Jindal Public School Assignment-Chapter-2 Sexual Reproduction in Flowering Plants Biology Class XII 1. What is meant by monosporic development of a female gametophyte? 2. Name the part of flower that contributes to fruit formation in strawberry and Guava respectively 3. With a neat diagram explain the 7-celled‚ 8-nucleate nature of the female gametophyte. 4. Why is it necessary to emasculate a bisexual flower in a plant breeding programme? How it is done? Mention the condition under which emasculation
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fertilization in flowering plants‚ one sperm cell fuses with an egg cell to form a zygote and a second sperm fuses with two polar nuclei to form _____________. Correct B ) endosperm he process by which one of the two sperm nuclei fuses with the egg nucleus to produce a diploid zygote and the other fuses with the polar nuclei to produce a triploid endosperm the transfer of pollen grains from an anther to the stigma of the same flower or to the stigma of another flower on the same plant
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The Affect of Different Colored Light on Plant Growth Puprose: Just as we are happier and healthier when we receive adequate sunlight‚ so are the plants and vegetation that we grow. Sunlight‚ or other means of artificial lighting is essential to help a plant grow into maturity. It is also necessary in aiding the plant to get the nutrients it requires to mature into a strong healthy plant. The process of the sun or other light helping to feed the plant is called photosynthesis. The light acts
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-How plants get liquid and minerals- Flowers absorb liquid through their roots‚ which are attached to xylem vessels. Xylem vessels are tubes that can expand through several feet of tissue and be .7mm in diameter. Their walls are thickened with cellulose deposits. Xylem bring water up to the leaves and petals of the plant. Even without contact with the roots‚ the xylem can still absorb water. Because of this‚ a cut flower usually doesn’t die for a couple days (as long as it is placed in water of
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Amount of Water Effects Plant Growth By Dennis Marchuk Turner Ashby High School Grade 10 March 23‚ 2013 The purpose of this project was to determine how much the amount of water effected plant growth. This had been accomplished by taking three groups of plants and placing them next to one another. Each group contains two plants. Each one would be watered with a different amount of water. They would then be measured how much they grew. The growth of the three plants was compared. Hypothesis:
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Experiment 6- The Pathways of Plant Water Movement Aim: To investigate the movement of materials in xylem Materials: Fresh celery stalk with leaves Eosin solution (1%) A plastic container with tap water A sharp scalpel Hand lens A light microscope Two glass slides A cover slip Risk Assessment and Safety Precautions: Risk Assessment Safety Precautions Eosin solution- can cause stains Always use gloves when handling Scalpel is dangerous and can cause cuts Always handle
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Fig. ( 1 ): Symptoms of an infected onion plants with IYSV in a commercial onion field and greenhouse . Fig. ( 1 -A‚B‚C‚D ) : IYSV Symptoms development in the field showing chlorotic‚ elongate ringed lesions on leaves and tip dieback (A) ‚ Straw-colored‚ lenticular or spindle -shaped lesions (B )‚ chlorotic‚ spindle-shaped lesions on onion leaf and spindle to diamond shaped lesions on the flower scapes (C‚D) . symptoms of IYSV in the greenhouse transmitted with virulifierous Thrips tabaci showing
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Botany Essay Questions 1. Pollination is a crucial process of how plants reproduce‚ in which the male sex cell of the flower‚ pollen‚ is transferred from the stamen to the carpel‚ or more specifically‚ from the anther to the stigma. Pollen grains are completely different and unique for each flower‚ they carry the male and female genetic information and it is split exactly 50/50. The transfer is carried out by pollinators‚ which include bees‚ wasps‚ flies‚ butterflies‚ moths‚ several species
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Animal and Plant cells consist of most of the same cell types‚ but the whole shape of the cell is quite different. An animal cell is a round‚ uneven shape‚ whereas the Plant cell has an affixed shape. They have a more of a rectangular shape. Chloroplast‚ Vacuole and the Cell wall are only found in Plant cells. The Chloroplast is the organelle for the whole system of Photosynthesis. Chloroplasts are found in mesophyll cells (which are found in the leaves) of green plants. They convert light into
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Plants That Can Move Inspire New Adaptive Structures http://www.usnews.com/science/articles/2011/02/23/plants-that-can-move-inspire-new-adaptive-structures Summary: Researchers at the University of Michigan and Penn State University have been studying a species of shape-changing plant that they believe can help them develop a new breed of structures that can twist‚ turn‚ bend‚ stiffen‚ and otherwise adapt to their environments. The Mimosa plant‚ which folds its leaves on contact through a phenomenon
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