The role of floral traits in structuring plant-pollinator interactions Clara Primante
... classical view is to consider one or few plants and their pollinators. However, plants species share pollinators with other co-occurring, co-flowering plant species, with which they may establish indirect interactions (competition and ...
... classical view is to consider one or few plants and their pollinators. However, plants species share pollinators with other co-occurring, co-flowering plant species, with which they may establish indirect interactions (competition and ...
Kingdom Plantae - f
... the sporophyte, a capsule is formed, within which meiosis occurs and the spores are produced. When the spores are mature, the top of the capsule, the operculum, pops off and the spores are then dispersed by the wind. Frequently, an immature capsule is covered by a thin tissue layer called the calypt ...
... the sporophyte, a capsule is formed, within which meiosis occurs and the spores are produced. When the spores are mature, the top of the capsule, the operculum, pops off and the spores are then dispersed by the wind. Frequently, an immature capsule is covered by a thin tissue layer called the calypt ...
IJBT 7(4) 536-540
... Gladiolus19, Narcissus tazetta20 and Scilla indica21. Although embryos could be obtained through anther culture in Amaryllis, they gave rise to only roots and did not develop into plantlets22. ___________ *Author for correspondence: Tel: 91-824-2423217 E-mail: [email protected] ...
... Gladiolus19, Narcissus tazetta20 and Scilla indica21. Although embryos could be obtained through anther culture in Amaryllis, they gave rise to only roots and did not develop into plantlets22. ___________ *Author for correspondence: Tel: 91-824-2423217 E-mail: [email protected] ...
Flower numbers, pod production, pollen viability, and pistil function
... et al., 1999, 2006). Yields of kabuli chickpeas are less than desi chickpea under terminal drought and pod abortion by kabuli chickpea is more sensitive to water stress than that of desi chickpea (Leport et al., 2006). While pod abortion in chickpea has previously been studied (Leport et al., 2006), ...
... et al., 1999, 2006). Yields of kabuli chickpeas are less than desi chickpea under terminal drought and pod abortion by kabuli chickpea is more sensitive to water stress than that of desi chickpea (Leport et al., 2006). While pod abortion in chickpea has previously been studied (Leport et al., 2006), ...
Sexual Reproduction - SD43 Teacher Sites
... and egg cells are produced in male and female cones (Figure 6.32). Such cone-bearing plants are called conifers. Pollen is released from the male cones and is carried by the wind to the female cones. The embryo is protected within seeds in the female cone and completes its development there. The win ...
... and egg cells are produced in male and female cones (Figure 6.32). Such cone-bearing plants are called conifers. Pollen is released from the male cones and is carried by the wind to the female cones. The embryo is protected within seeds in the female cone and completes its development there. The win ...
MELASTOMATACEAE
... GEOGRAPHY: widespread in tropics, most diverse in South America HABITAT: mostly understory trees, heat and moisture requirements vary ROSIDAE CHARACTERS: petals separate, stamens twice the petals in number MYRTALES CHARACTERS: connate carpels, stamens at least twice the petals, tendency to flower pa ...
... GEOGRAPHY: widespread in tropics, most diverse in South America HABITAT: mostly understory trees, heat and moisture requirements vary ROSIDAE CHARACTERS: petals separate, stamens twice the petals in number MYRTALES CHARACTERS: connate carpels, stamens at least twice the petals, tendency to flower pa ...
Life Cycle of a Pumpkin
... A pumpkin is a fruit. It grows on a vine like other kinds of squash. Pumpkins can be bumpy or smooth, large or small, long or round. They can be orange, white, yellow, or red. Each year there is a new crop of pumpkins. Their hard shells have deep lines that go from top to bottom. Seed ...
... A pumpkin is a fruit. It grows on a vine like other kinds of squash. Pumpkins can be bumpy or smooth, large or small, long or round. They can be orange, white, yellow, or red. Each year there is a new crop of pumpkins. Their hard shells have deep lines that go from top to bottom. Seed ...
bryophytes - faculty.fairfield.edu
... To understand how it does this, it is important to understand the basics of the angiosperm life cycle. See the “Life Cycle of an Angiosperm”. You will need this to complete the following section a) Stage 1: The angiosperm that you see in the figure is the sporophyte. The sporophyte is the dominant s ...
... To understand how it does this, it is important to understand the basics of the angiosperm life cycle. See the “Life Cycle of an Angiosperm”. You will need this to complete the following section a) Stage 1: The angiosperm that you see in the figure is the sporophyte. The sporophyte is the dominant s ...
