Campbells Biology 12th edition chapter 38 test bank

Campbells Biology 12th edition chapter 38 test bank Which of the following is the strongest environmental argument against the introduction of genetically modified crops? A Lateral transfer of genes between species does not occur naturally. B Transgenic crops can no longer reproduce sexually and would go extinct in nature. C The pollen of genetically modified flowers would be sterile. D Transgenic crops hybridize with related native species, allowing modified traits to spread in the wild. - ANSWER-D Transgenic crops hybridize with related native species, allowing modified traits to spread in the wild. Which of the following types of flowers are incapable of self-pollination? A flowers lacking petals B flowers lacking anthers C wind-pollinated flowers D insect-pollinated flowers - ANSWER-B flowers lacking anthers Which of the following is the correct order of floral organs from the outside to the inside of a complete flower? A) petals → sepals → stamens → carpels B)sepals → stamens → petals → carpels C)spores → gametes → zygote → embryo D)sepals → petals → stamens → carpels - ANSWER-sepals → petals → stamens → carpels Arrange the following structures from largest to smallest, assuming that they belong to two generations of the same angiosperm. 1. ovary 2. ovule 3. egg 4. carpel 5. embryo sac A)4, 2, 1, 5, 3 B)5, 4, 3, 1, 2 C)5, 1, 4, 2, 3 D)4, 1, 2, 5, 3 - ANSWER-4, 1, 2, 5, 3 Which of the following best describes a selective advantage of retaining the gametophyte within the living sporophyte of land plants? A The gametophyte is able to grow much larger than if it was independent. B The gametophyte can be raised into the air, exposing it to more light for photosynthesis. C Meiosis can now occur in haploid gametophyte cells. D Nutrients needed for the gametophyte to produce gametes can be provided by the parent plant. - ANSWER-D Nutrients needed for the gametophyte to produce gametes can be provided by the parent plant. A summer occupation in maize-growing regions is detasseling the maize: removing unwanted male flowers so that female flowers on the same plant are pollinated by the desired pollen for the hybrid maize. Which of the following best describes maize plant flowers? A)They have both stamens and carpels and the plant is dioecious. B)They have both stamens and carpels and the plant is monoecious. C)They have either stamens or carpels and the plant is dioecious. D)They have either stamens or carpels and the plant is monoecious - ANSWER-D)They have either stamens or carpels and the plant is monoecious Which of the following occurs during the alternation of generations in plants? A meiosis produces gametes B mitosis produces gametes C fertilization produces spores D fertilization produces gametes - ANSWER-B mitosis produces gametes Which of the following structures is unique to flowering plants? A xylem B seeds C fruits D embryos - ANSWER-C fruits Which of the following best describes how sperm cells are formed in plants? A meiosis occurs in pollen grains B meiosis occurs in anthers C mitosis occurs in male gametophyte D mitosis occurs in the micropyle - ANSWERC mitosis occurs in male gametophyt