Exam 38: Angiosperm Reproduction and Biotechnology

Double fertilisation means that

Double fertilisation means that ________.

A small flower with green petals is most likely

Among plants known as legumes (beans, peas, alfalfa, clover, for example), the seeds are contained in a fruit that is itself called a legume, better known as a pod. Upon opening such pods, it is commonly observed that some ovules have become mature seeds, whereas other ovules have not. Thus, which of the following statements is (are) true? 1) The flowers that gave rise to such pods were not pollinated. 2) Pollen tubes did not enter all of the ovules in such pods. 3) There was apparently not enough endosperm to distribute to all of the ovules in such pods. 4) The ovules that failed to develop into seeds were derived from sterile floral parts. 5) Fruit can develop, even if all ovules within have not been fertilised.

While looking at a flower in your garden, you notice that it has carpels with very long styles, and stamens with very short filaments. This plant is most likely to reproduce by ________.

Which of the following is correctly paired with its life cycle generation?

In a multicellular organism, any cell that can divide and generate a/an ________ of the original organism is called to be totipotent.

Regardless of where in the world a vineyard is located, for the winery to produce a Burgundy, it must use varietal grapes that originated in Burgundy, France. The most effective way for a new Hunter Valley grower to plant a vineyard to produce Burgundy is to ________.

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

The Brazil nut tree, Bertholletia excels (n = 17), is native to tropical rain forests of South America. It is a hardwood tree that can grow to over 50 metres tall, is a source of high-quality timber, and is a favourite nesting site for harpy eagles. As the rainy season ends, tough-walled fruits, each containing 8-25 seeds (Brazil nuts), fall to the forest floor. Brazil nuts are composed primarily of endosperm. About $50 million worth of nuts are harvested each year. Scientists have discovered that the pale yellow flowers of Brazil nut trees cannot fertilise themselves and admit only female orchid bees as pollinators. The agouti (Dasyprocta spp.), a cat-sized rodent, is the only animal with teeth strong enough to crack the hard wall of Brazil nut fruits. It typically eats some of the seeds, buries others, and leaves still others inside the fruit, which moisture can now enter. The uneaten seeds may subsequently germinate. Orchid bees are to Brazil nut trees as ________ are to pine trees.

Which of the following pollinating agents is correctly matched with the type of plant it helps pollinate?

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

"Golden Rice" ________.

A fruit is

Which of the following flower parts develops into the pulp of a fleshy fruit?

Plant biotechnology is an effective tool for ________.

Which of these events occurs first in seed germination?

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?

A typical angiosperm embryo sac (female gametophyte) has ________ cells.

"Bt corn"