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    • Posted by Anas Gout 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Lavi Kadiyan 6 years, 7 months ago

    Hope it will work if yes then reply me

    0Thank You

    Lavi Kadiyan 6 years, 7 months ago

    DNA replication is the process by which DNA makes a copy of itself during cell division

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    • Posted by Manish A®Ya? 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 5 answers

    Sia ? 6 years, 7 months ago

    Mendel selected garden pea for his experiments because:-
    (a) Pure varieties of pea were available in which self as well as cross pollination could be carried out.
    (b) Pea plant showed a number of easily detectable contrasting characters.
    Biological name of garden pea is Pisum sativum

    0Thank You

    Manish A®Ya? 6 years, 7 months ago

    Tysm all

    0Thank You

    Manish A®Ya? 6 years, 7 months ago

    Tysm dear

    0Thank You

    Cute_Girl_0003 ?? 6 years, 7 months ago

    Mendel selected garden pea for his experiments because :- • it is annual plant with short life cycle. • pea plants could easily be raised,maintained and handled. • pea plants produces a large no. of seeds in one generation. • a no. of easily detectable contrasting characters/ traits were available. • it has a perfect bisexual flowers containing both male and female parts. I hope this answer will help u . ??

    1Thank You

    Aleema Yunus 6 years, 7 months ago

    Mendel selected garden pea for his experiments because :- Pea plant is a bisexual flower. It has self pollinating ability and it is a annual plant

    1Thank You

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    • Posted by Soumya Kumari 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Nidhi Pandey 6 years, 8 months ago

    Simply it can be define as the process of engulfing(or taking)of food by ameoba.

    1Thank You

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    • Posted by Lavi Kadiyan 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Lavi Kadiyan 6 years, 7 months ago

    Thanx rani

    0Thank You

    Rani Jojo Jojo 6 years, 8 months ago

    It is also called as polygenic inheritance.when one character is controlled by more than one gene. Here each allele contributes an additive effect on the total exprssion of that character.Eg .skin colour in human.

    1Thank You

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    • Posted by Lavi Kadiyan 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Lavi Kadiyan 6 years, 8 months ago

    Thanks

    0Thank You

    ▪▪Amrit▪▪ ❤ 6 years, 8 months ago

    i heard it first time. u should do ncert exempler or gurukul book of questions . u must do it . that is the best book for revision..

    1Thank You

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    • Posted by Lavi Kadiyan 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 4 answers

    Lavi Kadiyan 6 years, 7 months ago

    So nice of u

    1Thank You

    ꧁≪Mämƭå ℭℏ۝ᑌĎℎàℜÿ? 6 years, 8 months ago

    Most welcome ?

    1Thank You

    Lavi Kadiyan 6 years, 8 months ago

    Thanks

    1Thank You

    ꧁≪Mämƭå ℭℏ۝ᑌĎℎàℜÿ? 6 years, 8 months ago

    Ya..why not it will help you to grasp the NCERT properly and will also help in neet

    1Thank You

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    • Posted by Lavi Kadiyan 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Lavi Kadiyan 6 years, 7 months ago

    Okkkk

    0Thank You

    Rani Jojo Jojo 6 years, 8 months ago

    Pedigree analysis helps to trace the inheritance of an abnormal trait or a disorder that runs in the family.It helps in marriage councelling to avoid the occurance of such cases.

    1Thank You

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    • Posted by Yash Varma 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Amrita Mohanty 6 years, 7 months ago

    It is a finger like small projection present in small intestine

    0Thank You

    Yogita Pareek 6 years, 8 months ago

    Intestinal villi (singular: villus) are small, finger-like projections that extend into the lumen of the small intestine. ... Villi increase the internal surface area of the intestinal walls making available a greater surface area for absorption.

    1Thank You

    Lavi Kadiyan 6 years, 8 months ago

    The outermost covering is called villi

    1Thank You

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    • Posted by Vinita Kujur 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Sia ? 6 years, 8 months ago

    It is that branch of science which deals with study of heredity (inheritance of characters) and variations. It deals with in born characteristics of the organisms. Genetics also deals with inborn differences between offsprings of family and related organisms. Genes are carriers of characters and present on chromosomes. Mendel is considered as "Father of genetics."

