Plants! - AP Biology with Ms. Costigan
... Spores from sporophyte disperse & develop into haploid gametes Gametophyte Dominant! ...
... Spores from sporophyte disperse & develop into haploid gametes Gametophyte Dominant! ...
ppt - Barley World
... The pollen pathway and double fertilization After double fertilization, there are at least four independent and genetically distinct generations coexisting in the seed: • maternal sporophyte diploid tissue • maternal gametophyte haploid tissue • offspring sporophyte diploid tissue • fusion of male ...
... The pollen pathway and double fertilization After double fertilization, there are at least four independent and genetically distinct generations coexisting in the seed: • maternal sporophyte diploid tissue • maternal gametophyte haploid tissue • offspring sporophyte diploid tissue • fusion of male ...
Chapter 21 Most land plants have (but charophyceans do not):
... a flagella without a need for water (microspores develop into the male gametophyte pollen grain, which contains the male gamete sperm) ...
... a flagella without a need for water (microspores develop into the male gametophyte pollen grain, which contains the male gamete sperm) ...
1. List the characteristics that distinguish plants from organisms in
... • Bodies divided into lobes • Can reproduce asexually from gemmae Anthocerophyta the hornworts • Sporophyte is horn-shaped • Cells have one large chloroplast • Most closely related to vascular plants ...
... • Bodies divided into lobes • Can reproduce asexually from gemmae Anthocerophyta the hornworts • Sporophyte is horn-shaped • Cells have one large chloroplast • Most closely related to vascular plants ...
Bryophytes and Ferns
... 12. The conspicuous part of a fern plant is a _____. a. haploid gametophyte b. diploid gametophyte c. diploid sorus d. diploid sporophyte e. haploid sporophyte 13. In the life cycle of a fern, the multicellular male gametangium (the sex organ that produces sperm cells) is called a(n) _____. a. anthe ...
... 12. The conspicuous part of a fern plant is a _____. a. haploid gametophyte b. diploid gametophyte c. diploid sorus d. diploid sporophyte e. haploid sporophyte 13. In the life cycle of a fern, the multicellular male gametangium (the sex organ that produces sperm cells) is called a(n) _____. a. anthe ...
Sperm Concentrations and Egg Fertilization Rates
... concentrations of 10i-lO" sperm nil- were necessary for maximum fertilization in certain salmonids and sturgeon. In a different setting Hourston and Rosenthal (1976) sampled surface water of milky discoloration above a school of spawning herring Clupcu huwigus yulusii and found concentrations of 148 ...
... concentrations of 10i-lO" sperm nil- were necessary for maximum fertilization in certain salmonids and sturgeon. In a different setting Hourston and Rosenthal (1976) sampled surface water of milky discoloration above a school of spawning herring Clupcu huwigus yulusii and found concentrations of 148 ...
Ch. 16 (word) - Ltcconline.net
... 1. Explain importance of micorrhizae to plant health. 2. Compare structure of multicellular algae and plants. Explain how plants are adapted to life on land. 3. Explain how the first terrestrial plants evolved. Describe the structure of Cooksonia. 4. Distinguish between bryophytes, seedless vascular ...
... 1. Explain importance of micorrhizae to plant health. 2. Compare structure of multicellular algae and plants. Explain how plants are adapted to life on land. 3. Explain how the first terrestrial plants evolved. Describe the structure of Cooksonia. 4. Distinguish between bryophytes, seedless vascular ...
chapter21_Plant Evolution(5
... 3 Eggs develop in an ovule within an ovary. 4 Pollination occurs and a tube grows from the pollen grain into the ovule, delivering two sperm. 5 Double fertilization occurs in all flowering plant life cycles. One sperm fertilizes the haploid egg. The other fertilizes a diploid cell, yielding a triplo ...
... 3 Eggs develop in an ovule within an ovary. 4 Pollination occurs and a tube grows from the pollen grain into the ovule, delivering two sperm. 5 Double fertilization occurs in all flowering plant life cycles. One sperm fertilizes the haploid egg. The other fertilizes a diploid cell, yielding a triplo ...
chapter21_Sections 5
... 3 Eggs develop in an ovule within an ovary. 4 Pollination occurs and a tube grows from the pollen grain into the ovule, delivering two sperm. 5 Double fertilization occurs in all flowering plant life cycles. One sperm fertilizes the haploid egg. The other fertilizes a diploid cell, yielding a triplo ...
... 3 Eggs develop in an ovule within an ovary. 4 Pollination occurs and a tube grows from the pollen grain into the ovule, delivering two sperm. 5 Double fertilization occurs in all flowering plant life cycles. One sperm fertilizes the haploid egg. The other fertilizes a diploid cell, yielding a triplo ...
Box 9.1 Mr. Hofmeister and the vanishing gametophyte
... Box 9.1 Mr. Hofmeister and the vanishing gametophyte The evolution of plant life cycles Sadly, plant life cycles are too often taught, if at all, through memorizing the stages and tissue types in the life cycle of a flowering plant. This is hardly an inspiration to further study in botany. Although ...
... Box 9.1 Mr. Hofmeister and the vanishing gametophyte The evolution of plant life cycles Sadly, plant life cycles are too often taught, if at all, through memorizing the stages and tissue types in the life cycle of a flowering plant. This is hardly an inspiration to further study in botany. Although ...