An Introduction to the Mesozoic Palaeobotany
... The Mesozoic age was a time of great changes, not only in animals but also in the terrestrial vegetation. The Mesozoic flora was the vegetation eaten by the dinosaurs, other reptiles and mammal herbivores during this Era. New genus and new plants, e.g. gymnosperms, first appeared in their current re ...
... The Mesozoic age was a time of great changes, not only in animals but also in the terrestrial vegetation. The Mesozoic flora was the vegetation eaten by the dinosaurs, other reptiles and mammal herbivores during this Era. New genus and new plants, e.g. gymnosperms, first appeared in their current re ...
1. List the characteristics that distinguish plants from organisms in
... • Spore production in sporangium from the sporophyte • Gamete production from the antheridium and archegonium on the ...
... • Spore production in sporangium from the sporophyte • Gamete production from the antheridium and archegonium on the ...
and carpellate flower
... 2. mitosis in gametophyte produces sperm or eggs Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... 2. mitosis in gametophyte produces sperm or eggs Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
plant reproduction
... At the end you can test your answers looking at slide 11 on the power point. Plants are the key to life on Earth. Without them many other living organisms would soon disappear. This is because higher life forms depend on plants, either directly or indirectly, for their food. Most plants, however, ar ...
... At the end you can test your answers looking at slide 11 on the power point. Plants are the key to life on Earth. Without them many other living organisms would soon disappear. This is because higher life forms depend on plants, either directly or indirectly, for their food. Most plants, however, ar ...
GENES IN MAIZE FOR POLLEN STERILITY Studies of a
... The exact time of degeneration with reference to meiotic stages was not established. I t is possible to say, however, that this degeneration begins somewhere near the time of synapsis. In maize synapsis takes place a relatively long time before metaphase of the first division. At this stage the anth ...
... The exact time of degeneration with reference to meiotic stages was not established. I t is possible to say, however, that this degeneration begins somewhere near the time of synapsis. In maize synapsis takes place a relatively long time before metaphase of the first division. At this stage the anth ...
Solanaceae - Sakshieducation.com
... to the right and anterior carpel to the left at an angle of 45°. ...
... to the right and anterior carpel to the left at an angle of 45°. ...
Chapter 31
... (in general)…con’t • Alternate leaves with secretory cells are primitive compared to opposite or whorled leaves without secretory cells. • Many separate stamens are more primitive than few or united stamens • Single fruits preceded aggregate fruits formed from several ovaries • OVERALL: simple struc ...
... (in general)…con’t • Alternate leaves with secretory cells are primitive compared to opposite or whorled leaves without secretory cells. • Many separate stamens are more primitive than few or united stamens • Single fruits preceded aggregate fruits formed from several ovaries • OVERALL: simple struc ...
Plants Fungus and Lichens Review
... cells are diploid and have 46 chromosomes. What do the terms haploid and diploid refer to? 15. What is a gamete? 16. What is a gametophyte? 17. What is the name of the male and female gametophyte and what does each produce? 18. What is a sporophyte? 19. Define sporangium. 20. Which stage of the life ...
... cells are diploid and have 46 chromosomes. What do the terms haploid and diploid refer to? 15. What is a gamete? 16. What is a gametophyte? 17. What is the name of the male and female gametophyte and what does each produce? 18. What is a sporophyte? 19. Define sporangium. 20. Which stage of the life ...
Plants Review and Key
... cells are diploid and have 46 chromosomes. What do the terms haploid and diploid refer to? 15. What is a gamete? 16. What is a gametophyte? 17. What is the name of the male and female gametophyte and what does each produce? 18. What is a sporophyte? 19. Define sporangium. 20. Which stage of the life ...
... cells are diploid and have 46 chromosomes. What do the terms haploid and diploid refer to? 15. What is a gamete? 16. What is a gametophyte? 17. What is the name of the male and female gametophyte and what does each produce? 18. What is a sporophyte? 19. Define sporangium. 20. Which stage of the life ...
Can andromonoecy explain low fruit : flower ratios in the Proteaceae
... clearly indicate that flowers which failed to set seed necessarily showed impaired female function (i.e. dysfunctional ovules). Secondly, the three Banksia species which have now been examined in detail all have apparently normal ovules in almost every flower, i.e. flowers are at least structurally ...
... clearly indicate that flowers which failed to set seed necessarily showed impaired female function (i.e. dysfunctional ovules). Secondly, the three Banksia species which have now been examined in detail all have apparently normal ovules in almost every flower, i.e. flowers are at least structurally ...
1 Plantae Life on Earth depends on the ability of plants to capture
... Life on Earth depends on the ability of plants to capture sun's energy. Directly or indirectly, members of the green kingdom, plantae, provide food and shelters for all other organisms including humans. Plants also generate much of the oxygen we breathe and help heal us when we are sick. The biosphe ...
