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Explain Double Fertilization in plants.

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Updated on 10-Oct-2022 09:37:38

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Double fertilization involves the fusion of one female gametophyte with two male gametes. In angiosperms, when the two sperm cells fertilize the synergid cell of the ovule, two structures will form, such as the zygote and endosperm. Hence, it is known as double fertilization.One out of two sperm cells fuses ... Read More

Fill in the blanks.1. ________ soil has poor air circulation.2. The ________ horizon is rich in humus.3. ________ soil holds very little water due to bigger space available among the soil particles.4. Pulses grow well in ________ soil.5. Deforestation results in soil ________ .

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Tutorialspoint

Updated on 10-Oct-2022 09:37:38

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1. Clayey soil has poor air circulation.2. The O horizon is rich in humus.3. Sandy soil holds very little water due to bigger space available among the soil particles.4. Pulses grow well in loamy soil.5. Deforestation results in soil erosion.

What is a neutral solution?

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Tutorialspoint

Updated on 10-Oct-2022 09:37:38

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A solution which is neither acidic nor basic is called a neutral solution. Its pH value is 7. It does not change the colour of the indicator.A solution is defined as neutral if the concentration of hydrogen ions is the same as the concentration of hydroxide ions:Neutral solution: [H+] = ... Read More

What is the suspension?

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Updated on 10-Oct-2022 09:37:38

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Suspension refers to a mixture where a solid particle does not dissolve in a liquid solution.Emulsions are a type of suspension, where two immiscible liquids are mixed together.Examples of suspended solutions include saltwater, sand in water, and muddy water.

A hen's egg can be seen easily. Is it a cell or a group of a cell?

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Tutorialspoint

Updated on 10-Oct-2022 09:37:38

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A hen’s egg is an example of a macroscopic cell. A hen’s egg is unicellular until it is fertilized. Then as the fertilized egg (zygote) begins to divide or grow into an embryo, the single-cell divides multiple times, hence becoming multicellular.The albumen (the egg white) and the yolk (yellow part of ... Read More

How sperm enters the female body?

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Tutorialspoint

Updated on 10-Oct-2022 09:37:38

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During sex, when the male ejaculates (when semen leaves the penis), a small amount of semen is deposited into the vagina.Semen contains millions of sperm and they "swim" up from the vagina through the cervix and uterus to meet the egg in the fallopian tube. After ejaculation, sperm can live ... Read More

What is a coordinate graph?

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Tutorialspoint

Updated on 10-Oct-2022 09:37:38

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Co-ordinate graph:Co-ordinate graph is used to locate points. Each point can be identified by  a number on the $x$-axis called an $x$-coordinate, and a number on the $y$-axis called a $y$-coordinate.  The $x$-coordinate tells you how many steps you have to take to the right on the $x$-axis. And the y-coordinate ... Read More

What is distributive property?

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Tutorialspoint

Updated on 10-Oct-2022 09:37:34

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The distributive property of multiplication states that when a factor is multiplied by the sum or difference of two terms, it is essential to multiply each of the two numbers by the factor, and finally perform the addition or subtraction operation.This property is symbolically stated as:a (b+ c) = aXb ... Read More

What is a Flame?

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Tutorialspoint

Updated on 10-Oct-2022 09:37:34

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When any substances are burnt with the help of oxygen, a hot luminous gas emerges out. This gas is called flame.Examples include kerosene oil, wax.Structure of Flame:Below are the layers of flame:Outermost zone: It is blue in colour and is hottest amongst all the zones. In this portion, complete combustion ... Read More

What do you mean by Potable water?

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Tutorialspoint

Updated on 10-Oct-2022 09:37:34

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Potable water is defined as water that is suitable for human consumption. The term implies that the water is drinkable as well as safe.

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