Question 1

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

Accepted Answer

Growth in the sporophyte stage of an angiosperm occurs at meristems, which are regions of actively dividing cells. This growth occurs through mitosis, not meiosis. Flowers are reproductive structures and do not contribute to the growth of the sporophyte plant. Seeds are the result of fertilization and are not directly involved in growth.

Question 2

Please refer to the following art of the cross-sections of two trees to answer the following questions.
 
-These trees most likely grew in an environment with ________.

Accepted Answer

The cross-sections of the trees show distinct growth rings, indicating that they experienced periodic variations in growth conditions such as alternations of warm and cold seasons.

Question 3

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. Pollinators such as bees and butterflies are attracted to the scent of flowers and will visit them to collect nectar and pollen, inadvertently spreading pollen between flowers and helping to fertilize them. This increases the likelihood that the flowers will produce viable seeds and offspring, which is essential for the survival and reproduction of the plant species.

Question 4

Which of the following is an example of flowering plant/animal interdependence? I)Most angiosperms depend on insects,birds,or mammals for pollination.
II)Most angiosperms depend on insects,birds,or mammals for seed dispersal.
III)Most land animals depend on angiosperms for food.

Accepted Answer

All three statements are examples of interdependence: angiosperms rely on animals for pollination and seed dispersal, and many land animals rely on angiosperms for food.

Question 5

As a beaver chews from the outside to the inside of a tree,in what order does it encounter plant tissues?

Accepted Answer

The answer of As a beaver chews from the outside...

Question 6

The arrows in the figure below illustrate ________.

Accepted Answer

The arrows in the figure are showing the direction of primary growth in the root and shoot of a plant. Primary growth is the elongation of the plant body in the shoot and root tips due to cell division and expansion. Therefore, choice D, primary growth, is the correct answer.

Question 7

What typically has to happen before a fruit develops? I)flowering
II)pollination
III)double fertilization

Accepted Answer

Flowering, pollination, and double fertilization are all necessary steps before a fruit develops. Flowering produces the structures needed for reproduction, pollination transfers pollen to the stigma, and double fertilization leads to the formation of seeds and fruit.

Question 8

Without honeybees,which process in the life cycle of plants such as apples,almonds,blueberries,and pumpkins is most affected?

Accepted Answer

Pollination is the reproductive process in plants that involves the transfer of pollen from the male to the female parts, leading to fertilization and the development of seeds. Honeybees are one of the primary pollinators of these crops, and without them, there would be a significant reduction in their productivity and quality. Other pollinators, such as wild bees, butterflies, and birds, might be able to compensate for the loss of honeybees, but their effectiveness can vary widely depending on the crop, location, and timing. Therefore, it is essential to protect and support pollinator diversity to ensure the resilience and sustainability of our food systems.

Question 9

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

Accepted Answer

The biggest difference between angiosperms and gymnosperms is the production of seeds. In angiosperms, seeds are enclosed within the ovary (fruit) and are formed after double fertilization. In gymnosperms, there is no fruit and seeds are directly naked on the scales of the cones. Therefore, the structure that should have the greatest difference is the seed.

Question 10

Please refer to the following art of the cross-sections of two trees to answer the following questions.
 
-When were the cross-sections of these trees made?

Accepted Answer

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

Question 11

Please refer to the following art of the cross-sections of two trees to answer the following questions.
 
-Which statement CORRECTLY compares the growth of these two trees?

Accepted Answer

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

Question 12

Bermudagrass is a plant that is commonly used on golf courses.It has a fibrous root system,and its leaf veins are parallel.Because it is 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 fits the description of a perennial monocot because it has a fibrous root system and parallel leaf veins, and it reproduces asexually through horizontal stems that root at nodes. Additionally, it is mentioned that it can live for many years, which supports the perennial classification.

Question 13

Which of the following is the usual trigger for seed germination?

Accepted Answer

Water is the usual trigger for seed germination. When seeds come in contact with water, it absorbs the water which causes the seed coat to swell and rupture, making way for the emergence of the sprout. Without water, seeds can remain dormant and will not germinate.

Question 14

Which plant structure is adapted for attracting beneficial insects such as honeybees?

Accepted Answer

Flowers are the reproductive structures of plants, and many plants have evolved to attract beneficial insects to aid in pollination. Honeybees are important pollinators for many plants, and flowers have adapted to attract them through various colors, shapes, and scents.

Question 15

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 eudicot,is...

Question 16

Examine the figure below.What process has to occur to produce a haploid embryo sac?

Accepted Answer

The answer of Examine the figure below.What process has to...

Question 17

Examine the figure below.Secondary growth involves cell division in the ________.

Accepted Answer

The answer of Examine the figure below.Secondary growth involves cell...

Question 18

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 catch on animal fur or people's clothing and are then carried away from the parent plant, allowing the seeds inside to be scattered over a wider area.

Question 19

Please refer to the following 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 following art of...

Question 20

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

Accepted Answer

Pruning a plant at the dotted line will encourage the growth of lateral branches, resulting in a bushier plant with more foliage. It may also lead to increased flowering as the plant produces more branches on which blooms can develop. However, pruning is unlikely to have a significant impact on the plant's height or root growth.

Quiz 28: The Life of a Flowering Plant

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

Please refer to the following art of the cross-sections of two trees to answer the following questions. -These trees most likely grew in an environment with ________.

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

Which of the following is an example of flowering plant/animal interdependence? I) Most angiosperms depend on insects,birds,or mammals for pollination. II) Most angiosperms depend on insects,birds,or mammals for seed dispersal. III) Most land animals depend on angiosperms for food.

As a beaver chews from the outside to the inside of a tree,in what order does it encounter plant tissues?

The arrows in the figure below illustrate ________.

What typically has to happen before a fruit develops? I) flowering II) pollination III) double fertilization

Without honeybees,which process in the life cycle of plants such as apples,almonds,blueberries,and pumpkins is most affected?

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

Please refer to the following art of the cross-sections of two trees to answer the following questions. -When were the cross-sections of these trees made?

Please refer to the following art of the cross-sections of two trees to answer the following questions. -Which statement CORRECTLY compares the growth of these two trees?

Which of the following is the usual trigger for seed germination?

Which plant structure is adapted for attracting beneficial insects such as honeybees?

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.

Examine the figure below.What process has to occur to produce a haploid embryo sac?

Examine the figure below.Secondary growth involves cell division in the ________.

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

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