CAMPBELL BIOLOGY:CONCEPTS..W/JUNGLE>IC
15th Edition
ISBN: 9781269930741
Author: Reece
Publisher: PEARSON C
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Textbook Question
Chapter 31, Problem 2TYK
In
a. Each one fertilizes a separate egg cell.
b. One fertilizes an egg, and the other is kept in reserve.
c. Both fertilize a single egg cell.
d. One fertilizes an egg, and the other fertilizes a cell that develops into stored food.
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Students have asked these similar questions
Which statement describes a similarity between angiosperms and gymnosperms?
A.
Both produce fruit.
B.
Both are heterosporous.
C.
Both have flagellated sperm.
D.
Both have carpels protecting the seed.
Gymnosperm
A) How are the seeds of pine trees dispersed away from the parent plant?
b) Suggest an advantage of dispersing seeds away from parent plants.
Which structure would differentiate an angiosperm from a gymnosperm?
A.
stamen
B.
ovule
C.
pollen
D.
gametophyte
Chapter 31 Solutions
CAMPBELL BIOLOGY:CONCEPTS..W/JUNGLE>IC
Ch. 31 - Prob. 1CCCh. 31 - In angiosperms, each pollen grain produces two...Ch. 31 - Prob. 3TYKCh. 31 - Prob. 4TYKCh. 31 - Prob. 5TYKCh. 31 - Produces sperm a. pollen gain b. ovule c. anther...Ch. 31 - Prob. 7TYKCh. 31 - Houses ovulesa a. pollen grain b. ovule c. anther...Ch. 31 - Prob. 9TYKCh. 31 - Prob. 10TYK
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- Which characteristic differentiates an angiosperm from a fern? A. the alternation of generations B. the presence of cotyledons C. the presence of vascular tissue D. the alternation of sporophytesarrow_forwardWhat is a function of the flower? a.) to develop into fruits which contains seed for reproduction b.) to hold the plant firmly to the ground c.) to absorb water mineral salts from the soilarrow_forwardWhich of the following is false? A. Oak trees have flowers B. Gymnosperms make pollen C. Ferns have seeds D. Corn plants have rubiscoarrow_forward
- In your own words - grasses are flowering plants but many do not have colorful flowers. What mechanism do they use to spread their pollenarrow_forwardGymnosperms are the plants with naked seeds and without flowers. Discuss how.arrow_forwardHow does double fertilization occur in flowering plants?a. The two sperm in a pollen tube fertilize the two egg cells present ineach female gametophyte.b. One of the two sperm in a pollen tube fertilizes the single egg in afemale gametophyte, and the other fuses with the two nuclei presentin the central cell.c. Two sperm, one contributed by each of two different pollen tubes,fertilize the two egg cells in a single female gametophyte.d. Two sperm contributed by separate pollen tubes enter a singlefemale gametophyte; one of the sperm fertilizes the egg cell, and theother fertilizes the central cell.e. None of the above is correct.arrow_forward
- From what structure does a pollen grain develop? A. Egg B. Embryo C. Endosperm D. Microsporearrow_forwardWhich reproductive structures would be found in a seedless, nonvascular plant? A. ovules B. archegonia C. cones D. megasporangiaarrow_forwardSuppose that 100 pollen grains land on a stigma, and 50 mature seeds are formed in the fruit. What does this indicate about the pollination process and success? A) 100% success: 100 pollen grains grew to 50 ovules, two to each, and double fertilization occurred. B) 100% success: Only 50% of the pollen grains germinated, but each produced 2 sperms to complete double fertilization in 50 seeds. C) 50% success: 50 sperm fertilized 50 eggs, and 50 sperm fused with 50 polar nuclei. D) 50% success: 50 sperm fertilized 50 eggs, and 50 sperm fused with 100 polar nuclei. correct answer and explanation why please.arrow_forward
- Angiosperm are divided into two classes which two class are belonged in their?arrow_forwardWhat initial observation led the researchers to form a hypothesis? A.) Seeds warmed by sunlight had higher germination rates. B.) Pea plants are more efficient at photosynthesis. C.) Moist paper towels increased germination rates. D.) The germination rate was higher when seeds were directly exposed to sunlight.arrow_forwardOn what are plant embryos dependent? Select one: a. Water for pollination b. Nutrients provided by the sporophyte c. Water for fertilization d. Nutrients provided by the gametophytearrow_forward
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