| 1 | Prophase I: Prophase of the first meiotic division is typically longer and more complex when compared to prophase of mit… | Cell Cycle and Cell Division | 11× · last 2024 |
| 2 | Another effective and popular method is the use of Intra Uterine Devices (IUDs). These devices are inserted by doctors o… | Reproductive Health | 11× · last 2024 |
| 3 | Ex situ Conservation– In this approach, threatened animals and plants are taken out from their natural habitat and place… | Biodiversity and Conservation | 9× · last 2025 |
| 4 | The lac operon consists of one regulatory gene (the i gene – here the term i does not refer to inducer, rather it is der… | Molecular Basis of Inheritance | 7× · last 2026 |
| 5 | The enzyme extends the primers using the nucleotides provided in the reaction and the genomic DNA as template. If the pr… | Biotechnology: Principles and Processes | 7× · last 2026 |
| 6 | Both the species benefit in mutualism and both lose in competition in their interactions with each other. In both parasi… | Organisms and Populations | 6× · last 2026 |
| 7 | Homology is based on divergent evolution whereas analogy refers to a situation exactly opposite. Wings of butterfly and… | Evolution | 6× · last 2025 |
| 8 | Gause's 'Competitive Exclusion Principle' states that two closely related species competing for the same resources canno… | Organisms and Populations | 6× · last 2025 |
| 9 | G₁ phase corresponds to the interval between mitosis and initiation of DNA replication. During G₁ phase, the cell is met… | Cell Cycle and Cell Division | 6× · last 2024 |
| 10 | The gymnosperms (gymnos: naked, sperma: seeds) are plants in which the ovules are not enclosed by any ovary wall and rem… | Plant Kingdom | 5× · last 2026 |
| 11 | The functioning of the kidneys is efficiently monitored and regulated by hormonal feedback mechanisms involving the hypo… | Excretory Products and Their Elimination | 5× · last 2026 |
| 12 | In eukaryotes, this organisation is much more complex. There is a set of positively charged, basic proteins called histo… | Molecular Basis of Inheritance | 5× · last 2026 |
| 13 | The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide foll… | Biotechnology: Principles and Processes | 5× · last 2026 |
| 14 | It is expressed in terms of weight (g m⁻²) or energy (kcal m⁻²). The rate of biomass production is called productivity.… | Ecosystem | 5× · last 2026 |
| 15 | In symmetry, the flower may be actinomorphic (radial symmetry) or zygomorphic (bilateral symmetry). When a flower can be… | Morphology of Flowering Plants | 5× · last 2025 |
| 16 | The golgi apparatus principally performs the function of packaging materials, to be delivered either to the intra-cellul… | Cell: The Unit of Life | 5× · last 2025 |
| 17 | In mammals, including humans, insulin is synthesised as a pro-hormone (like a pro-enzyme, the pro-hormone also needs to… | Biotechnology and Its Applications | 5× · last 2025 |
| 18 | Based on the position of calyx, corolla and androecium in respect of the ovary on thalamus, the flowers are described as… | Morphology of Flowering Plants | 5× · last 2024 |
| 19 | The beginning of diplotene is recognised by the dissolution of the synaptonemal complex and the tendency of the recombin… | Cell Cycle and Cell Division | 5× · last 2024 |
| 20 | Collagen is the most abundant protein in animal world and Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO) is the m… | Biomolecules | 4× · last 2026 |
| 21 | Hence for every CO₂ molecule entering the Calvin cycle, 3 molecules of ATP and 2 of NADPH are required. It is probably t… | Photosynthesis in Higher Plants | 4× · last 2026 |
| 22 | Plants follow different pathways in response to environment or phases of life to form different kinds of structures. Thi… | Plant Growth and Development | 4× · last 2026 |
| 23 | Leucocytes are also known as white blood cells (WBC) as they are colourless due to the lack of haemoglobin. They are nuc… | Body Fluids and Circulation | 4× · last 2026 |
| 24 | Selectable marker: In addition to 'ori', the vector requires a selectable marker, which helps in identifying and elimina… | Biotechnology: Principles and Processes | 4× · last 2026 |
| 25 | Cloning sites: In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites f… | Biotechnology: Principles and Processes | 4× · last 2026 |
