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    • Posted by Tika Chettri 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Nargish Pater 7 years, 3 months ago

    Biomagnification is the accumulation of the toxic substances at successive trophic level.

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    • Posted by Kshitiz Choudhary 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 3 months ago

    Starch is an element present in all photosynthetic plants. We generally find starch in the plant’s roots and seeds. All plants when they synthesize glucose, the extra glucose is stored in the form of starch.

    Starch is a glucan, meaning it only consists of glucose molecules all linked together. The general molecular formula for starch is ( C6H10O5)n. The ‘n’ denotes the number of molecules linked together.

    We find starch in the seeds of plants as granules. On heating these granules in the water we form a colloidal suspension. We obtain two components from this process. These two components are Amylose and Amylopectin.

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    • Posted by Kshitiz Choudhary 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 3 months ago

    Starch is an element present in all photosynthetic plants. We generally find starch in the plant’s roots and seeds. All plants when they synthesize glucose, the extra glucose is stored in the form of starch.

    Starch is a glucan, meaning it only consists of glucose molecules all linked together. The general molecular formula for starch is ( C6H10O5)n. The ‘n’ denotes the number of molecules linked together.

    We find starch in the seeds of plants as granules. On heating these granules in the water we form a colloidal suspension. We obtain two components from this process. These two components are Amylose and Amylopectin.

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    • Posted by Sohinee Roy 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Aditi Bhat 7 years, 3 months ago

    It is actually the non coding strand whose transcription leads to the formation of hnRNA ,later forming mRNA . We call the other strand coding because its sequence seems to be similar to that in the RNA . But in reality, the non coding strand is responsible for transcribing and forming RNA.

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    • Posted by Nargish Pater 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Vijayalakshmi J 7 years, 3 months ago

    the negatively charged DNA moves through the gel towards the positive side of the gel. Shorter lengths of DNA move faster than longer lengths, based on the size and charge.

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    • Posted by Mano Mano 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Vinayak Sharma 7 years, 3 months ago

    DO HARDWORK

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    • Posted by Shriya Gautam 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Vijayalakshmi J 7 years, 3 months ago

    In cactus the leaves are modified to spines. It helps the plant to prevent transpiration(loss of water). It protect the plants from grazing animals.

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    • Posted by Shubham Mehra 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Vijayalakshmi J 7 years, 3 months ago

    RNA interference (RNAi) or Post-Transcriptional Gene Silencing (PTGS)is the regulatory system occurring within eukaryotic cells, that controls the activity of genes. RNAi functions specifically to silence, or deactivate, genes by inhibiting the translation of the gene into a protein.

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    • Posted by Rudra Bajaj 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 3 months ago

    A transgene is a gene or genetic material that has been transferred naturally, or by any of a number of genetic engineering techniques from one organism to another. The introduction of a transgene (called "transgenesis") has the potential to change the phenotype of an organism.

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    • Posted by Arti Vishwakarma 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Vinayak Sharma 7 years, 3 months ago

    It makes lashing movements

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    Teena Kharkwal 7 years, 3 months ago

    It helps in mobility

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    Somya Garg 7 years, 3 months ago

    Its functions only for movement to reach ovum.

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    • Posted by Satyabrat Palei 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Vijayalakshmi J 7 years, 3 months ago

    Protein is formed by multiple amino acids linked together by peptide bonds, forming a polypeptide chain. The mRNA(messenger RNA) is translated in to amino acids which froms the long chain, eventually folded up to form protein.

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    • Posted by Vinay Thakre 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Devyanshi Khandelwal 7 years, 3 months ago

    Scientifically called Eichhornia crassipes is an invasive weed which is introduced for its beautiful flowers in bengal but now it commonly grow in standing water anywhere...it finished our native species and grows into hectares...absorbs oxygen from water and leads to death of aquatic animals..

