Chapter 38: Q38-8TYU. (page 839)
Draw and label the parts of a flower.
Short Answer
The parts of flowers are diagrammatically represented as below:
Chapter 38: Q38-8TYU. (page 839)
Draw and label the parts of a flower.
The parts of flowers are diagrammatically represented as below:
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Get started for freeIf flowers had shorter styles, pollen tubes would more easily reach the embryo sac. Suggest an explanation for why very long styles have evolved in most flowering plants.
Double fertilization means that
(A) flowers must be pollinated twice to yield fruits and seeds.
(B) every egg must receive two sperm to produce an embryo.
(C) one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei.
(D) every sperm has two nuclei
In a short essay (100–150 words), discuss how a flower's ability to reproduce with other flowers of the same species is an emergent property arising from floral parts and their organization.
Humans have engaged in genetic manipulation for millennia, producing plant and animal varieties through selective breeding and hybridization that significantly modify genomes of organisms. Why do you think modern genetic engineering, which often entails introducing or modifying only one or a few genes, has met with so much opposition? Should some forms of genetic engineering be of greater concern than others? Explain.
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 multiple fruits and accessory fruit.
(C) both a simple fruit and an aggregate fruit.
(D) both an aggregate fruit and an accessory fruit.
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