BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 30, Problem 9U
The pericarp is the
a. ovary wall.
b. developing seed coat.
c. ovary.
d. mature endosperm.
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After double fertilization, a zygote and ________ form. a. an ovule b. endosperm c. a cotyledon d. a suspensor
Callase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by:
(a) pollens
(b) tapetum
(c) middle layers
(d) endothecium.
A fruit is(A) a mature ovary.(B) a mature ovule.(C) a seed plus its integuments.(D) an enlarged embryo sac.
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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- The integuments of an ovule will develop into the a. embryo. b. endosperm. c. fruit. d. seed coat.arrow_forwardThe pollen lands on which part of the flower? a. stigma b. style c. ovule d. integumentarrow_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______ are parts of a mature seed. a. stamen, anther, and pollen grain b. embryo, food reserves, and seed coat c. stigma, style, and ovary d. male and female gametophytesarrow_forwardWhich of the following is false? A. Oak trees have flowers B. Gymnosperms make pollen C. Ferns have seeds D. Corn plants have rubiscoarrow_forwardEndosperm is completely consumed by the developing embryo in: (a) pea and groundnut (b) maize and castor (c) castor and groundnut (d) maize and pea.arrow_forward
- Which of the following is true regarding germination? a. Imbibition of water is the first step of germination b. All are true regarding germination c. Shoots emerge first, then roots d. The seed coat stays intact during germination e. Freezing and thawing can help start germinationarrow_forwardWhich 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_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
- After fertilization, the _______________ develop(s) into a fruit and the _______________ develop(s) into a seed. (a) ovary; ovule (b) polar nuclei; ovule (c) ovary; endosperm (d) ovule; ovary (e) ovule; polar nucleiarrow_forwardHow would plant development change if the functions of the genes SHOOTMERISTEMLESS (STM) and MONOPTEROUS (MP) were reversed? a. The embryo–suspensor axis would be reversed. b. The embryo–suspensor axis would be duplicated. c. The root–shoot axis would be reversed. d. The root–shoot axis would be duplicated.arrow_forwardWhich of the following is false about the phytochrome protein?a. There are two convertible forms.b. It primarly absorbes blue wavelengths of light.c. It is involved in seed germination.d. It is involved in plant sensing of spacing.arrow_forward
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