Seeds - Advanced Honor

Nature Study

Requirements

1. Have the Seeds honor.

   Answer: You must present to the instructor the duly signed card for the Seeds (basic) honor as a prerequisite to starting Seeds Advanced, proving that the basic concepts (seed structure, germination, basic identification, and collection) have already been studied previously, as required by the official Adventist Pathfinder program today. — The basic honor forms the foundation — without knowing the basic structure and germination, the advanced one (germination tests, monocotyledon vs dicotyledon, spores vs seeds) becomes difficult. The card is the official document of the Pathfinder program that proves prior completion of the prerequisite honor.

2. Identify from drawings, and know the purpose of, each of the following parts of a seed: endosperm, radicle, plumule, micropyle.

   Answer: 1) Endosperm — nutritive tissue that stores reserves (starch, oils, proteins) to feed the embryo during germination; 2) Radicle — the lower part of the embryo that gives rise to the root; it is the first structure to break through the seed during germination, anchoring the plant and absorbing water; 3) Plumule — the upper part of the embryo that gives rise to the stem and the first leaves (the aerial part of the new plant); 4) Micropyle — a small opening in the seed coat through which water enters to begin germination and through which, during fertilization, the pollen tube had penetrated. — Endosperm is abundant in monocotyledons (corn, wheat) and almost absent in dicotyledons (which store reserves in the cotyledons — beans, soy). The micropyle is the pollen tube's original path into the ovule, becoming the entry point for water. The radicle is positively geotropic (grows downward); the plumule is negatively geotropic (grows upward). Knowing these parts is the foundation of botany applied to agriculture worldwide.

3. Know several differences between the monocotyledon and the dicotyledon seed.

   Answer: Several differences between monocotyledons and dicotyledons: 1) Cotyledons — mono has 1 (corn, wheat, rice, grass), di has 2 (beans, soy, peas); 2) Reserves — mono generally keeps the endosperm as a reserve, di usually stores them in the cotyledons themselves; 3) Root — mono has a fibrous root (tuft-like), di has an axial/taproot (one main root); 4) Leaf veins — mono have parallel veins, di have reticulate (net-like) veins; 5) Flowers — mono have floral parts in multiples of 3, di in multiples of 4 or 5; 6) Vascular bundles of the stem — mono scattered, di arranged in a circle; 7) Germination — mono generally hypogeal, di often epigeal. — About 25% of angiosperms are monocotyledons — they include most cereals (rice, wheat, corn), fruits (banana, pineapple), and grasses. The remaining 75% are dicotyledons (beans, potato, coffee, apple). Differences appear from the seed all the way to the adult — the number of petals (mono = multiple of 3, di = multiple of 4 or 5) is another common distinction in flowers.

4. Explain the purposes and uses of an apparatus for testing seeds. Test the germination of 100 seeds of a wild plant and 100 seeds of a domestic plant. Report the results of each test.

   Answer: You must show the instructor that the apparatus (germinator) serves to test the viability and germination rate of seeds under controlled conditions (humidity, temperature, light). Also present the practical test: 100 wild seeds (e.g., grass, nettle, beggarticks) and 100 domestic seeds (e.g., beans, lettuce, corn) in a homemade germinator (a box with moist cotton or filter paper), for 7-14 days, counting germinated vs not germinated. — Domestic seeds usually have a germination rate above 80% (genetically selected); wild ones range between 30-70% (natural variability). A professional germinator controls 25°C and 80% humidity. At home, a box with cotton is enough. Brazil has a MAPA (Ministry of Agriculture) regulation for commercial seeds — it requires ≥80% for sale. Testing is a critical practice before planting an entire crop.

5. What is the difference between a seed and a spore?

   Answer: You must show the instructor that a seed is a complex multicellular reproductive structure, produced by flowering plants and by gymnosperms (pines), with an embryo + reserves + seed coat — it directly generates a new plant; whereas a spore is a single reproductive cell, without large reserves or an embryo, produced by mosses, ferns, fungi, and bacteria — it needs to germinate under ideal conditions to generate a gametophyte (an intermediate stage) that then produces the plant. — Seeds evolved from spores about 360 million years ago. Spores were the strategy of the first land plants (mosses); seeds came with gymnosperms and angiosperms. Each mushroom releases millions of spores. The coconut is an extreme example of a seed (reaching up to 2 kg). Spores can remain dormant for decades; seeds generally lose viability in 1-10 years.

6. Have in your collection 4 types of seeds for each of 2 plant families of your choice, demonstrating the similarity among the seeds of plants of the same family.

   Answer: You must present to the instructor a collection of 8 types of seeds (4 + 4) from 2 different families, with each one identified and a visual demonstration of the similarity among seeds of the same family. Example: Family Fabaceae/Legumes — beans, soy, peas, lentils (oval seeds, large cotyledons). — Botanical families group plants with common characteristics (including seeds). Fabaceae fixes nitrogen in the soil; Cucurbitaceae produces large, fleshy fruits. Plants of the same family have similar seeds because they share evolutionary ancestry. Other useful families for a collection: Brassicaceae (kale, mustard, broccoli), Solanaceae (tomato, bell pepper, potato), Poaceae/Gramineae (corn, rice, wheat, grass).

7. Write or present orally 2 lessons we can learn from seeds. You can find the information you are looking for in the book Christ's Object Lessons, pages 33 to 89.

   Answer: 2 spiritual lessons from seeds (based on 'Christ's Object Lessons', E. G. White, pp. 33-89): 1) The seed seems small and dead, but it holds life that manifests itself with time, water, and soil — so it is with the Word of God in the heart: though it may seem fragile, it generates abundant life when it is nurtured; 2) The seed only bears fruit after it dies and is buried — so the Christian must die to self (surrender their own will) so that Christ may grow in them and produce fruit; and the growth is gradual and silent, first the blade, then the ear, then the grain (Mark 4:28), recalling that spiritual development requires patience and constant care. — The book 'Christ's Object Lessons' (1900) by Ellen White comments on the parables of the Gospels. Pages 33-89 cover 'The Sower' and 'The Seed Growing Secretly' (Matthew 13, Mark 4). Central lessons: patience (the seed grows in God's time), receptivity of the soil (a heart that receives the Word), death and life (a Christian principle), and faith (believing in what one does not yet see). A rich spiritual application.

8. Make a collection of 60 types of seeds, 45 of which you have found yourself. Classify each one with the name, date, and place where it was found, and the name of the person who found it. The seeds may be glued onto card stock or placed in transparent containers.

   Answer: You must present to the instructor a complete collection of 60 types of seeds (with 45 found by you in the field), organized on card stock with transparent glue or in labeled containers. Each sample must have a label with: the common and scientific name of the plant, the date of collection, the exact location (city, park, farm), and the name of the collector. — A collection of 60 seeds is a months-long task — it requires walks in parks, gardens, farms, and flowerbeds. In transparent containers, it lasts for years without deteriorating. Labeling well is vital for later identification. Seeds found by you teach local ecology. Bought seeds (45 vs 15) ensure practical depth. Botanical collections are a tradition in schools, and they help the student develop a naturalist's eye for good.