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Virat
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In the lower Himalayan region of northern India, apples are an important cash crop that contribute significantly to farmer’s livelihoods. The fruit yield in apple cultivation is declining continuously, associated with climate change and a significant decline in the population of natural pollinators. A researcher-farmer group set up two experimental apple orchards at two distinct locations: Places A and B. In apple orchards at Place A, they allowed natural pollinators to pollinate the flowers of the apple. In apple orchards at Place B, they applied mixed farming techniques of beekeeping. Along with honey, the farmer yielded apples. The yield of apples is depicted in Fig. 11.24, in terms of fruit setting (number of fruits/the total number of corresponding fruit-bearing branches) and fruit drop (premature falling of developing fruits) in the two types of experimental places of apple orchards. (i) What are the hypotheses the researcher-farmers group has thought of for this investigation? (ii) What are the different parameters in the experiment? (iii) Compare and analyse the data of two experimental orchards Places A and B, in terms of high yields of apple fruits. (iv) Based on your analysis, what do you infer from the data?

Managed bee colonies increase apple fruit setting and drastically minimize premature fruit drop compared to relying solely on natural pollination, significantly boosting overall apple orchard productivity and farm income. CBSE Class 9 Science Chapter 11 Reproduction How Life Continues Solutions NCERT ...

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Virat
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Tomato and wheat undergo self-pollination because anthers enclose the stigma or flowers remain closed until pollination completes. Papaya strictly exhibits cross-pollination because male and female flowers grow on separate trees. Chapter 11 Reproduction How Life Continues Solutions Class 9 Science Reproduction ...

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Virat
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The set-up tests how differing sugar concentrations affect pollen germination rate and pollen tube length, while keeping temperature, plant species, solution volume and incubation duration strictly constant across slides. Class 9 Science Exploration New Book All Chapter Solution Revise, Reflect, Refine ...

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Kriti
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The correct option is (ii). A mechanical wave fundamentally requires a material medium to propagate, which is confirmed by the vacuum bell jar experiment where sound cannot travel in a vacuum. Class 9 Science Chapter 10 Sound Waves Characteristics and Applications ...

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Kriti
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Night-blooming flowers rely on nocturnal pollinators like moths and bats that navigate in dim darkness, making bright, light-colored petals and strong fragrances more visible and effective than daytime pigments. Class 9 Science Chapter 11 Reproduction How Life Continues Solutions Chapter 11 ...

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