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  • cell

    Q

    Answer.

    All cells evolved from a common ancestor and use the same kinds of carbon based molecules.

    A
  • What are carbohydrates?

    Q

    Carbohydrates are form of energy.

    A
  • is there symetrical line for everthing

    Q

    no

    A
  • proteins are made up of

    Q

    Proteins are made up of smaller subunits called amino acids.

    A
  • Q

    Acidic oxides are oxides of nonmetals. They can also be termed as inorganic chemicals that react with water to form an acid; or react with a base to form a salt. Acidic oxides are oxides of either nonmetals or of metals in high oxidation states. They are formed when a nonmetal burns. Their chemistry can be systematically understood by taking an oxoacid and removing water from it, until only the oxide is left. The resulting oxide belongs to this group of substances.

    A
  • Find the value of the following ?

    Q

    3x3x3x3x3=3

    A
  • what is fertilization

    Q

    Fertilization in animals:
    The fusion of male and female gametes to produce new organisms is called fertilization or fertilization is the fusion of haploid gametes, egg and sperm, to form the diploid zygote and further develop into new organism.


    There are two types of fertilization:
    Internal fertilization: The fusion of male and female gametes occurs inside the female’s body. Example: Mammals such as Humans, cow, horse, dog etc.
     
    External fertilization: The fusion of male and female gametes occurs outside the body. Example: Fish, frog, starfish etc.
     
    Fertilization in a flower:
    Fertilization is the actual reproductive process where the sperm nuclei fuse with the ovary to form the zygote. In a simple way, a successful pollination leads to fertilization.

    After pollination, each pollen grain on the stigma sends out a tiny threadlike tube. The tube grows down, penetrates the stigma, passes through the style and enters the ovule through an opening called microphyle. In the microphyle it releases two male gametes in the embryo sac. One male gamete fuses with egg cell and the second fuses with the two polar nuclei.

    The fusion of one male gamete with the egg cell is called syngamy or true fertilization while the fusion of second male gamete with two polar nuclei is called triple fusion. Syngamy along with the triple fusion is called double fertilization. Double fertilization is a characteristic feature of flowering plants or angiosperms.


    A
  • Find the circumference of a circle of radius 10.5 cm

    Q

    66cm

    A
  • What is conductor of heat ?

    Q


    An object which allows heat to transmit through it is called a conductor of heat.
    OR
    An object through which heat can be transmitted is called a conductor of heat.
    Examples:  metals, water etc.,

    A
  • Simplify using BODMAS rule: 108/36*1/3+2/5*15/4

    Q

    Assuming the question as: 108 ÷ 36 × 1/3 + 2/5 × 15/4
    = 3 × 1/3 + 2/5 × 15/4
    = 1 + 3/2
    = 5/2

    A

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