Question 1

All seed plants

Accepted Answer

All seed plants are heterosporous, meaning they produce separate male and female sporangia that develop into different types of spores. This is a defining characteristic of seed plants and sets them apart from other groups of plants such as ferns and mosses. The other options are not true for all seed plants - not all produce flowers or fruit, not all have companion cells in the phloem, and not all have cones (this is specific to gymnosperms).

Question 2

In wild populations, self-pollination is often seen as detrimental because it results in a lack of genetic mixing.This issue is most relevant to plants with _______ flowers, rather than those with separate male and female flowers.

Accepted Answer

The answer of In wild populations, self-pollination is often seen...

Question 3

In a search for medicines in a relatively unexplored tropical jungle, which approach is most likely to be successful?

Accepted Answer

Talking to local residents to find out which plants they use is the most effective approach since they have knowledge of the medicinal plants and their uses. They have been using these plants for generations and know how to use them effectively. This knowledge has been passed down from their ancestors, and they can provide valuable insights into the plant's properties and potential benefits.

Question 4

More than half of the world's human population obtains most of its daily calories from

Accepted Answer

Rice is the staple food for over half of the world's population, especially in Asian countries such as China, India, Indonesia, and Bangladesh. It is a major source of carbohydrates and provides essential nutrients such as vitamins and minerals. While other crops such as beans, corn, wheat, and oats are also important for human consumption, they do not dominate the global food supply to the extent that rice does.

Question 5

In open agricultural areas, rows of trees or shrubs are often planted to act as windbreaks.The roots of these plants reduce _______ by anchoring the soil and preventing wind or water from washing it away.

Accepted Answer

The answer of In open agricultural areas, rows of trees...

Question 6

In seed plants, secondary growth derived from the _______ allowed these plants to grow to great heights to compete for sunlight.

Accepted Answer

The answer of In seed plants, secondary growth derived from...

Question 7

The innovation that allowed seed plants to reproduce successfully across much of the terrestrial landscape was the use of _______ to distribute male gametes.

Accepted Answer

The answer of The innovation that allowed seed plants to...

Question 8

While hiking in South America, a member of your group becomes ill with fever and chills after passing through a swampy area.A resident of the area removes bark from a nearby tree and has the ill person chew on it, which has a beneficial effect.The effective ingredient was likely _______ from the _______ tree.

Accepted Answer

The most likely effective ingredient in the bark from a tree in South America would be quinine, which is found in the bark of the Cinchona tree. Quinine is commonly used to treat malaria and has a long history of traditional use in South America. Atropine is found in the belladonna and hazel trees and is not typically used to treat fevers or chills. Bromelain is found in pineapples and is not known to have properties that would help with a fever or chills.

Question 9

Rice has been cultivated in Asia for approximately _______ years.

Accepted Answer

Rice has been cultivated in Asia for approximately 8,000 years. A is too low, C, D, and E are too high.

Question 10

The Judean date palm provides us with a dramatic example of the ability of a seed to withstand the test of time as well as environmental extremes.The feature of this structure most likely responsible for this durability is its _______.

Accepted Answer

The answer of The Judean date palm provides us with...

Question 11

Which plant or plant-related tissue is not known to be medicinally useful?

Accepted Answer

While some parts of the cycad plant have been used in traditional medicine for centuries, recent research has shown that they contain toxins that can cause brain damage and other health problems. Therefore, they are not considered to be medicinally useful.

Question 12

Which drug is a chemotherapeutic agent derived from Pacific yew that is used in fighting breast and ovarian cancers?

Accepted Answer

Taxol is the chemotherapeutic agent derived from Pacific yew that is used in fighting breast and ovarian cancers. Atropine is an anticholinergic drug used to treat bradycardia and organophosphate poisoning. Bromelain is a digestive enzyme derived from pineapple that is used in supplements for inflammation and pain. Menthol is an organic compound used in topical analgesics and cough drops. Digitalin is a cardiac glycoside used to treat heart failure.

Question 13

Another name for a female cone is a _______.If pine trees lacked the woody scales of these structures, their seeds would be entirely unprotected.

Accepted Answer

The answer of Another name for a female cone is...

Question 14

Despite the absence of true fruits in gymnosperms, many conifers encase their seeds in a fleshy reward to entice _______ to aid in their seed dispersal.

Accepted Answer

The answer of Despite the absence of true fruits in...

Question 15

Why are plants such as the Pacific yew not harvested as extensively as they were in the past?

Accepted Answer

The medically active ingredient in Pacific yew can now be synthesized, which eliminates the need for extensive harvesting of the plant.

Question 16

For humans, two of the top benefits provided by seed plants are

Accepted Answer

Seed plants provide nutrition through their fruits, seeds, and sometimes even their leaves. Many seed plants also contain compounds that are useful in medicine. While some plants may provide hydration through their fruits or roots, it is not one of the top benefits provided by seed plants for humans. Aesthetic value may be a benefit for some individuals, but it is not as universally important as nutrition and medicine.

Question 17

An adaptation of the lodgepole pine is that their cones open only after treatment with _______.

Accepted Answer

The answer of An adaptation of the lodgepole pine is...

Question 18

Which statement regarding our dependence on a small number of domesticated plant species for food is true?

Accepted Answer

Growing relatively few varieties of certain crops reduces genetic variation within plant populations and puts us at greater risk of sweeping crop losses due to diseases and pests. This is because a lack of genetic diversity makes it easier for pests and diseases to wipe out entire crops. The other answer choices are not entirely true or are too simplistic.

Question 19

In conifers, the primary role of _______ gametophytes is to convey the sperm nuclei to the egg, permitting fusion of the two, also known as fertilization, after which the female gametophyte nourishes the developing embryo.

Accepted Answer

The answer of In conifers, the primary role of _______...

Question 20

Of the four groups of gymnosperms, conifers are the most abundant.This group uses _______ for pollination and has dispensed with the need for water for fertilization, allowing its members to flourish in arid environments.

Accepted Answer

The answer of Of the four groups of gymnosperms, conifers...

Quiz 28: The Evolution of Seed Plants