    1Thank You

    Shivam Chaurasia 6 years, 7 months ago

    Genetics deals with inheritenceof characters variation and evolution take place throughout life of living organism.

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    • Posted by Ludiya Laishram 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Sia ? 6 years, 8 months ago

    You can get last year papers here : https://mycbseguide.com/cbse-question-papers.html

    2Thank You

    Ludiya Laishram 6 years, 7 months ago

    Thanks

    0Thank You

    ANSWER

    • Posted by Anshika Tiwari 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Amrita Mohanty 6 years, 7 months ago

    May be it is neccesary to be through with ncert book only first we understand the concepts so in arihant we can only give a glance for a revision purpose it is better ur wish

    0Thank You

    Lavi Kadiyan 6 years, 7 months ago

    Ya

    0Thank You

    Aditya Kumar 6 years, 8 months ago

    Yes

    0Thank You

    ANSWER

    • Posted by Varsh? Rajput 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Aditya Kumar 6 years, 8 months ago

    Each cell of developing embryo after fertilization is referred to as blastomeres

    0Thank You

    Aysha Enami 6 years, 8 months ago

    During the development of zygote the zygote divides to form 2,4,8,16 daughter cell these are called blastomere

    0Thank You

    Yogita Ingle 6 years, 8 months ago

    Cleavage is the mitotic division which starts as the zygote moves through the isthmusof the oviducttowards the uterus and forms2, 4, 8, 16 daughter cells called as blastomeres

    1Thank You

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    • Posted by Divya Sehwag 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Divya Sehwag 6 years, 8 months ago

    Thanks

    0Thank You

    Aditya Kumar 6 years, 8 months ago

    Meosis is a reductional division in which chromosome number is reduced to half of the parent cell.in meosis one parent cell give rise to four haploid (if parental cell is diploid) daughter cells

    1Thank You

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    • Posted by Vinay Kumar 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Shivam Chaurasia 6 years, 7 months ago

    Punnet square is graphical and statistical analysis of crossing .

    0Thank You

    Devanshi Gupta 6 years, 8 months ago

    Graphical representation to calculate the probability genotypes of offsprings in a genetic cross. It may help u ?

    0Thank You

    ANSWER

    • Posted by Shrutika Prasad 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Pratik Sahoo 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 6 years, 8 months ago

      Prokaryotes Eukaryotes
    Type of Cell  Always unicellular Unicellular and multi-cellular
    Cell size Ranges in size from 0.2 μm – 2.0 μm in diameter Size ranges from 10 μm – 100 μm in diameter
    Cell wall Usually present; chemically complex in nature When present, chemically simple in nature
    Nucleus Absent Present
    Ribosomes Present. Smaller in size and spherical in shape Present. Comparatively larger in size and linear in shape
    DNA arrangement Circular Linear
    Mitochondria Absent  Present
    Cytoplasm Present, but cell organelles absent Present, cell organelles present
    Endoplasmic reticulum Absent Present
    Plasmids Present Very rarely found in eukaryotes
    Ribosome Small ribosomes  Large ribosomes

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    • Posted by Aaaaaaaa Bbbbbbbbb 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Rani Jojo Jojo 6 years, 8 months ago

    Thermus aquatics .used in PCR STEP

    0Thank You

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    • Posted by Krishna Yadav 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Lavi Kadiyan 6 years, 8 months ago

    Dehiscense means bursting up of anther

    1Thank You

    Priya # 6 years, 8 months ago

    Dehiscence of pollen means the bursting of pollen grains out of its polle sac.

    1Thank You

    ANSWER

    • Posted by Kush Garg 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sia ? 6 years, 8 months ago

    Check last year papers here : https://mycbseguide.com/cbse-question-papers.html

    1Thank You

    ANSWER

    • Posted by Vinayak Dhage 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 6 years, 8 months ago

    Genes are functional units of heredity as they are made of DNA. The chromosome is made of DNA containing many genes. Every gene comprises of the particular set of instructions for a particular function or protein coding. Genes come in pairs in the same way like the chromosomes. Genes control the functions of DNA and RNA.

