Exam 38: Angiosperm Reproduction and Biotechnology

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

The pollen tube (see the above figure)grows in the ________ and is directed towards the micropyle by chemical attractants of the ________.

A seed develops from

Which of the following characteristics would you associate with asexual reproduction?

What adaptations should one expect of the seed coats of angiosperm species whose seeds are dispersed by frugivorous (fruit-eating)animals,as opposed to angiosperm species whose seeds are dispersed by other means? 1)The exterior of the seed coat should have barbs or hooks. 2)The seed coat should contain secondary compounds that irritate the lining of the animal's mouth. 3)The seed coat should be able to withstand low pHs. 4)The seed coat,upon its complete digestion,should provide vitamins or nutrients to animals. 5)The seed coat should be resistant to the animals' digestive enzymes.

Which of the following is a scientific concern related to creating genetically modified crops?

Angiosperms are the most successful terrestrial plants.Which of the following features is unique to them and helps account for their success?

One disadvantage of monoculture is that

Which of the following plant/animal interactions is not a mutually beneficial (mutualistic)relationship?

A perfect flower is fertile,but may be either complete or incomplete.Which of the following correctly describes a perfect flower?

A parent with an S₁S₂ genotype exhibiting gametophytic self-incompatibility could potentially fertilize which of the following plant genotypes of the same species with pollen grains?

Microsporangia in flowering plants are located in the

Three mitotic divisions within the female gametophyte of the megaspore produce

In flowering plants,pollen is released from the

All of the following strategies are being pursued with the goal of preventing transgene escape from genetically modified crops except

Which of the following metabolic processes is most likely to still be occurring at low levels in a fully mature,viable,dry seed?

Which of the following statements is true for a species that produces seeds by apomixis?

Genetic incompatibility does not affect the

The following questions refer to the diagram of an embryo sac of an angiosperm shown below. -The ________ produces the pollen tube in the above figure.

Which of the following are true of most angiosperms?