Guide Questions: 2. How about the seed with the rough texture? 1. Which seed/seeds in the table have smooth texture? 3. Which seed seems to be round or oblong in shape? 4. What's the color of each kind of seed in the experiment? 5. Describe the sizes of each kind of seed. 6. Which seed/s germinated first? germinated last? 7. What kind of seed coat do they have? 8. Do you think the thickness of seed coat affects germination? How? 9. After germination, which seedlings or germinated seeds are monocot? dicot?
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nonsense report
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Answer:
1. Rajma seeds have a smooth texture and belong to the family Fabaceae.
2. A matrix diagram is defined as a new management planning tool used for analyzing and displaying the relationship between data sets. The matrix diagram shows the relationship between two, three, or four groups of information.
3. The seed is rounded at both ends, or egg shaped (i.e. ovate or obovate, broader at one end). Rounded, symmetrical about the middle or broader below the middle or broader above the middle.
4. Six seed colour categories: 1 = yellow; 2 = dark yellow; 3 = brown-yellow; 4 = light brown; 5 = brown; 6 = black. Mean seed size from all samples approximately 2 mm.
5. Mechanism. Modern seed sizes range from 0.0001 mg in orchid seeds to 42 kg in double coconuts. Larger seeds have larger quantities of metabolic reserves in their embryo and endosperm available for the seedling than smaller seeds, and often aid establishment under low resource availability.
6. Active growth in the embryo, other than swelling resulting from imbibition, usually begins with the emergence of the primary root, known as the radicle, from the seed, although in some species (e.g., the coconut) the shoot, or plumele emerges first.
7. Depending on its development, the seed coat is either bitegmic or unitegmic. Bitegmic seeds form a testa from the outer integument and a tegmen from the inner integument while unitegmic seeds have only one integument. Usually, parts of the testa or tegmen form a hard protective mechanical layer.
8. Seed coating thickness was the determining factor. With a share of the seed coat of 75% of the total grain (seed + seed coat) germination was very little affected by coating. However, smaller seed coat shares and particularly shares smaller than 50% of the total grain severely reduced germination rate.
9. When grass seeds — like corn (maize) or oats (shown here) — germinate, the primary root pierces the seed (and fruit) coverings and grows down; the primary leaf of the plant grows up. It is protected as it pushes up through the soil by the coleoptile — a hollow, cylindrical structure.
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