
Concept explainers
Test Your Understanding
Know and Comprehend
1. Seed plants lack which of the following structure(s)? (a) ovules surrounded by integuments (b) microspores and megaspores (c) vascular tissues (d) a large, nutritionally independent sporophyte (e) a large, nutritionally independent gametophyte

Introduction: Seed is a part of plant, which contains an embryo that will give rise to a new plant, stores food material in the form of “endosperm” for the growth of embryo, and seed coat for the protection of seed.
Answer to Problem 1TYU
Correct answer: Seed plants does not possess a “large, nutritionally independent gametophytic” structure. Hence, the correct answer is option (e).
Explanation of Solution
Reason for the correct answer:
Seeds are present inside the ovary, which is known as female gametophyte. The function of female gametophyte is to provide nutrition to a number of ovules that requires a large amount of nutrition. Gametophytes are microscopic in size and have endosperm in it as a reserve food material for the development of plant when the seed is set for the process of germination. Thus, if a nutritionally independent gametophyte is present then the development of the ovules will not be possible, which will result in the deterioration of ovules.
Option (e) is given as “a large, nutritionally independent gametophyte”.
A seed plant does not have a nutritionally independent gametophyte because the gametophyte depends upon the sporophyte for the nutrition. Hence, the correct answer is option (e).
Reasons for the incorrect answers:
Option (a) is given as “ovules surrounded by integuments”.
Seed plants produce ovules which are surrounded by the integuments. Later on, those integuments will result in the formation of seed coat and serve as a protective covering of the seed. Hence, option (a) is incorrect.
Option (b) is given as “microspores and megaspores”.
Seed plants produce both kinds of spores such as microspores (male gamete) and megaspores (female gamete). The condition of producing both types of spores is known as heterospory. Hence, option (b) is incorrect.
Option (c) is given as “vascular tissues”.
Plant body uses vascular tissues for the transport of food materials and water for the proper growth of plant body. Thus, vascular tissues are present in seed plants. Hence, option (c) is incorrect.
Option (d) is given as “a large, nutritionally independent sporophyte”.
Most of the seed plants have a large, nutritionally independent sporophyte. Hence, option (d) is incorrect.
Hence, options (a), (b), (c), and (d) are incorrect.
Nutritionally independent gametophyte is not present in seed plants.
Want to see more full solutions like this?
Chapter 28 Solutions
Biology (MindTap Course List)
- Describe and give a specific example of how successionary stage is related to species diversity?arrow_forwardExplain down bellow what happens to the cell in pictures not in words: Decreased pH in mitochondria Increased ATP Decreased pH in cytosol Increased hydrolysis Decreasing glycogen and triglycerides Increased MAP kinase activity Poor ion transport → For each one:→ What normally happens?→ What is wrong now?→ How does it mess up the cell?arrow_forward1.) Community Diversity: The brown and orange line represent two different plant communities. a. Which color represents the community with a higher species richness? b. Which color represents the community with a higher species evenness? Relative abundance 0.1 0.04 0.001 2 4 6 8 10 12 14 16 18 20 22 24 Rank abundance c. What is the maximum value of the Simpson's diversity index (remember, Simpson's index is D = p², Simpson's diversity index is 1-D)? d. If the Simpson's diversity index equals 1, what does that mean about the number of species and their relative abundance within community being assessed?arrow_forward
- 1.) Community Diversity: The brown and orange line represent two different plant communities. a. Which color represents the community with a higher species richness? b. Which color represents the community with a higher species evenness? Relative abundance 0.1 0.04 0.001 2 4 6 8 10 12 14 16 18 20 22 24 Rank abundance c. What is the maximum value of the Simpson's diversity index (remember, Simpson's index is D = p², Simpson's diversity index is 1-D)? d. If the Simpson's diversity index equals 1, what does that mean about the number of species and their relative abundance within community being assessed?arrow_forwardwhat measures can a mother to take to improve the produce of her to milk to her newborn baby ?arrow_forward1. Color the line that represents all ancestors of the Eastern white pine tree green (but only the ancestral line NOT shared with other organisms) 2. Oncle the last common ancestor of the Colorado blue spruce tree and Eastern white pine tree. 3. Put a box around the last common ancestor of the sugar maple tree and the dogwood tree. 4. Put a triangle around the last common ancestor of the red pine tree and the american holly bush. 5. Color the line that represents all ancestors of the Ponderosa pine tree red (including all shared ancestors). 6. Color the line that represents all ancestors of the American elm tree blue (including all shared ancestors). 7 Color the line that represents all ancestors of the Sabal palm tree purple (including all shared ancestors) 8. Using a yellow highlighter or colored pencil, circle the clade that includes all pine trees. 9. Using a orange highlighter or colored pencil, circle the clade that includes all gymnosperms 10. Can you tell…arrow_forward
- You have been hired as a public relations specialist to give invertebrates a good name. After all, they are much more than just creepy crawly bugs! Your first task though is to convince yourself that is true. The best way to do that is to start close to home. Find something in your house that is a product obtained directly from an invertebrate or only due to an invertebrate’s actions. Describe the product, its function and utility, as well as any human manufactured alternatives. Be sure to highlight the advantages of obtaining this directly from nature. Keep in mind, a product can be something you use, wear, eat, or enjoy for its visual appeal.arrow_forwardUse the following tree diagram to answer Questions #8-10. 8) Which of the following two animals are the most closely related based on the tree to the left? a) Pig and camel b) Hippo and pig c) Deer and cow 9) CIRCLE on the tree diagram where the common ancestor between a hippo and a cow is. 10) Put a SQUARE on the tree diagram where the common ancestor between a pig and a peccary is.arrow_forwardExplain: Healthy Cell Function Overview→ Briefly describe how a healthy cell usually works: metabolism (ATP production), pH balance, glycogen storage, ion transport, enzymes, etc. Gene Mutation and Genetics Part→ Focus on the autosomal recessive mutation and explain: How gene mutation affects the cell. How autosomal inheritance works. Compare the normal and mutated gene sequences simply. → Talk about possible consequences of a faulty hydrolytic enzyme.arrow_forward
- Can you fill out those termsarrow_forwardExplain down bellow what happens to the cell: Decreased pH in mitochondria Increased ATP Decreased pH in cytosol Increased hydrolysis Decreasing glycogen and triglycerides Increased MAP kinase activity Poor ion transport → For each one:→ What normally happens?→ What is wrong now?→ How does it mess up the cell?arrow_forwardAn 1100 pound equine patient was given 20 mg/kg sucralfate 3 times a day, 2.8 mg/kg famotidine twice a day, and 10mg/kg doxycycline twice a day. Sucralfate comes as a 1 gm tablet, famotidine as 20 mg tablets, and doxycycline as 100mg tablets. All are in bottles of 100 tablets.How many total mg are needed for the patient and how many tablets of each would be needed to provide each dose?How many bottles of each would be needed to have available if this patient were to be on this drug regimen for 5 days?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781337408332Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning





