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Ch. 38 - Angiosperm Reproduction and Biotechnology
Campbell - Campbell Biology 11th Edition
Urry11th EditionCampbell BiologyISBN: 9789357423311Not the one you use?Change textbook
All textbooksUrry 11th EditionCh. 38 - Angiosperm Reproduction and BiotechnologyProblem 6
Chapter 38, Problem 6

A small flower with green petals is most likely:
a. Bee-pollinated
b. Bird-pollinated
c. Bat-pollinated
d. Wind-pollinated

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Identify the characteristics of the flower: small size and green petals.
Consider the typical traits of flowers pollinated by different agents: bee-pollinated flowers are often brightly colored and fragrant, bird-pollinated flowers are usually tubular and brightly colored, bat-pollinated flowers are often large and open at night, and wind-pollinated flowers are typically small and not brightly colored.
Analyze the flower's characteristics in relation to these traits: the small size and green color suggest it is not adapted to attract animals like bees, birds, or bats.
Understand that wind-pollinated flowers do not rely on attracting pollinators and often have inconspicuous colors like green.
Conclude that the small flower with green petals is most likely adapted for wind pollination, as it does not exhibit traits that attract animal pollinators.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Pollination Mechanisms

Pollination mechanisms refer to the various ways in which pollen is transferred from the male part of a flower to the female part. This can occur through biotic agents like insects, birds, and bats, or abiotic agents like wind and water. Understanding these mechanisms helps in identifying the likely pollinator based on flower characteristics.
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Flower Characteristics and Pollinators

Different pollinators are attracted to specific flower traits. For instance, brightly colored and fragrant flowers often attract bees, while flowers with dull colors and no scent, like those with green petals, are typically wind-pollinated. Recognizing these traits is crucial for determining the pollination method.
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Wind Pollination

Wind pollination, or anemophily, involves the transfer of pollen through the air. Flowers adapted to wind pollination usually have small, inconspicuous petals and produce large amounts of lightweight pollen. These adaptations increase the likelihood of successful pollination without the need for animal pollinators.
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Related Practice
Textbook Question

'Bt maize'

a. Is resistant to various herbicides, making it practical to weed rice fields with those herbicides.

b. Contains transgenes that increase vitamin A content.

c. Includes bacterial genes that produce a toxin that reduces damage from insect pests.

d. Is a 'boron (B)-tolerant' transgenic variety of maize.

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Textbook Question

Which statement concerning grafting is correct?

a. Stocks and scions refer to twigs of different species.

b. Stocks and scions must come from unrelated species.

c. Stocks provide root systems for grafting.

d. Grafting creates new species.

Textbook Question

Some dioecious species have the XY genotype for male and XX for female. After double fertilization, what would be the genotypes of the embryos and endosperm nuclei?

a. Embryo XY/endosperm XXX or embryo XX/endosperm XXY

b. Embryo XX/endosperm XX or embryo XY/endosperm XY

c. Embryo XX/endosperm XXX or embryo XY/endosperm XYY

d. Embryo XX/endosperm XXX or embryo XY/endosperm XXY

Textbook Question

The black dots that cover strawberries are actually fruits formed from the separate carpels of a single flower. The fleshy and tasty portion of a strawberry derives from the receptacle of a flower with many separate carpels. Therefore, a strawberry is:

a. A simple fruit with many seeds

b. Both a multiple fruit and an accessory fruit

c. Both a simple fruit and an aggregate fruit

d. Both an aggregate fruit and an accessory fruit

Textbook Question

Draw and label the parts of a flower.

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