... Life on Earth depends on the ability of plants to capture sun's energy. Directly or indirectly, members of the green kingdom, plantae, provide food and shelters for all other organisms including humans. Plants also generate much of the oxygen we breathe and help heal us when we are sick. The biosphe ...
Lesson 3 | Plant Reproduction
... fertilized. The seed contains an embryo, along with a food supply and a protective covering. Seedless plants grow from haploid spores, not seeds. ...
... fertilized. The seed contains an embryo, along with a food supply and a protective covering. Seedless plants grow from haploid spores, not seeds. ...
Chapter 38 - Macmillan Learning
... the two gametes meet, fertilization is clearly a low-probability event. The evolution of pollen made it possible for male gametes to reach the female gametophyte without an aqueous conduit. With this selective advantage, pollen-bearing plants were able to colonize the land. In the first land plants, ...
... the two gametes meet, fertilization is clearly a low-probability event. The evolution of pollen made it possible for male gametes to reach the female gametophyte without an aqueous conduit. With this selective advantage, pollen-bearing plants were able to colonize the land. In the first land plants, ...
Operation Flower Dissection
... 3) Next remove the petals, the stamens, and the pistil, again counting the number of each part and recording this. Carefully tape and label them on the paper (e.g., 4 petals). 4) Before taping the stamens, shake some of the pollen grains from the anthers onto the paper and tape down. 5) Give student ...
... 3) Next remove the petals, the stamens, and the pistil, again counting the number of each part and recording this. Carefully tape and label them on the paper (e.g., 4 petals). 4) Before taping the stamens, shake some of the pollen grains from the anthers onto the paper and tape down. 5) Give student ...
GCMS lesson plan November 7
... Competency: Pollination and Fertilization Standard: 6.3d Describe and summarize how an egg and sperm unite in the reproduction of angiosperms and gymnosperms. 6.3d(a). The path of the sperm cells to the egg cell in the ovary of a flower. 6.3d(b). The structures and functions of parts of a seed in th ...
... Competency: Pollination and Fertilization Standard: 6.3d Describe and summarize how an egg and sperm unite in the reproduction of angiosperms and gymnosperms. 6.3d(a). The path of the sperm cells to the egg cell in the ovary of a flower. 6.3d(b). The structures and functions of parts of a seed in th ...
Lecture 3 – Floral Morphology
... MONOECIOUS (noun: monoecy) – “One house”. Hermaphroditic plants with imperfect flowers, staminate and pistillate, on the same individual DIOECIOUS (noun: dioecy) – “Two houses”. Each individual possesses only one kind of imperfect flower, staminate or pistillate. Humans and most animals are “dioecio ...
... MONOECIOUS (noun: monoecy) – “One house”. Hermaphroditic plants with imperfect flowers, staminate and pistillate, on the same individual DIOECIOUS (noun: dioecy) – “Two houses”. Each individual possesses only one kind of imperfect flower, staminate or pistillate. Humans and most animals are “dioecio ...
Pollination
Pollination is a process by which pollen is transferred from the anther to the stigma of the plant, thereby enabling fertilization and reproduction. It is unique to the angiosperms, the flower-bearing plants.In spite of a common perception that pollen grains are gametes, like the sperm cells of animals, this is incorrect; pollination is an event in the alternation of generations. Each pollen grain is a male haploid gametophyte, adapted to being transported to the female gametophyte, where it can effect fertilization by producing the male gamete (or gametes), in the process of double fertilization). A successful angiosperm pollen grain (gametophyte) containing the male gametes is transported to the stigma, where it germinates and its pollen tube grows down the style to the ovary. Its two gametes travel down the tube to where the gametophyte(s) containing the female gametes are held within the carpel. One nucleus fuses with the polar bodies to produce the endosperm tissues, and the other with the ovule to produce the embryo Hence the term: ""double fertilization"".In gymnosperms, the ovule is not contained in a carpel, but exposed on the surface of a dedicated support organ, such as the scale of a cone, so that the penetration of carpel tissue is unnecessary. Details of the process vary according to the division of gymnosperms in question.The receptive part of the carpel is called a stigma in the flowers of angiosperms. The receptive part of the gymnosperm ovule is called the micropyle. Pollination is a necessary step in the reproduction of flowering plants, resulting in the production of offspring that are genetically diverse.The study of pollination brings together many disciplines, such as botany, horticulture, entomology, and ecology. The pollination process as an interaction between flower and pollen vector was first addressed in the 18th century by Christian Konrad Sprengel. It is important in horticulture and agriculture, because fruiting is dependent on fertilization: the result of pollination. The study of pollination by insects is known as anthecology.