Exam 38: Angiosperm Reproduction and Biotechnology

Fruit ripening represents an example of positive feedback. Which one of the following statements accurately justifies why the process of fruit ripening involves positive feedback?

Which of the following statements regarding flowering plants is correct?

Over human history, which process has been most important in improving the features of plants that have long been used by humans as staple foods?

Many flowering plants coevolve with specific pollinators. The Madagascar orchid has a 12-inch floral tube and is a reliable nectar source for the hawkmoth, which has a correspondingly long proboscis (tongue). Which statement most accurately describes how coevolution might have occurred for the hawkmoth and Madagascar orchid?

Pollen from a plant with the S₁S₂ genotype is recognized and allowed to germinate on the stigma of the same plant with the S₁S₂ genotype. According to this, the plant is ________.

Which of the following flower parts develops into a seed?

Double fertilization means that ________.

A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte tissue red. If the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur?

Which of the following types of plants are incapable of self-pollination?

A fruit is

Double fertilization means that

The most immediate potential benefits of introducing genetically modified crops include ________. I.creating crops that can grow on land previously unsuitable for agriculture II.creating crops with better potential for biofuel production III.creating crops with better nutritional attributes IV.increasing crop yield V.decreasing the mutation rate of certain genes

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

Plant biotechnology is an effective tool for ________.

Which of these events occurs first in seed germination?

In which of the following pairs are the two terms equivalent?

Which of the following is a true statement about asexual reproduction in plants?

Suppose 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?

"Golden Rice" ________.

Which of the following is an effective method to produce plants exhibiting hybrid vigor?