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Which of the following group shows ZW-ZZ type of sex determination?
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Which hormones stimulate liver for glycogenesis and glycogenolysis?
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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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Which of the following pair correctly matches a hormone with a disease resulting from its deficiency.
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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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Complete the following table:
| Antibiotic produced | Microbial sources |
| Chloromycetin | ______ |
| ______ | Streptomyces erythreus |
| Penicillin | ______ |
| ______ | Streptomyces griseus |
| Griseofulvin | ______ |
| ______ | Bacillus licheniformis |
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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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Which cells of islets of Langerhans produce a hormone insulin?
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Multiple choice question.
After ovulation, the Graafian follicle changes into ___________.
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Very short answer question.
Which period is known as “age of Reptilia”?
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Complete the chart.
| Era | Dominating group of animal |
| 1. Cenozoic | ____________ |
| 2. _________ | Reptiles |
| 3. Palaeozoic | ____________ |
| 4. _________ | Invertebrates |
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The earliest geological time period among the following is______.
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What is geitonogamy?
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What are fossils?
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In geological time scale which period showed dominance of reptiles?
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Lemur and Tarsier belongs to______.
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Distinguish between ape and man.
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