Plants - Cloudfront.net
... Seeds and their advantages • 1) Seed plants don’t depend on water to reproduce – Pollen (contains sperm) combines with egg – Egg hardens into a seed • 2) Nourishment and protection – Nourish: Nutrients inside seed for the embryo – Protection: Hard shell • 3) Allow dispersal – Carried by wind, water ...
... Seeds and their advantages • 1) Seed plants don’t depend on water to reproduce – Pollen (contains sperm) combines with egg – Egg hardens into a seed • 2) Nourishment and protection – Nourish: Nutrients inside seed for the embryo – Protection: Hard shell • 3) Allow dispersal – Carried by wind, water ...
Mock Exam I (BY 124) 1. When you see a green
... 19. A plant is said to be cross-pollinated if __________. A. Pollen grains are transferred to a flower on a different plant B. It is pollinated by wind C. It is pollinated by insects D. Its source of pollen is a different species of plant E. Pollen grains are transferred from a different flower on t ...
... 19. A plant is said to be cross-pollinated if __________. A. Pollen grains are transferred to a flower on a different plant B. It is pollinated by wind C. It is pollinated by insects D. Its source of pollen is a different species of plant E. Pollen grains are transferred from a different flower on t ...
Plant Classification (Nonvascular)
... the transfer of pollen from one individual plant to another. The most common mechanism to keep plants from fertilizing themselves is called are produced in self-incompatibility. This works similar to an animal’s immune system where a biochemical block prevents the pollen from completing its developm ...
... the transfer of pollen from one individual plant to another. The most common mechanism to keep plants from fertilizing themselves is called are produced in self-incompatibility. This works similar to an animal’s immune system where a biochemical block prevents the pollen from completing its developm ...
PPT
... the transfer of pollen from one individual plant to another. The most common mechanism to keep plants from fertilizing themselves is called are produced in self-incompatibility. This works similar to an animal’s immune system where a biochemical block prevents the pollen from completing its developm ...
... the transfer of pollen from one individual plant to another. The most common mechanism to keep plants from fertilizing themselves is called are produced in self-incompatibility. This works similar to an animal’s immune system where a biochemical block prevents the pollen from completing its developm ...
Flowers - StudyChamp
... Anther and pollen grains inside the pollen sacs. The pollen grains hold two sperm cells each inside. ...
... Anther and pollen grains inside the pollen sacs. The pollen grains hold two sperm cells each inside. ...
30LecturePresentation
... • Reduced gametophytes - develop within the walls of spores & retained within tissues of the parent sporophyte • Heterospory (male and female parts) • Ovules - consists of a megasporangium, megaspore, and one or more protective integuments (Gymnosperm have 1; Angiosperm have 2) • Pollen - Pollen gra ...
... • Reduced gametophytes - develop within the walls of spores & retained within tissues of the parent sporophyte • Heterospory (male and female parts) • Ovules - consists of a megasporangium, megaspore, and one or more protective integuments (Gymnosperm have 1; Angiosperm have 2) • Pollen - Pollen gra ...
seed plants
... Heterosporous: forms two different types of spores (micro- and megaspores; male and female spores) Male – pollen grains contain tube nucleus and generative cell (2 sperm nuclei) Female – female gametophyte contains egg and 2 polar nuclei ...
... Heterosporous: forms two different types of spores (micro- and megaspores; male and female spores) Male – pollen grains contain tube nucleus and generative cell (2 sperm nuclei) Female – female gametophyte contains egg and 2 polar nuclei ...
Nonvascular Plants - Life Sciences 4 All
... means of spores Spore cases called sporangia are found on the underside of sporophylls Sporangia often occur in clusters called sori ...
... means of spores Spore cases called sporangia are found on the underside of sporophylls Sporangia often occur in clusters called sori ...
Chapter 23 Plant Evolution 23.1 The Green Algal Ancestor of Plants
... A food reserve supports the emerging seedling until it can exist on its own. 5. The survival value of seeds contributes greatly to the success of seed plants and to their present dominance. 6. Seed plants are heterosporous, meaning they have microspores and megaspores. ...
... A food reserve supports the emerging seedling until it can exist on its own. 5. The survival value of seeds contributes greatly to the success of seed plants and to their present dominance. 6. Seed plants are heterosporous, meaning they have microspores and megaspores. ...
Plant Evolution - Biology Junction
... A food reserve supports the emerging seedling until it can exist on its own. 5. The survival value of seeds contributes greatly to the success of seed plants and to their present dominance. 6. Seed plants are heterosporous, meaning they have microspores and megaspores. 7. Microspores become male gam ...
... A food reserve supports the emerging seedling until it can exist on its own. 5. The survival value of seeds contributes greatly to the success of seed plants and to their present dominance. 6. Seed plants are heterosporous, meaning they have microspores and megaspores. 7. Microspores become male gam ...
Fertilisation
Fertilisation (also known as conception, fecundation and syngamy) is the fusion of gametes to initiate the development of a new individual organism. In animals, the process involves the fusion of an ovum with a sperm, which first creates a zygote and then leads to the development of an embryo. Depending on the animal species, the process can occur within the body of the female in internal fertilisation, or outside (external fertilisation). The cycle of fertilisation and development of new individuals is called sexual reproduction.