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- In most parts of the world, commercial potato crops are producedasexually by planting tubers. However, in some regions, such asSoutheast Asia and the Andes, some potatoes are grown from trueseeds. Discuss the advantages and disadvantages of growingpotatoes from true seeds.A seedling germinating under a stone grows at an angle away from the stone and upward. This response to touch is called.______ gravitropism thigmonasty thigmotropism skototropismIn flowrers, the structures that produce male gametophytes are called ______; the structures that produce female gametophytes are called _______. a. carpels; stamens b. pollen grains; flowers c. anthers; carpels d. megaspores; microspores
- 3. Figure 3 shows the development of the embryo sac in a plant. Rajah 3 menunjukkan perkembangan kantung embrio dalam tumbuhan. Megaspore mother cell Sel induk U megaspora V Stage W Stage X Figure 3 Rajah 3 > >A cyme inflorescence structure is caused because the homolog of TFL1 is not expressed in the meristem. O True FalseIDENTIFICATION. identily the folowing statements with a conect arewer. 1. Plants trat produce seeds enclosed in an ovary that eventually develops into seeds. 2ba nonvascular plont that grows ciose to the ground. 3. Plants that bear naked seeds A Hiratype of anthophytes plant with two seean leat in ther seedi. S. Plants that produce fower as their means of reproduction 6. It is the capocity to do work. 7. the most abundant gas in earth's atmosphere. 8. The second most abundant gas in earth's atmosphere. 9, tis the loss of the soils blological productivity due to poor Agricultural practices and industrialzation. 10.it pertains to the roie the organtms play in their respective habitats. MATCHING TYPE. Match the following terms in column with their conesponding defiritions in column A. Write the letter of your answer on the space provided Column A. Rectum Column A 11. largest organ in the body 12. a pear-shaped organ 13. a long coled tube that tils the abdomen 14. the exll point for fecal…
- All of the following leaf types could be found in seed plants EXCEPT: O glochids O needles O fronds O sheathing MacBook Pro Q Search or enter address #3 $ & 3 4 5 6.Only a few hundred of the more than 200,000 speciesof plants have been domesticated for human use. Oneexample is the almond. The domestic almond is nutritiousand harmless, but its wild precursor can cause cyanidepoisoning. The oak makes potentially nutritious seeds(acorns) that contain very bitter-tasting tannins. Ifwe could breed the tannin out of acorns, they mightbecome a delicacy. Why do you suppose we have failed todomesticate oaks?VOLTE1¹67 3:41fb. : +91 97532 46070 21 जुलाई, शाम 5:38 → Class XII 1. Draw a 2. Explain 7. Seed (B) Fruit Jawahar Navodaya labelled Subject: Biology laya Vidyalaya Buranabad ujjain -2 diagram of Embryo Insects. sac 2and microsporagium. Megasporogeneris. Pollen grains Embryo Development. by Pollination. 3. Draw a labelled diagram of female reproductory system. 4. List hormones of pregnancy and their role. 5. Project Report (Topic given) 6. Make a Chart / Model from any, subject or topic. from Chapter 2 and 3. on Do survey diffcunt pollinating Agent within your Economic valuu. ⇓ C. 4. O ט
- А D If the auxin concentration in A is 46 units and the auxin concentration in B is 33 units then the auxin concentration is C is unitsPollen grains are derived from a microsporocyte, developed inside the microsporangia of an anther, and are supposed to contain 2 sperm cells and a tube nucleus. O True False15. The sticky cinquefoil (Potentilla glandulosa) is a small, deciduous plant with bright yellow flowers that lives throughout the American West, and its leaf phenotype can vary depending on environmental conditions. Inland, where there are dramatic seasonal temperature swings and unpredictable droughts, plants shed their large “summer leaves” in autumn when the temperature begins to drop. In the spring new leaves are smaller and develop in a compact rosette. This phenotype persists for several months and is thought to be an adaptation that makes the plants drought-resistant (because less water evaporates from reduced leaf surfaces). By contrast, the leaves of P. glandulosa plants growing in a coastal climate are always large. In their habitat, seasonal temperature swings are not as great and the annual cycle of winter rain and summer drought is highly predictable. Suppose you decide to explore the hypothesis that the coastal population is genetically capable of exhibiting the same seasonal shift in leaf morphology as the inland plants. Would you need access to a greenhouse where you can control variables, or would it be just as easy to do experiments in the wild? Explain your reasoning and outline your experimental design—including the variable or variables you will test in the first experiment.