| 26 | A population growing in a habitat with limited resources show initially a lag phase, followed by phases of acceleration… | Organisms and Populations | 4× · last 2026 |
| 27 | Causes of biodiversity losses: The accelerated rates of species extinctions that the world is facing now are largely due… | Biodiversity and Conservation | 4× · last 2026 |
| 28 | The adrenal medulla secretes two hormones called adrenaline or epinephrine and noradrenaline or norepinephrine. These ar… | Chemical Coordination and Integration | 4× · last 2025 |
| 29 | In addition to DNA-dependent DNA polymerases, many additional enzymes are required to complete the process of replicatio… | Molecular Basis of Inheritance | 4× · last 2025 |
| 30 | Origin of replication (ori): This is a sequence from where replication starts and any piece of DNA when linked to this s… | Biotechnology: Principles and Processes | 4× · last 2025 |
| 31 | Some strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans (tobacco budworm… | Biotechnology and Its Applications | 4× · last 2025 |
| 32 | When sepals or petals in a whorl just touch one another at the margin, without overlapping, as in Calotropis, it is said… | Morphology of Flowering Plants | 4× · last 2024 |
| 33 | Stamens of flower may be united with other members such as petals or among themselves. When stamens are attached to the… | Morphology of Flowering Plants | 4× · last 2024 |
| 34 | The anatomy of the monocot root is similar to the dicot root in many respects. It has epidermis, cortex, endodermis, per… | Anatomy of Flowering Plants | 4× · last 2024 |
| 35 | Lipids are generally water insoluble. They could be simple fatty acids. A fatty acid has a carboxyl group attached to an… | Biomolecules | 4× · last 2024 |
| 36 | The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both… | Body Fluids and Circulation | 4× · last 2024 |
| 37 | Henle's Loop: Reabsorption is minimum in its ascending limb. However, this region plays a significant role in the mainte… | Excretory Products and Their Elimination | 4× · last 2024 |
| 38 | The hindbrain comprises pons, cerebellum and medulla (also called the medulla oblongata). Pons consists of fibre tracts… | Neural Control and Coordination | 4× · last 2024 |
| 39 | Both LH and FSH attain a peak level in the middle of cycle (about 14th day). Rapid secretion of LH leading to its maximu… | Human Reproduction | 4× · last 2024 |
| 40 | Some of these infections like hepatitis-B and HIV can also be transmitted by sharing of injection needles, surgical inst… | Reproductive Health | 4× · last 2024 |
| 41 | Salmonella typhi is a pathogenic bacterium which causes typhoid fever in human beings. These pathogens generally enter t… | Human Health and Diseases | 4× · last 2024 |
| 42 | Tissue matching, blood group matching are essential before undertaking any graft/transplant and even after this the pati… | Human Health and Diseases | 4× · last 2024 |
| 43 | Memory-based acquired immunity evolved in higher vertebrates based on the ability to differentiate foreign organisms (e.… | Human Health and Diseases | 4× · last 2024 |
| 44 | Microbes are also used for commercial and industrial production of certain chemicals like organic acids, alcohols and en… | Microbes in Human Welfare | 4× · last 2024 |
| 45 | The first restriction endonuclease–Hind II, whose functioning depended on a specific DNA nucleotide sequence was isolate… | Biotechnology: Principles and Processes | 4× · last 2024 |
| 46 | Habitat loss and fragmentation: This is the most important cause driving animals and plants to extinction. The most dram… | Biodiversity and Conservation | 4× · last 2024 |
| 47 | Placentation: The arrangement of ovules within the ovary is known as placentation. The placentation are of different typ… | Morphology of Flowering Plants | 4× · last 2023 |
| 48 | Some cells in the adult animals do not appear to exhibit division (e.g., heart cells) and many other cells divide only o… | Cell Cycle and Cell Division | 4× · last 2023 |
| 49 | Haemophilia: This sex linked recessive disease, which shows its transmission from unaffected carrier female to some of t… | Principles of Inheritance and Variation | 4× · last 2023 |
| 50 | Opioids are the drugs, which bind to specific opioid receptors present in our central nervous system and gastrointestina… | Human Health and Diseases | 4× · last 2023 |