Plant Divisions ppt basic
... • What does the term Gymnosperm mean? • What is the evolutionary importance of needles? • What structures do conifers use to reproduce? • Even though wind-dispersal of pollen is inefficient, what did it allow plants to overcome? • What is the evolutionary advantage of a flower? • How does the fruit ...
... • What does the term Gymnosperm mean? • What is the evolutionary importance of needles? • What structures do conifers use to reproduce? • Even though wind-dispersal of pollen is inefficient, what did it allow plants to overcome? • What is the evolutionary advantage of a flower? • How does the fruit ...
Sexual Asexual Reproduction
... ovary. This is called ovulation. • The egg cell moves into the oviduct. • Many sperm are deposited in the vagina during sexual intercourse. They pass through the cervix, into the uterus and along the oviduct. A single sperm meets the egg cell in the oviduct and ...
... ovary. This is called ovulation. • The egg cell moves into the oviduct. • Many sperm are deposited in the vagina during sexual intercourse. They pass through the cervix, into the uterus and along the oviduct. A single sperm meets the egg cell in the oviduct and ...
Parts of a Flower - Biology Junction
... A flower is a specialized reproductive structure in angiosperms (flowering plants). The male and female gametophytes develop within the flowers, which promote pollination (the spreading of pollen from the male to the female part of a flower) and fertilization (the sperm and egg joining to form a zyg ...
... A flower is a specialized reproductive structure in angiosperms (flowering plants). The male and female gametophytes develop within the flowers, which promote pollination (the spreading of pollen from the male to the female part of a flower) and fertilization (the sperm and egg joining to form a zyg ...
Crape myrtles are important to pollinating insects
... myrtle is a non-native and has been in the U.S. since colonial times. Bees and flowers would seem to go together and one might suppose given its beautiful summer flowers that crape myrtle has been studied for its use by pollinators. Surprisingly, until now it has not been. Recently, UF/IFAS research ...
... myrtle is a non-native and has been in the U.S. since colonial times. Bees and flowers would seem to go together and one might suppose given its beautiful summer flowers that crape myrtle has been studied for its use by pollinators. Surprisingly, until now it has not been. Recently, UF/IFAS research ...
Plant Reproduction
... C. Angiosperms produce flowers which are used for sexual reproduction. 1. The stamen is the male reproductive organ. 2. The pistil, the female reproductive organ, contains the ovary at its base. 3. The appearance of a plant’s flowers can give clues about how the plant is pollinated. 4. After pollina ...
... C. Angiosperms produce flowers which are used for sexual reproduction. 1. The stamen is the male reproductive organ. 2. The pistil, the female reproductive organ, contains the ovary at its base. 3. The appearance of a plant’s flowers can give clues about how the plant is pollinated. 4. After pollina ...
Class: 12 Subject: Biology Topic: Sexual reproduction in
... In the process of megasporogenesis, one megaspore mother cell divides by mitotic division to produce four megaspores. In many angiosperms one megaspore develops into female gametophyte and rest of the three get degenerate. This is termed monosporic development of female gametophyte. ...
... In the process of megasporogenesis, one megaspore mother cell divides by mitotic division to produce four megaspores. In many angiosperms one megaspore develops into female gametophyte and rest of the three get degenerate. This is termed monosporic development of female gametophyte. ...
Compare and Contrast Process in Plants and
... Exercise: use the exercise given at the end of this section to identify different floral parts. Plant types based on the presence of reproductive structures: Monoecious or Dioecious Development in flowering plants I. Gametophyte - Development through gametogenesis (use figure 6 to illustrate gametog ...
... Exercise: use the exercise given at the end of this section to identify different floral parts. Plant types based on the presence of reproductive structures: Monoecious or Dioecious Development in flowering plants I. Gametophyte - Development through gametogenesis (use figure 6 to illustrate gametog ...
Review Material for Plant form and function
... • What mechanism explains the movement of sucrose from source to sink? – evaporation of water and active transport of sucrose from the sink – osmotic movement of water into the sucrose-loaded sieve-tube members creating a higher hydrostatic pressure in the source than in the sink – tension created ...
... • What mechanism explains the movement of sucrose from source to sink? – evaporation of water and active transport of sucrose from the sink – osmotic movement of water into the sucrose-loaded sieve-tube members creating a higher hydrostatic pressure in the source than in the sink – tension created ...
Types of Vegetative Reproduction
... • Red is highly visible to birds, though insects cannot see it, so birds will be very attracted to a red plant that insects will bypass. It is also seen in red fruits dispersed by birds • Bats, rodents and monkeys also help disperse pollen ...