    0Thank You

    ANSWER

    • Posted by Dhruvrajsinh Jadeja 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 6 years, 8 months ago

    Narrowly utilitarian- humans derive countless direct economic benefits from nature such as cereals, pulses, fruits, firewood, fiber, construction material, industrial products like tannins, lubricants, dyes, resins, and perfumes.

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    • Posted by Dhruvrajsinh Jadeja 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 6 years, 8 months ago

    Biocontrol refers to the use of biological methods for controlling plant diseases and pests.

    Chemicals, insecticides and pesticides are extremely harmful to human beings and also these pollute our environment.

    The use of biocontrol measures will greatly reduce our dependence on toxic chemicals and pesticides.

    Biocontrol agents are which are useful in controlling plant diseases and pests are-

    • The ladybird, a beetle with red and black markings and dragon flies are useful to get rid of aphids and mosquitoes respectively.
    • Bacteria Bacillus thuringiensis (Bt) is used to get rid of butterfly caterpillars where dried spores of Bacillus thuringiensis are mixed with water and sprayed onto vulnerable plants such as brassicas and fruit trees and these are eaten by the insect larvae and in the gut of the larvae, the toxin is released and the larvae get killed.

    0Thank You

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    • Posted by Sneha Bm 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Aysha Enami 6 years, 8 months ago

    If wrong type of pollengrain comes on pistil then the pistil recognizes it and reject it it is called incompatibility .

    0Thank You

    Rani Jojo Jojo 6 years, 8 months ago

    liability of germination of pollen to the stigma of the same flower.

    0Thank You

    ANSWER

    • Posted by Rashi Srivastava 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Amrita Mohanty 6 years, 7 months ago

    The possibilities are AB,A,B

    0Thank You

    Lavi Kadiyan 6 years, 8 months ago

    The possible genotype of the oter offsprings are AB,A,B hope it will help if it then reply

    1Thank You

    Priya # 6 years, 8 months ago

    Father's blood grp A O type. Mother's blood grp B O type.

    0Thank You

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    • Posted by Rashi Srivastava 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Tashu Bidhuri 6 years, 8 months ago

    No, it is not possible as the man have both alleles for O and the woman has alleles A and B. So after their cross, the child can either habe the blood group A or B.

    1Thank You

    ANSWER

    • Posted by Joel Debbarma 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Aysha Enami 6 years, 8 months ago

    Reproduction is important because - * It maintains the continuity of species . *It protect the organism from extinct. *Due to reproduction organism looks different from each other. *Due to reproduction variation comes into the offspring and long period of variation leads to evolution, so reproduction promotes evolution. *Due yo reproduction useful characters of parents come into ka offspring.

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 8 months ago

    Reproduction is important for the survival of all living things. Without a mechanism for reproduction, life would come to an end. There are two types of reproduction to learn in elementary grades, asexual and sexual reproduction. ... Some cells reproduce by unequal division of the cells, this is called budding.

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    • Posted by Nisha Choudhary 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Gurkirat Singh 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shivam Chaurasia 6 years, 7 months ago

    In nitrogen at about 90 degree cecius.

    0Thank You

    ANSWER

    • Posted by Piyush Sharma 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Ishita Ishita 6 years, 8 months ago

    CBSE > Class 12 > Biology
    • 4 answers

    Ishita Ishita 6 years, 7 months ago

    Its okay??thnk u

    1Thank You

    K@Łp@N@ $Øđh!?? 6 years, 8 months ago

    Phenotypic adaptation involves changes in the body of an organism in response to genetic mutation or certain environmental changes. These responsive adjustments occur in an organism in order to cope with environmental conditions present in their natural habitats.

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 8 months ago

    Sry ye galti se likha gya

    0Thank You

    Yogita Ingle 6 years, 8 months ago

    Phenotypic adaptation involves changes in the body of an organism in response to genetic mutation or certain environmental changes. These responsive adjustments occur in an organism in order to cope with environmental conditions present in their natural habitats. For example, desert plants have thick cuticles and sunken stomata on the surface of their leaves to prevent transpiration. Similarly, elephants have long ears that act as thermoregulators.

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