BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
2020th Edition
ISBN: 9780135686553
Author: Audesirk
Publisher: PEARSON
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Chapter 22, Problem 3FTB
Seedless vascular plants must reproduce when conditions are wet because their sperm must. Two adaptations that allow seed plants to reproduce more efficiently on dry land are and. The seed plants fall into two major categories: the nonflowering and the flowering. Flowers were favored by natural selection because they. Fruits were favored by natural selection because they.
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Seedless vascular plants must reproduce when conditions are wet because their sperm must_______________ . Two adaptations that allow seed plants to reproduce more efficiently on dry land are_________ and_________ . The seed plants fall into two major categories: the nonflowering_______________ and the flowering_________ . Flowers were favored by natural selection because they__________ . Fruits were favored by natural selection because they_____________ .
Angiosperms ( flower bearing ) plants developed after gymnosperms ( cone bearing ) plants during the Mesozoic era Which of the following is a benefit to plants developing the ability to have flowers over cones ?
ANSWER CHOICES ARE IN THE PHOTO. thanks.
Seeds and pollen grains are key adaptations for life on land. These adaptations relate to reproductive success and survival advantages. The following questions require you to explain some of these adaptations.
A. Contrast sperm delivery in seedless plants with sperm delivery in seed plants. (5-6 sentence)
B. Discuss at least one feature of seed plants that contributed to their success on land in contrast with seedless plants. (2-3 sentences)
C. Flowering plants (Magnoliophyta) are the most successful of all plant groups in terms of their species diversity and ubiquity across habitat types. Climate warming is causing shifts in the timing of life history events for many species. Discuss how climate warming may influence reproductive strategies employed by flowering plants. (2-3 sentence)
Chapter 22 Solutions
BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
Ch. 22 - In an alternation of generations life cycle,...Ch. 22 - Prob. 2MCCh. 22 - Prob. 3MCCh. 22 - 4. In which of the following is the gametophyte...Ch. 22 - Prob. 5MCCh. 22 - 1. Scientists hypothesize that the ancestors of...Ch. 22 - Plant adaptations to life on land include a(n)...Ch. 22 - 3. Seedless vascular plants must reproduce when...Ch. 22 - 4. Three groups of nonvascular plants are _______,...Ch. 22 - 1. What is meant by “alternation of generations”?...
Ch. 22 - 2. Explain the evolutionary changes in plant...Ch. 22 - Describe evolutionary trends in the life cycles of...Ch. 22 - Prob. 4RQCh. 22 - List the structural adaptations necessary for the...Ch. 22 - The number of species of flowering plants is...Ch. 22 - List the adaptations of gymnosperms that have...Ch. 22 - What is a pollen grain? What role has it played in...Ch. 22 - The majority of all plants are seed plants. What...Ch. 22 - 1. Prior to the development of synthetic drugs,...Ch. 22 - 2. Only a few hundred of the more than 200,000...
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- Which of the following is NOT a caharacteristic of all seed plants? 1. a sporic life cycle 2. cell walls containing cellulose 3. life cycle is dominant in the sporophyte phase 4. reproductive organs found in flowers 5.nearlly all are photo-autotrophicarrow_forwardWhich of these pairs is mismatched? a. anther—produces microspores b. carpel—produces pollen c. ovule—becomes seed d. ovary—becomes fruit e. flower—is a reproductive structurearrow_forwardMost angiosperms incorporate the assistance of animals in their reproductive cycle. This is a major advancement that gave them an advantage over other plant lineages and helped them become the dominant type of plant on Earth today. Which of the following steps in the reproduction of angiosperms do animals assist with? Check all that apply. Pollination Fertilization Seed dispersalarrow_forward
- Which of the following statements regarding plants is false?a. Meiosis within anthers produces spores that develop intopollen.b. Meiosis within ovules produces spores that develop into anembryo sac.c. The male gametophyte is a pollen grain, and the femalegametophyte is an embryo sac.d. Meiosis directly produces sperm and egg cells in plantsarrow_forwardIn most plants the largest, longest-lived body is a diploid sporophyte. By one hypothesis, diploid dominance was favored because it allowed a greater level of genetic diversity. Suppose that a recessive mutation arises. It is mildly disadvantageous now, but it will be useful in some future environment. Explain why such a mutation would be more likely to persist in a fern than in a moss.arrow_forwardWhich option is TRUE regarding the life cycle of a flowering plant? gametophyte and sporophyte are codominant sporophyte is dominant gametophyte is dominant gametophyte is initially dominant and then the sporophyte becomes dominant sporophyte initially is dominant and then the gametophyte becomes dominantarrow_forward
- Put the following 3 fictional plants in order from earliest to most recent according to their characteristics: A. The Terpad Plant: This plant reproduces using spores and has proper leaves and vascular tissue. B. The Feltris Plant: The Feltris plant lives in moist environments since it doesn't have any vascular tissue to maintain hydration throughout the plant. This plant has no roots either but has small root-like structures called rhizoids which help anchor them to the ground. Water is also required in order for fertilization. C. The Lancelot Plant: This plant can grow in either moist or dry environments, has true roots, stems and leaves and reproduces via seeds which develop within an ovary.arrow_forwardMost angiosperms incorporate the assistance of animals in their reproductive cycle. This is a major advancement that gave them an advantage over other plant lineages and helped them become the dominant type of plant on Earth today. Which of the following steps in the reproduction of angiosperms do animals assist with? Check all that apply. A. Seed dispersal B. Pollination C. Fertilizationarrow_forwardWhich of the following are adaptations for reproduction in dry environments? - seeds and pollen - xylem and phloem - flowers and fruits - cuticle and stomataarrow_forward
- Which of the following observations would provide the strongest evidence that two plants belong to different biological species? * here are variations in their RNA sequences. The leaves and flowers show morphological differences. They produce viable but sterile offspring. They occupy unique habitats in an ecosystem.arrow_forwardWhich of the following incorrectly pairs a sporophyte embryo with its food source? * A. Moss embryo-archegonium and gametophyte plant B. Fern embryo-female sporophyte surrounding archegonium C. Pine embryo-female gametophyte tissue in nucellus D. Corn embryo-3N endosperm tissue in seedarrow_forwardWhich of the following are reproductive organs? Select all that apply A. Root B. Leaf C. Stem D. Seed E. Fruit F. Flowerarrow_forward
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