... • Red is highly visible to birds, though insects cannot see it, so birds will be very attracted to a red plant that insects will bypass. It is also seen in red fruits dispersed by birds • Bats, rodents and monkeys also help disperse pollen ...
Plants - Warren County Schools
... Transpiration is the loss of water through its leaves Plants keep their stomata open just enough to allow photosynthesis to take place but not so much that they lose an excessive amount of water ...
... Transpiration is the loss of water through its leaves Plants keep their stomata open just enough to allow photosynthesis to take place but not so much that they lose an excessive amount of water ...
The first seedless vascular plants ______.
... of, and is nourished by, the diploid sporophyte male gametophytes produce pollen grains which are transferred to the female gametophytes by insects the diploid sporophyte grows out of the haploid gametophyte, and then produces haploid spores by meiosis adaptations to land make it possible for fertil ...
... of, and is nourished by, the diploid sporophyte male gametophytes produce pollen grains which are transferred to the female gametophytes by insects the diploid sporophyte grows out of the haploid gametophyte, and then produces haploid spores by meiosis adaptations to land make it possible for fertil ...
Structures and Life Processes of Plants Seed Plants Plant
... covered by the soil, it remains inactive until the right conditions are present for it to germinate. Germination is the development of a seed into a new plant. ...
... covered by the soil, it remains inactive until the right conditions are present for it to germinate. Germination is the development of a seed into a new plant. ...
Gr. 4 Big Idea 16-Flowering Plant Reproduction and Life
... Pollination is the act of transferring pollen grains from the male anther of the stamen to the female stigma. Pollen lands on a female pistil, sperm cells move down to the ovary, fertilizing the egg cells. Fertilization combines DNA. The result is a seed with a tiny plant inside. The ovary g ...
... Pollination is the act of transferring pollen grains from the male anther of the stamen to the female stigma. Pollen lands on a female pistil, sperm cells move down to the ovary, fertilizing the egg cells. Fertilization combines DNA. The result is a seed with a tiny plant inside. The ovary g ...
Plant Classification
... • ‘naked seeds’ – not protected or enclosed in an ovary. •seeds are plant embryos packaged in a protective coat along with a food supply. ...
... • ‘naked seeds’ – not protected or enclosed in an ovary. •seeds are plant embryos packaged in a protective coat along with a food supply. ...
Inquiry into Life, Eleventh Edition
... Sexual reproduction in flowering plants cont’d. • Overview of plant life cycle – Flower- reproductive structure of angiosperms – The diploid sporophyte is the predominant stage • The sporophyte bears flowers; flowers produce 2 spore types – Megaspore-develops into female gametophyte-embryo sac – Mi ...
... Sexual reproduction in flowering plants cont’d. • Overview of plant life cycle – Flower- reproductive structure of angiosperms – The diploid sporophyte is the predominant stage • The sporophyte bears flowers; flowers produce 2 spore types – Megaspore-develops into female gametophyte-embryo sac – Mi ...
Alternation of generations
... to have much the same level of organisation they do in fact have very different evolutionary histories. It was long known that their storage products and chlorophyll types differed, but it has only recently been shown from studies of DNA sequences that the date at which they split into the three col ...
... to have much the same level of organisation they do in fact have very different evolutionary histories. It was long known that their storage products and chlorophyll types differed, but it has only recently been shown from studies of DNA sequences that the date at which they split into the three col ...
Roots
... Coevolution Flowering plants coevolved with pollination vectors that transfer pollen from stamens to carpels of flowers of the same species • Pollinators receive nectar and pollen ...
... Coevolution Flowering plants coevolved with pollination vectors that transfer pollen from stamens to carpels of flowers of the same species • Pollinators receive nectar and pollen ...
SURVIVAL
... The male sex organs are made up from the Penis, Testes and Scrotum. The Testes make Sperm which contain the male genes. The Penis places the sperm as near as it can to the female’s egg ( Ovum ) The female sex organs are made up from the Ovaries, Vagina, Uterus and Oviduct. The ovaries make the Ovum ...
... The male sex organs are made up from the Penis, Testes and Scrotum. The Testes make Sperm which contain the male genes. The Penis places the sperm as near as it can to the female’s egg ( Ovum ) The female sex organs are made up from the Ovaries, Vagina, Uterus and Oviduct. The ovaries make the Ovum ...
Plants - Home - Dr B M Salameh
... • Unlike bryophytes: – Sporophyte is free-living and has vascular tissues ...
... • Unlike bryophytes: – Sporophyte is free-living and has vascular tissues ...
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.