Match the description with the appropriate term. Where more than one.pdf

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Match the description with the appropriate term. Where more than one answer may be correct, choose the best answer (most specific answer, if appropriate, or most general correct answer if the description can refer to multiple terms): A. An egg A gametophyte A sporophyte An archegonium An antheridium A gametangium A sporangium A spore 1. A diploid plant (a multicellular, diploid organism or individual) 2. A haploid plant (a multicellular, diploid organism or individual) 3. A plant that produces spores 4. A plant that produces gametes 5. An organ or structure on a gametophyte in which gametes are produced 6. An organ or structure on a gametophyte in which eggs are produced 7. An organ or structure on a gametophyte in which sperm are produced 8. A single cell that, if fertilized, becomes a zygote 9. The multicellular structure in which a zygote forms in land plants 10. The structure in land plants in which an embryo begins to grow 11. An organ or structure on a plant in which meiosis occurs 12. An organ or structure on a plant in which spores are produced 13. A single haploid plant cell that has sporopollenin in its wall 14. A single haploid cell that divides to form a gametophyte An eggB. A gametophyteC. A sporophyteD. An archegoniumE. An antheridiumF. A gametangiumG. A sporangiumH. A spore Solution Sporophyte (2n): Diploid, multicellular form of a plant. It forms haploid spores through meiosis. Gametophyte (n): Haploid, multicellular form of a plant. It forms gametes through mitosis. 1. ANS: A sporophyte (It is in diploid, but its spores are haploid). 2. ANS: A gametophyte 3. ANS: A sporophyte 4. ANS: A gametophyte 5. ANS: A gametangium 6. ANS: An archegonium 7. ANS: antheridium 8. ANS: antheridium 9. ANS: gametophyte 10. ANS: Egg (After fertilization it divides and forms embryo). 11. ANS: A sporophyte (in spores it occur) 12. ANS: A sporangium (spores are produced when sporangium splits). 13. ANS: Spores (Spores are covered by a polymer called sporopollenin). 14. ANS: Spore (Through mitosis spores can produce gametes)..

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Solution
Sporophyte (2n): Diploid, multicellular form of a plant. It forms haploid spores through meiosis.
Gametophyte (n): Haploid, multicellular form of a plant. It forms gametes through mitosis.
1. ANS: A sporophyte (It is in diploid, but its spores are haploid).
2. ANS: A gametophyte
3. ANS: A sporophyte
4. ANS: A gametophyte
5. ANS: A gametangium
6. ANS: An archegonium
7. ANS: antheridium
8. ANS: antheridium
9. ANS: gametophyte
10. ANS: Egg (After fertilization it divides and forms embryo).
11. ANS: A sporophyte (in spores it occur)
12. ANS: A sporangium (spores are produced when sporangium splits).
13. ANS: Spores (Spores are covered by a polymer called sporopollenin).
14. ANS: Spore (Through mitosis spores can produce gametes).

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Question 12 (5 points) The reason that mitosis can result in the production of haploid gametes in alternation of generations is because Question 12 options: The sporophyte and gametophyte are both haploid Eggs and sperm are produced directly by the diploid sporophyte via meiosis Eggs and sperm are produced by the diploid gametophyte via mitosis Eggs and sperm are produced by the haploid gametophyte via mitosis Save Question 13 (5 points) In the fern life cycle, how does fertilization occur? Question 13 options: The sporangia on the undersides of the leaves produce gametes, which are flung our of the leaf and find each other on the ground to fuse The sporophyte produces sperm and eggs in gametangia. The sperm reach the eggs by swimming through water The gametophyte produces sperm and eggs in gametangia (antheridia and archegonia). The sperm reach the eggs by swimming through water There is no sexual reproduction in ferns Save Question 14 (5 points) The earliest land plants were most likely to have lived in which of the following habitats? Question 14 options: arid desert environments Salt water marshes Tropical rainforests fresh water wetlands Save The sporophyte and gametophyte are both haploid Eggs and sperm are produced directly by the diploid sporophyte via meiosis Eggs and sperm are produced by the diploid gametophyte via mitosis Eggs and sperm are produced by the haploid gametophyte via mitosis Solution Q12 Eggs and sperms are produced by haploid gametophyte by mitosis. The large, leafy fern is the diploid organism. On the undersurface of its fronds or leaves, its cells undergo meiosis to create haploid cells. However, these cells do not immediately unite with others to recreate the diploid state. Instead, they are shed as spores and germinate into small haploid organisms. Because the diploid organism creates spores, it is called the sporophyte generation of the life cycle. Upon reaching maturity, the haploid organism creates haploid egg and sperm cells (gametes) by mitosis . Because the haploid organism creates gametes , it is called the gametophyte generation of the life cycle. The male gametes (sperm) are then released and swim to the female egg. Fusion of the gametes creates the new diploid sporophyte, completing the life cycle. Q13 The gametophyte produces sperm and eggs in gametangia (antheridia and archegonia). The sperm reach the eggs by swimming through water The male organs or antheridia produce and shed numerous motile sperm or antherozoids. These antherozoids are armed with hair-like or whip-like cilia or flagellae and are able to swim through water; they do not travel great distances and are only released when free water is available. Only a continuous film of water is needed. They antherozoids are chemically attracted to the developing flask-like female organs or archegonia where fertilization of the single egg cell embedded in each archegonium takes place. The sporophyte has a double set of chromosomes (i.e. diploid) and i.

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A protein that was isolated by a team of university scien4sts is suspected to be expressed on a yet to be iden4fied lymphocyte. With your group partners – outline a series of experiments that you would design to iden4fy the cells expressing the protein. Solution Most of the genes expressed as proteins and proteins involved in cell function. Lymphocytes are the part of leucocyte present in the lymphatic system.They are some experiments to identify the cells expressing the protein.They are differential protein expression using 2-d gel electrophoresis and by gene expression profiling, serial analysis of gene expression..

A protein that was isolated by a team of university scien4sts is sus.pdf

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A laser beam strikes one end of a slab of material of length L = 42.0 cm and thickness t=3.10 mm. Itenters the material at the center striking it at an angle of incidence of 50.0 degrees. The index of refraction of the slab is n = 1.48. How many internal reflections the light makes from the top and bottom of the slab before exiting at the other end. Solution As the beam enters the slab n1*sin A1 = n2*sin A2 1*sin 50 = 1.48*sin A2 A2 = arcsin(sin 50/1.48) = 31.2 deg the beam then stirkes at the top of slab at x1 x1 = 1.55*10^-3/tan 31.2 = 2.56*10^-3 m (from the left end) After that the beam strike at slab each time it has traveled a distance of 2x1 Since the slab is 42 cm long, total distance to travel after first reflection = 42 cm - x1 (42 cm - x1)/2x1 = (42*10^-2 - 2.56*10^-3)/(2*2.56*10^-3) = 81.53 reflections Since the number of reflection will be integer, So total number of reflections will be 82..

A laser beam strikes one end of a slab of material of length L = 42..pdf

armcomputers

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