BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 30, Problem 1U
The lack of seeds is a characteristic of all
a. lycophytes.
b. conifers.
c. trachcophytcs.
d. gnctophytcs.
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Chapter 30 Solutions
BIOLOGY
Ch. 30.1 - List the evolutionary advantages of seeds.Ch. 30.1 - Distinguish between pollen and sperm in seed...Ch. 30.2 - Prob. 1LOCh. 30.2 - Prob. 2LOCh. 30.3 - Prob. 1LOCh. 30.3 - Prob. 2LOCh. 30.3 - Prob. 3LOCh. 30.4 - Describe four ways in which seeds help to ensure...Ch. 30.4 - List environmental conditions that can lead to...Ch. 30.5 - Prob. 1LO
Ch. 30.5 - Prob. 2LOCh. 30 - Using the graph in figure 30.13, calculate the...Ch. 30 - Prob. 1IQCh. 30 - Prob. 2IQCh. 30 - Prob. 3IQCh. 30 - Prob. 4IQCh. 30 - The lack of seeds is a characteristic of all a....Ch. 30 - Prob. 2UCh. 30 - Which of the following gymnosperms possesses a...Ch. 30 - In a pine tree, the microspores and megaspores are...Ch. 30 - Which of the following terms is NOT associated...Ch. 30 - Which of the following potentially represents the...Ch. 30 - Prob. 7UCh. 30 - Prob. 8UCh. 30 - The pericarp is the a. ovary wall. b. developing...Ch. 30 - Reproduction in angiospenns can occur more quickly...Ch. 30 - In double fertilization, one sperm produces a...Ch. 30 - Apply your understanding of angiosperms to...Ch. 30 - Comparing stems of two plant specimens under the...Ch. 30 - Prob. 5ACh. 30 - Fruits are complex organs that are specialized for...Ch. 30 - You haw been hired as a research assistant to...Ch. 30 - Prob. 2SCh. 30 - The relationship between flowering plants and...Ch. 30 - Prob. 4S
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- Which of the following would not be found in a moss?a. sporophytesb. stomatac. cotyledonsd. gametophytesarrow_forwardFerns differ from mosses in having: O a. There is no separate gametophyte and sporophyte (each plant changes from sexual to asexual). O b. The gametophyte is dioecious (single sex). Oc. The sperm are transported by wind. O d. Afunction of the roots is to absorb water from the soil. O e. Dispersal is no longer by spores.arrow_forwardThe seed plants are also known asa. bryophytes. b. spermatophytes.c. pteridophytes. d. lycophytes. e. none of the above.arrow_forward
- What is the position of the sporangia (describe specific position/orientation of sporangia on the stem or leaf blade) of the following plant groups: a. Bryophytes b. Rhyniophytes c. Lycophytes d. Monilophytesarrow_forwardMicrophylls a. have a single strand of vascular tissue. b. evolved before megaphylls. c. evolved as extensions of the stem. d. are found in lycophytes. e. All of these are correct.arrow_forwardSelect the taxonomic groups of land plants that produce pollen and seeds (select all the groups that apply). A. mosses b. Angiosperms c. Ferns d. Gymnosperms e. Liverwortsarrow_forward
- Plants developing in dry conditions are: A. xerophytes B. mesophytes C. lithophytes D. hydrophytesarrow_forwardWhich group of plants bears stomata only in the sporophyte generation? a. Chrysophyta b. Anthocerophyta c. Bryophyta d. Marchantiophyta Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants? a. Pollen b. Dependent gametophytes c. Ovules d. Alternation of generations Which of these statements is an incorrect comparison of a pine cone and a flower in terms of structure and function? a. Pine cones and flowers both have gametophytes and modified leaves that produce spores. b. All of the statements are correct. c. Unlike pine cones, many flowers produce both pollen and ovules. d. Pine trees have separate pollen cons and ovulate cones while in flowers, pollen grains are produced by the anthers of stamens, and ovules are within the ovaries of carpels.arrow_forward1. From what feature did the following plants got their nicknames?a. Scouring rush for Equisetum b. Whisk fern for Psilotum c. Tongue fern for Ophioglossum 2. Define the following terms: a. Synangia d. Eusporangiab. Sporophyll e. ElatersC. Strobilusarrow_forward
- Choose the best below : Ferns havea. a dominant gametophyte generation.b. vascular tissue.c. seeds.d. Both a and b are correct.e. Choices a, b, and c are correct.arrow_forwardIn mosses, the leaves are very primitive because: O a. The leaves do not carry out photosynthesis. O b. The leaves arise directly from the roots without any stem. O c. The leaves are tubular, rather than flat. O d. All the cells are identical to each other. The leaves are only found in the sporophyte. Oe.arrow_forwardWhich of the following genera most likely directly gave rise to the land plants? a. Volvox b. Chlamydomonas c. Ulva d. Charaarrow_forward
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