which of the following statements is false? a....Ch. 21 - In bryophytes, eggs are fertilized in a chamber on...Ch. 21 - Prob. 4SACh. 21 - Coal consists primarily of compressed remains of...Ch. 21 - Prob. 6SACh. 21 - Prob. 7SACh. 21 - Prob. 8SACh. 21 - Only angiosperms produce_______. a. pollen c....Ch. 21 - The _______do not have xylem or phloem. a. mosses...
Ch. 21 - Prob. 11SACh. 21 - Prob. 12SACh. 21 - Prob. 13SACh. 21 - Prob. 14SACh. 21 - Prob. 15SACh. 21 - Early botanists admired ferns but found their life...Ch. 21 - In animals, meiosis of germ cells produces...Ch. 21 - In most plants the largest, longest-lived body is...Ch. 21 - Consider a cherry pit, which is a seed with a...Ch. 21 - Suppose you wanted to make a science fiction film...
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- The seed coat forms from the______ . a. integuments c. endosperm b. coleoptile d. sepalsarrow_forwardFamily Clusiaceae A. Leaf type:____ B. Flower characteristics:____ C. Seed morphology:____ Family Dipterocarpaceae A. Plant habit:_____ B. Seed morphology:____arrow_forwardThe arrival of pollen grains on a receptive stigma is called_____ . a. germination c. pollination b. fertilization d. propagationarrow_forward
- all of the follwoing represents seed dispersal adaptaion except a. hooks on the fruit b. spines on the fruit c. fleshy fruit d. sticky seeds e. fluffy parachute structures on the seedsarrow_forwardPresence of all of the following factors promotes dormancy of seeds, except a.Phenolics b.Impermeable seed coat c.Immature embryo d.Gibberellinsarrow_forwardMost gymnosperm seeds _______________. Select one: a. have attached wings to aid in dispersal b. grow as groups in thick pouches inside of woody cones c. have very little viability d. possess no seed coat e. none of the above answers f. have triploid endosperm, the product of double fertilizationarrow_forward
- Abundant and powdery pollen produced by small, indistinct flowers is probably transported by: a. bees and butterflies b. flies c. birds d. windarrow_forwardThe first visible plant organ that penetrates the seed coat during germination is the O A. Epicotyl B. Cotyledon(s) О С. Нуросоtyl D. Radiclearrow_forwardMatch the terms appropriately. ___ ovule a. gamete-producing body ___ cuticle b. spore-producing body ___ gametophyte c. where eggs form ___ sporophyte d. underground stem ___ fruit e. mature ovary ___ endosperm f. nutritive tissue in seed ___ rhizome g. where fern spores form ___ sorus h. secreted waxy layerarrow_forward
- A. Pollen tube B. C. Which part of this angiosperm egg will become the endosperm? D B E A с D. E.arrow_forwardFar-red light will _________stem elongation and _______seed dormancy. Select one: a. promote, suppress b. suppress, promote c. suppress, suppress d. promote, promotearrow_forwardIn 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_forward
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