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4101.

90 percent of a plant body is made up of:

Answer»

90 percent of a plant body is made up of:


4102.

What causes water molecules to stick together and pull each other up a plant stem?

Answer»

What causes water molecules to stick together and pull each other up a plant stem?


4103.

Which of the following is not a function of plough?

Answer»

Which of the following is not a function of plough?


4104.

What kind of respiration is carried out in humans?

Answer»

What kind of respiration is carried out in humans?


4105.

Mention how soil erosion can be prevented. [3 MARKS]

Answer»

Mention how soil erosion can be prevented. [3 MARKS]

4106.

The science of cultivation of land and production of grains and other food crops in large scale is known as

Answer»

The science of cultivation of land and production of grains and other food crops in large scale is known as


4107.

What is reverse osmosis ?

Answer» What is reverse osmosis ?
4108.

Which part of sperm cell is responsible for locomotion and in which way sperm cell generates energy for the locomotion?

Answer»

Which part of sperm cell is responsible for locomotion and in which way sperm cell generates energy for the locomotion?


4109.

_______________ produces female gametes.

Answer»

_______________ produces female gametes.


4110.

During menstrual bleeding, the fluid that comes out of the vagina also contains an __ along with blood.

Answer»

During menstrual bleeding, the fluid that comes out of the vagina also contains an __ along with blood.

4111.

Flow of energy in an ecosystem is always

Answer»

Flow of energy in an ecosystem is always


4112.

Manures and fertilisers are ________ .

Answer»

Manures and fertilisers are ________ .


4113.

Which chromosome is contributed by the sperm during fertilization?

Answer»

Which chromosome is contributed by the sperm during fertilization?


4114.

Which of the following is/are characteristics of meristematic cells?

Answer»

Which of the following is/are characteristics of meristematic cells?


4115.

Identify A,B & C in the above figure ('Z' scheme of light reaction)

Answer»

Identify A,B & C in the above figure ('Z' scheme of light reaction)


4116.

Some diseases are caused due to chemical and physical agents. Choose the chemical agents from the given options.

Answer»

Some diseases are caused due to chemical and physical agents. Choose the chemical agents from the given options.


4117.

Why does larynx does not develop in girls

Answer»

Why does larynx does not develop in girls

4118.

Assertion [A]: The rate of glomerular filtration is high. Reason [R]: The diameter of the afferent arteriole is smaller than that of the efferent arteriole.

Answer»

Assertion [A]: The rate of glomerular filtration is high.

Reason [R]: The diameter of the afferent arteriole is smaller than that of the efferent arteriole.


4119.

The hormones are destroyed in which organ of the body?

Answer»

The hormones are destroyed in which organ of the body?


4120.

One stands the risk of dehydration in:

Answer»

One stands the risk of dehydration in:


4121.

Which of the following organisms is/are NOT on the verge of extinction?

Answer»

Which of the following organisms is/are NOT on the verge of extinction?


4122.

Why does Siberian crane come from Siberia to places like Bharatpur in India every year for a few months ?

Answer»

Why does Siberian crane come from Siberia to places like Bharatpur in India every year for a few months ?

4123.

Does the homemade will get rotten if you keep it open for a very long time?

Answer» Does the homemade will get rotten if you keep it open for a very long time?
4124.

___ and ___ are the female sex hormones.

Answer»

___ and ___ are the female sex hormones.

4125.

Before growing a crop soil is and to facilitate at the healthy growth of plant

Answer»

Before growing a crop soil is and to facilitate at the healthy growth of plant

4126.

What is hemp and hemp paper

Answer»

What is hemp and hemp paper

4127.

Name any two special chemicals which are used as food preservatives.

Answer»

Name any two special chemicals which are used as food preservatives.

4128.

If thickness of a pile of 12 cardbords is 65 mm . Find the thickness of a pile of 312 such cardboards

Answer» If thickness of a pile of 12 cardbords is 65 mm . Find the thickness of a pile of 312 such cardboards
4129.

the ovary releases only one egg in a month. Write, under what circumstances twins are born in human?

Answer»

the ovary releases only one egg in a month. Write, under
what circumstances twins are born in human?

4130.

Difference between freely permeable membrane and impermeable membrane

Answer»

Difference between freely permeable membrane and impermeable membrane

4131.

In a family both the husband and wife are heterozygous for a condition of infantile blindness. They wish to have at least 3 children. What would be the possibility that all these children would be normal?

Answer»

In a family both the husband and wife are heterozygous for a condition of infantile blindness. They wish to have at least 3 children. What would be the possibility that all these children would be normal?

4132.

(a) State the function of Food Corporation of India. (b) What is done to protect the grains stored in gunny bags in big godowns from damage ?

Answer»

(a) State the function of Food Corporation of India.

(b) What is done to protect the grains stored in gunny bags in big godowns from damage ?

4133.

Which of the following hormones can affect blood pressure?

Answer»

Which of the following hormones can affect blood pressure?


4134.

What is the main male reproductive organ and what is its function?

Answer»

What is the main male reproductive organ and what is its function?


4135.

Which cell in the human body can change its shape?

Answer»

Which cell in the human body can change its shape?


4136.

Which of the following is the largest single cell?

Answer»

Which of the following is the largest single cell?


4137.

Which of the following cell parts is a flexible structure with selective permeability?

Answer»

Which of the following cell parts is a flexible structure with selective permeability?


4138.

what Is pasterisation.

Answer» what Is pasterisation.
4139.

Name one 'single cell' which behaves like a complete organism.

Answer» Name one 'single cell' which behaves like a complete organism.
4140.

How to do the electrolysis of liquefied CO2 ?

Answer» How to do the electrolysis of liquefied CO2 ?
4141.

What does an equine mean?

Answer» What does an equine mean?
4142.

Which among the following is/ are a type of silkworms used for extraction of silk?

Answer»

Which among the following is/ are a type of silkworms used for extraction of silk?


4143.

Explain cloning?

Answer» Explain cloning?
4144.

What is photochemical smog??

Answer» What is photochemical smog??
4145.

What are the differences between a Wildlife Sanctuary and a National Park ?

Answer»

What are the differences between a Wildlife Sanctuary and a National Park ?

4146.

State an important function performed by blue-green algae.

Answer»

State an important function performed by blue-green algae.

4147.

Absence or low number of clotting factors result in rare condition called

Answer»

Absence or low number of clotting factors result in rare condition called


4148.

The plastid/s found in a plant cell:

Answer»

The plastid/s found in a plant cell:


4149.

Which of the following is not a sexually transmitted diseases?

Answer»

Which of the following is not a sexually transmitted diseases?


4150.

What do we call the outermost covering of the cell that separates the contents of the cell from its external environment?

Answer»

What do we call the outermost covering of the cell that separates the contents of the cell from its external environment?