Please select a subject first
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Explain the haplo-diploid method of sex determination in the honey bee.
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Define Speciation.
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What is parthenogenesis?
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Which hormone is secreted by Pineal gland? What is its function?
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How drones are produced in honey bees?
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Explain the mechanism of sex determination in birds.
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Explain the mechanism of sex determination in humans with a suitable chart.
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What is ‘Hello Forest’?
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Name the Japanese method of plantation adapted by our government.
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Describe any four measures to achieve Mission Harit Maharashtra.
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Which of the following group shows ZW-ZZ type of sex determination?
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Why recycling of e-wastes is considered dangerous?
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Cichlid fishes in Lake Victoria are representatives of ______ type of speciation.
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Add a note on allopatric speciation.
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Add a note on sympatric speciation.
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Write a note on pineal gland.
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Complete the following chart:
| Animals | Connecting link between | |
| (1) | Balanoglossus | ______ |
| (2) | ______ | Annelida and Arthropoda |
| (3) | Lung fishes | ______ |
| (4) | ______ | Reptiles and mammals |
| (5) | Seymouria | ______ |
| (6) | Fishes and Amphibia |
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What is sex determination? Explain the mechanism of sex determination in the case of birds.
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Arrange the major events as per geological time scale:
(Origin of conifers, Abundance of trilobites, Diversification of fishes, All types of marine algae, Formation of Forests, Rise of dinosaurs, Extinction of seed ferns, Rise of modern insects.)
| Geological time period |
Major events | |
| 1. | Cambrian | ______ |
| 2. | Devonian | ______ |
| 3. | Permian | ______ |
| 4. | Triassic | ______ |
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Hormone thyroxine, adrenaline, and nonadrenaline are formed from _____________.
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