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- Under which of the following conditions would pollen from an S2S5 plant successfully pollinate an S1S5 flower? a. Using pollen from a carpelate flower to fertilize a staminate flower would be successful. b. If the plants used gametophytic self-incompatibility, half of the pollen would be successful. c. If the plants used sporophytic self-incompatibility, half of the pollen would be successful. d. Pollen from an S2S5 plant can never pollinate an S1S5 flower.What is a feasible explanation why there is lesser percentage of germination and growth rate in monggo seeds when sprinkled with water added with 3/4 teaspoon as compared to monggo seed set-ups sprinkled with water?A student investigated the effect of plant growth substances (IAA and GA) on the elongation of pea stems, the students marked a 10mm length of stem on each of four plants and applied growth substances to the stem. Figure 2 shows a graph of the student's results. 16- 14- 12- 10 10 20 40 IAA and GA 'IAA GA control 30 Time (h) a) Describe the effects on growth of the stem for the 2 growth substances applied separately. (4) 50 60
- Please answer the following questions for me: 1 Why is it important to determine whether or not genes that provides insecticide and fungi resistance may be transferred to wild sunflowers? 2. What factors would you measure (response, or dependent varibles)? 3. Fitness can be measured as a seed set (seed production) Why is it important to measure as seed production? 4. Cultivated sunflowers have one stem that produces one single large flower head, while wild flowers have many branches that produce many flowers. Why is it important to measure branching pattern (number of branches produced by F1 plants, backcrosses and wild type sunflowers? 5. Why is it important to include blackcrosses in the exeriment?1) Does the three t-tests support the hypothesis: of manipulating light exposure will influence the flowering time of Brassica rapa plants by using light from the sun and using incandescent bulbs, or not? If it did not support the hypothesis, then what changes would you make? 2) Do these three t-tests have different growth rates? 3) Is there anything to learn about this study of the graphs and t-tests?Wild type, winter annual accessions of Arabidopsis will flower after 20 days at 23C in long day conditions (critical photoperiod 15 hours) following 30 days at 4C. What is the predicted flowering- time response of each experimental plant's genotype (listed below) relative to a wild-type winter annual accession when both are grown from seed under the following experimental conditions? The possible flowering time responses are: EARLY, LATE, SAME relative to a wild-type winter annual grown under the environmental conditions listed below.
- 1) Answer the following with regards to tree above: a. If you were to put 5594 yeast on the tree above, what tick mark would you use to differentiate it from wild type yeast? Draw the branch and the tick on the tree. b. Put legumes (like beans) and iris on this tree. c. On the tree above, add tick marks for: A. vascular bundles in a ring within the stems B. nodulation4. A student investigated the effect of plant growth substances (IAA and GA) on the elongation of pea stems, the students marked a 10mm length of stem on each of four plants and applied growth substances to the stem. Figure 2 shows a graph of the student's results. Length of stem section (mm) 161 14- 12- 10+ 0 Describe b) c) Suggest a suite 10 ************ 20 30 Time (h) 40 IAA and GA IAA GA control 50 60 minem & wth of the co crease in length of 4.9mm. The movime after application of growth substances was 4.2min. Calculate the percentage mereas (2) treatment for the control (2 d) Suggest how the student could have improved their investigation (5) sepere *********** ************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
- A. What is double fertilization? B. What are the products of double fertilization? C. Explain the following quote “As an individual, the endosperm is unique as it has three ancestors and never leaves any descendants.” What are the three ancestors referred to in this quote? And why endosperm does not leave any descendants?Wild type, rapid-cycling accessions of Arabidopsis, such as the Columbia (COL) lab line will flower 32 days after germination under long day conditions (with a critical photoperiod of 15 hours). What is the predicted flowering-time response (EARLY, LATE, SAME) of each experimental plant's genotype (Listed below) relative to the wild-type, rapid-cycling COL line - when both are grown from seed under the following environmental conditions. The possible flowering time responses are: EARLY, LATE, SAME., relative to the wild-type COL line grown in the conditions listed below.Can you answer all the parts to this question please (a) What are the advantages of the self-incompatibility (SI) system in plants? Give at least three advantages. (b) What are the differences between gametophytic SI and sporophytic SI?