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    Vinayak Sharma 7 years, 3 months ago

    It absorbs all the oxygen from water

    1Thank You

    ???? Malik 7 years, 3 months ago

    A type of aquatic plant ,also called terror of bangal.it drains O2 from water ,leads to death of fishes

    2Thank You

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    • Posted by Nishant Raj 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Abhishek Beura 7 years, 3 months ago

    When a gene has 3 alleles it is known as multiple allelism since a gene has only 2 alleles eg. Blood grouping ABO..

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    • Posted by Tika Chettri 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Manjeet Jangra 7 years, 3 months ago

    Corpus luteum secretes projestrone which maintains endometrium layer during menstrual cycle

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    Mohit Sepat 7 years, 3 months ago

    Corpous leutum is degenerated graffian follicle .after the release of egg ,the rest part is graffian follicle .it provide the high level of progesterone .

    1Thank You

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    • Posted by Wasim Ahmad 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 3 months ago

    Abiotic components are the non-living chemical and physical factors in the environment that affect ecosystems. Abiotic components play a crucial role in all of biology. Abiotic factors are broadly grouped into physiographic, edaphic and climactic factors and atmospheric gases.

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    • Posted by Shubham Sharma 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 3 months ago

    Rivet-Popper hypothesis was given by famous ecologist Paul Ehrlich. In this hypotheisis -Paul has thrown light on the importance of various components(like different species) of ecosystem  by comparing ecosystem with an aero plane and its components with the airplane rivets. Rivets are nothing but the various bolts which complete the design of plane & help it in flying. If passengers , travelling in the plane found those rivets useful for any of their personnel purpose and take away them then it will result in the unsafe flight and  can lead to plane crash. In the same way,  different components of ecosystem play an important role in maintaining its balance. So, humans should not disturb/use them  for their own benefits as it it ultimately result in the loss of  ecological balance.

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    • Posted by Varun Bharadwaj 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shubham Sharma 7 years, 3 months ago

    Sporopollinen is a hard and highly resistive substance of which exine ,the outer layer of pollen grain is made up of

    2Thank You

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    • Posted by Harsh Tyagi 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Mohit Sepat 7 years, 3 months ago

    Human are homo sapiens

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    • Posted by Bhumika Bhanjale 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sunder Singh 7 years, 3 months ago

    initially floating debris removed by sequential filtration then the grit (soil and small pebbles )are removed by sedimentation these are the two steps involved in the primary treatment of sewage water

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    • Posted by Vishal Depp 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 3 months ago

    Biofertilizers are organisms that enrich the nutrient quality of the soil.

    The main sources of biofertilizers are bacteria, fungi and cyanobacteria.

    Some microbes used as biofertlizers are-

    • Rhizobium form root nodules in leguminous plants and fix atmospheric nitrogen into organic forms, which is used by the plant as nutrient.
    • Free living bacteria like Azospirilium and Azotobacter fix atmospheric nitrogen, hence increases nitrogen content of the soil.
    • Many members of the genus Glomus form Mycorrhiza, which is the symbiotic association of fungi with roots of the plants.

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    • Posted by Mohammad Kaif 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Satyabrat Palei 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    ???? Malik 7 years, 3 months ago

    Formation of protien from mRNA

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    • Posted by Arti Vishwakarma 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 3 months ago

     Endometrium - It helps in implantation of the fertilized ovum. It undergoes cyclic changes that causes mentsruation.

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    • Posted by Satyabrat Palei 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Somya Garg 7 years, 3 months ago

    rRNA is the rna component of ribosomes ,,it is essential for protein synthesis

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    • Posted by Lokesh Sharma 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Mahendra Varman 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    ???? Malik 7 years, 3 months ago

    Recombinant DNA

    1Thank You

    Jaja Kalyan 7 years, 3 months ago

    Genetic material

    1Thank You

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    • Posted by Shibangi Pradhan 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sunder Singh 7 years, 3 months ago

    Each trophic level has a certain mass of living material at a particular time called as standing crop

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    • Posted by Mohit Sepat 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Sumit Diwakar 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Mahak Kanojia 7 years, 3 months ago

    State of suspended growth. Occur in zooplankton when conditions are unfavorable for their survival.

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    • Posted by Mahak Kanojia 7 years, 3 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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