Please select a subject first
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In human females, meiosis II is not completed until:
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Which of the following suits hotspots in ecological terminology?
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Gametes of threatened species can be preserved in viable and fertile conditions for long periods using ______.
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Which of the following statement is true for enzymes?
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What is the sustainable use of resources?
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Western Ghats have a large number of plant and animal species that are not found anywhere else. Which of the following terms will you use to notify such species?
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A graphic representation of the biomass relationship between the producer and consumer in an ecosystem is called ______.
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Enzyme sucrase belongs to which one of the following classes?
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The ligand-gated ion channel is present on ______.
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Consider the following statements:
- Statement I: Endemism and accelerated habitat loss are characteristics of biodiversity hotspots.
- Statement II: Gene bank is an in-situ method of biodiversity conservation.
Choose the correct answer from the options given below.
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When a species goes extinct in one area, it is often desirable to re-introduce the species from other populations. A major problem with this approach is that ______.
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Decline in the population of Indian native fishes due to introduction of Clarias gariepinus in river Yamuna can be catogoriesd as ______.
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In glycolysis, the enzyme dehydrogenase is involved in ______.
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Given below are two statements.
- Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
- Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.
In light of the above statements, select the correct answer from the option given below.
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Many species like Stellar's Sea cow and passenger pigeon have been driven to the brink of extinction. Which of the following describes this situation?
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Match the species in Column I with its category in Column II.
| Column I | Column II |
| A. Rare species | I. No species |
| B. Vulnerable species | II. Facing a high risk of extinction |
| C. Endangered species | III. Localised species |
| D. Extinct species | IV. Species under threat |
Choose the correct answer from the options given below.
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Choose the correct statement among the following.
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Enzymes are different from catalysts in ______.
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By which part of the vasa recta, NaCl is returned to the medullary interstitium?
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During spermatogenesis meiosis occurs in ______.
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