Question 1

In a sporophyte of an angiosperm, growth occurs at ________ via ________.

Accepted Answer

In angiosperms, growth occurs at meristems through the process of mitosis, which is responsible for cell division and growth.

Question 2

Bermudagrass is a plant that is commonly used on golf courses. It has a fibrous root system, and its leaf veins are parallel. As a result of being mowed on a regular basis in golf courses, it spreads via horizontal stems that root at the nodes, rather than by seed. It can live for many years. What is the best classification for bermudagrass on a golf course?

Accepted Answer

Bermudagrass is a perennial because it can live for many years, a monocot because it has parallel leaf veins, and it reproduces asexually through horizontal stems that root at the nodes.

Question 3

Use this figure to answer the following questions. 
-The terminal bud in the figure above eventually differentiates into a flower, which is pollinated and forms a fruit. Which structure has cells with the fewest copies of the plant's genetic material?

Accepted Answer

The egg cell is a gamete and is haploid, containing only one set of chromosomes, which is the fewest number of copies of the plant's genetic material compared to other structures that are diploid or triploid.

Question 4

Use this figure to answer the questions. 
-Examine the figure. Which structure has the same number of copies of chromosomes as the egg cell?

Accepted Answer

The nucleus in the pollen grain is haploid, like the egg cell, both having one set of chromosomes.

Question 5

While on a hike, you notice that several burrs have become attached to your socks. You quickly pull them off. Inside the burr are several seeds. Burrs are produced by certain plants and frequently catch on animal fur (or people's clothing). After thinking about it, you decide that the burr is a type of ________ that is an adaptation for ________.

Accepted Answer

Burrs are a type of fruit that is an adaptation for seed dispersal. The burrs attach to animal fur or people's clothing, and when the animal or person moves, the burrs are carried away from the plant. This helps to disperse the seeds and increase the chances that they will find a suitable place to germinate and grow.

Question 6

Use this figure to answer the following questions. 
-The arrows in the figure above illustrate ________.

Accepted Answer

The arrows in the figure likely illustrate primary growth, which involves the elongation of the plant stem and roots, typically occurring at the apical meristems.

Question 7

Use this figure to answer the questions. 
-Examine the figure. Secondary growth involves cell division in the ________.

Accepted Answer

Secondary growth in plants involves the vascular cambium and cork cambium, which contribute to the increase in thickness or girth of the plant.

Question 8

Unlike angiosperms, gymnosperms like pines have single instead of double fertilization, but otherwise have an identical life cycle. What structure should show the greatest difference between angiosperms and gymnosperms?

Accepted Answer

The seed structure shows the greatest difference between angiosperms and gymnosperms. In gymnosperms, seeds are "naked" and not enclosed within a fruit, whereas in angiosperms, seeds are enclosed within a fruit.

Question 9

What is the likely effect of pruning a plant at the dotted line?

Accepted Answer

The answer of What is the likely effect of pruning...

Question 10

Please refer to the art of the cross-sections of two trees to answer the following questions. 
-How old are these trees?

Accepted Answer

The answer of Please refer to the art of the...

Question 11

What typically has to happen before a fruit develops?

Accepted Answer

For a fruit to develop, flowering, pollination, and double fertilization must occur. Flowering produces the structures necessary for reproduction, pollination allows for the transfer of pollen to the stigma, and double fertilization leads to the formation of seeds and fruit development.

Question 12

What describes the interdependence between flowering plants and animals?

Accepted Answer

Most angiosperms rely on animals for both pollination and seed dispersal, and many land animals depend on angiosperms as a primary food source, illustrating a mutual interdependence.

Question 13

The diploid number for the tomato, a eudicot, is 24. One of its pollen grains has ________ chromosomes, and the nutritive tissue of the seed has ________ chromosomes.

Accepted Answer

The answer of The diploid number for the tomato, a...

Question 14

Which statement CORRECTLY compares the growth of these two trees?

Accepted Answer

The tree on the left has more rings than the tree on the right, indicating that it grew at a faster rate.

Question 15

What initiates seed germination?

Accepted Answer

Water uptake by the seed, known as imbibition, is the primary trigger for seed germination, activating metabolic processes necessary for growth.

Question 16

Use this figure to answer the questions. 
-Examine the figure. What process occurs in the cork cambium?

Accepted Answer

The cork cambium is a type of meristematic tissue in plants where mitosis occurs, leading to the production of new cells for growth and the formation of protective layers like bark.

Question 17

Humans domesticated the rose from a wild ancestor with large, scented flowers. Why might fragrant chemicals in flowers be adaptive for wild roses?

Accepted Answer

Fragrant chemicals in flowers are adaptive for wild roses because they attract pollinators, which are essential for the plant's reproduction by facilitating the transfer of pollen.

Question 18

What represents one year of growth in the figure?

Accepted Answer

One year of growth in trees is typically represented by one white ring (spring/summer growth) plus an adjacent dark ring (fall/winter growth).

Question 19

Use this figure to answer the questions. 
-Examine the figure. What process has to occur to produce a haploid embryo sac?

Accepted Answer

The process of forming a haploid embryo sac involves meiosis to produce haploid cells, followed by mitosis to develop the multicellular structure of the embryo sac.

Question 20

These trees most likely grew in an environment with ________.

Accepted Answer

Trees typically show growth rings that indicate alternating warm and cold seasons, as they grow more during warm periods and less during cold periods.

Quiz 28: The Life of a Flowering Plant

In a sporophyte of an angiosperm, growth occurs at via .

Use this figure to answer the following questions. -The terminal bud in the figure above eventually differentiates into a flower, which is pollinated and forms a fruit. Which structure has cells with the fewest copies of the plant's genetic material?

Use this figure to answer the questions. -Examine the figure. Which structure has the same number of copies of chromosomes as the egg cell?

Use this figure to answer the following questions. -The arrows in the figure above illustrate ________.

Use this figure to answer the questions. -Examine the figure. Secondary growth involves cell division in the ________.

Unlike angiosperms, gymnosperms like pines have single instead of double fertilization, but otherwise have an identical life cycle. What structure should show the greatest difference between angiosperms and gymnosperms?

What is the likely effect of pruning a plant at the dotted line?

Please refer to the art of the cross-sections of two trees to answer the following questions. -How old are these trees?