walls of some tissues‚ providing structure for plants to grow upright and space for vascular tissue. • Reproducing on land: A pollen grain is a two-celled structure produced by seed plants that contains a cell that will divide to form sperm. Pollen can be carried by wind or animals to female reproductive structures. A seed is a storage device that also protects and nourishes a plant embryo. Plants evolve with other organisms in their environment. • A mutualism is an interaction between two species
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Chapter Learning Objectives Chapter 30: Plant Diversity II: The Evolution of Seed Plants Concept 30.1: Seeds and pollen grains are key adaptations for life on land • Name five terrestrial adaptations that contributed to the success of seed plants. 1) Seed 2) Reduction of gametophyte generation (dominant is sporophyte) -tiny gametophytes can develop in sporangia of the parental sporophytes which protect them from UV and from drying out 3) Heterospory (mega and micro) -mega- female‚ part
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The Exotic Rambutan Fruit The Rambutan fruit is native to Malay Archipelago‚ Southeast Asia. It is botanically named a Nephelium lappeleum. To people of Malaysia‚ Thailand‚ the Philippines‚ Vietnam‚ Borneo‚ and other countries of this region‚ the Rambuton is a comparatively common fruit like an apple which is common to many people in cooler‚ climate. The Rambutan is naturally red in color but they sometimes seem yellow orange. ‘Rambut’ is a malay word which means “hair”‚ therefore‚ it got its
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SST 242: PRINCIPLES OF SEED PRODUCTION Lecture Two Title: Vegetative Propagation Introduction Man has propagated plant material almost as long as he has cultivated the land to produce food. For a long time‚ plant material was propagated mainly by using the seeds of existing plants. Better methods were discovered over time‚ methods that allowed the farmer to retain the desirable qualities of the plant material‚ while eliminating some of the less desirable qualities. Through these methods‚ the
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Choice Questions Choose the correct answers from the following: 1. _________ described the circulation of blood in 13th century. (Bu Ali Sina‚ Ali Bin Isa‚ Ibn-Al Nafees) 2. Each fore limb of frog has _________ fingers. (4‚ 5‚ 6) 3. Fruit is formed by the enlargement of _________. (Stigma‚ Style‚ Ovary) 4. The earthworm belongs to the phylum _________. (Nematoda‚ Annelida‚ Mollusca) 5. The saliva contains an enzyme known as _________‚ which acts on carbohydrates. (Lipase
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Growth Growth and development are the most fundamental characteristics of all living organisms. The physiological definition of growth is “An irreversible change in the organism‚ organ or cell is called growth”‚ which includes increase in mass weight or volume of living organism‚ it leads to development in plants. REGION OF GROWTH: Growth region is located at extreme apices of root‚ stem‚ leaf where we make out meristematic tissue. In addition to above‚ the region where intercalary and lateral
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a significant role in providing food and shelter for animals and other organisms. There are over 250‚000 species of flowering plants and they are all vascular seed plants that have flowers and fruits. Angiosperms derive their name from the Greek words angion (vessel) and sperma (seed). The flower contains the vessel that houses the seed. It is also the organ for sexual reproduction. A typical flower is composed of modified leaves arranged in four whorls (circles) on the end of an enlarged portion
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does not involve the union of gametes. | |two parents. | | |2. New plants are produced from seeds. |2. New individual is produced from a single parent. | Q3. Differentiate between binary fusion and budding. Draw a well-labeled diagram showing both. |Binary Fusion
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sporangium. Nature had to evolve protection for the gametophytes‚ and it came up with an embryo inside the ovary‚ carpel‚ or pistil. The seed also evolved a hardened protective covering to aid in reproduction. Seed became carried in fruits‚ which were eaten by animals that dispersed the seeds and aided in reproduction. In addition‚ seed dormancy allows the seed to remain latent for extended periods of time. Lastly‚ the evolution of internal fertilization using the pollen tube and endosperm helped
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afford to go to school‚ because of their status in life. But the greatest treasure that can be achieved is education. Through education‚ one person’s knowledge can be enhanced. It’s like a seed on a fertile soil‚ that if the seed received enough sunlight‚ water and air it will grow to a big tree that can give fresh fruits and shelter with clean air. In education‚ if you are willing to study in school‚ doing your homework‚ projects and reading some smart stuff‚ it will give knowledge to you and will bring
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