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    • Posted by Sanjay Sakthi 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Vicky Gupta 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Trishna Singh 8 years, 4 months ago

    CBSE > Class 12 > Biology
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    • Posted by Akshay Soni 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Ramesh Kumar 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Rishita Benjwal 8 years, 4 months ago

    Example is excessive use of herbicide and pesticide has resulted in evolution of resistant varieties of microbes in much lesser time scale as a result pathogenic bacteria are appearing in very short time period

    0Thank You

    Ramesh Kumar 8 years, 4 months ago

    Give me example please.......as u can

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    Rishita Benjwal 8 years, 4 months ago

    We must remember that fittest is based on the characteristics which are inherited So there are some organisms which are better adapted to survive in an otherwise hostile environment Adaptive ability is inherited and it has a genetic basis hence fitness is the end result of the ability to adapt and get selected by nature.

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    • Posted by Akanksha Chandela 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Urvashi Verma 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Mansi Kaushal 8 years, 4 months ago

    1. Energy can neither be created nor be destroyed, it can be changed from one for to another. 2. For every spontaneous change entropy of universe always increases. 3. Entropy of perfectly crystalline solid approaches zero as temperature approaches absolute zero i.e. 0K

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    • Posted by Ankush Purohit 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Ramesh Kumar 8 years, 4 months ago

    It is a process in which one cell of 2n no. Divide in same no...............think so

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    • Posted by Nitu Kumari 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Mohd Shoaib 8 years, 4 months ago

    It waits for fertilisation

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    • Posted by Dhanveer Singh 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Akshita Kumari 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Raj Kumar 8 years, 4 months ago

    Streptokinase is an extracellular protein,extracted from certain strains of beta hemolytic streptococcus. It is a non-protease plasminogen activator that activates plasminogen to plasmin, the enzyme that degrades fibrin cloth through its specific lysine binding site; itis used therefore as a drug in thrombolytic therapy. The rate of bacterial growth and streptokinase production was studied in condition of excess glucose addition to culture media and its pH maintenance. The streptokinase product of the bacterial culture was preliminary extracted by salt precipitation and then purified by affinity chromatography on plasminogen substituted sepharose-4B in a condition that the plasminogen active site was protected from streptokinase-induced activation. The purity of streptokinase was confirmed by SDS-PAGE and its biological activity determined in a specific streptokinase assay. The results showed that in the fed–batch culture, the rate of streptokinase production increased over two times as compared with the batch culture while at the same time, shortening the streptokinase purification to a single step increased the yield over 95% at the chromatography stage.

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    • Posted by Rida Khan 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Varun Banda 8 years, 4 months ago

    Tumor cell is usually localized, and does not spread to other parts of the body. A cancerous cell is another word for a malignant tumor (a malignant neoplasm)and spread to the other parts of the body.

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    • Posted by Nada Nisar Nada 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Rahul Paswan 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Shatakshi Sinha 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Ramesh Kumar 8 years, 4 months ago

    It is a hormone which excelerate the growth of plants

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    Rida Khan 8 years, 4 months ago

    It is a growth hormone present in plants.

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    • Posted by Ritima Roach 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Mohd Shoaib 8 years, 4 months ago

    Thallasemia is a *** linked disease and female is the carrier of this disease

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    • Posted by Anjali Shah 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Ehtesham Mansoor 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Bhavana Acharya 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Soumya Sakshi 8 years, 4 months ago

    In simple words it is the coteyledon of monocotyledonous plant species

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    Amar Kumar 8 years, 4 months ago

    Scutellum: part of the embryo in seeds of the Poaceae (grasses). Can be considered equivalent to the cotyledon of other monocotyledenous seeds. During germination, absorbs degraded storage material from the endosperm and transfers it to the growing axis.

    The scutellum is part of the structure of a barley and rice seed—the modified seed leaf. The scutellum can also refer to the equivalence of a thin cotyledon in monocots (especially members of the grass family).

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    • Posted by Vibha Sharma 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Vikrant Chaudhary 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Soumya Sakshi 8 years, 4 months ago

    To maintain ecological balance

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    • Posted by Varun Kumar 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Shivani Choudhary 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Aftab Khan 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Nipun Pathak 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Ankita Mund 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Debrat Bhattacharyya 8 years, 4 months ago

    8th March

    3Thank You

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    • Posted by Lakshya Shukla 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Anjali Arya 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Deepak Patel 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Kritik Dhruw 8 years, 4 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Soumya Sakshi 8 years, 4 months ago

    You can go with exam idea also.

    0Thank You

    Maharuck Rayeen 8 years, 4 months ago

    By concentration on the ncert book of biology only.

    1Thank You

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