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Meristematic tissue consits of compactly arranged cells which are capable of division to produce new cells. They have dense cytoplasm prominent nucleus and no vacoules as no food is produced during division in this tissue.

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Mayur Kinhekar 7 years, 6 months ago

I dont know

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What pat

Posted by Mantha Devi Suryanarayana 5 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Harshvardhan Singh 7 years, 6 months ago

First write the whole question

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What is chlorenchyma and aerenchyma.

Posted by Shivangi Malakar 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Akshat Dang 7 years, 6 months ago

Collerchyma contain irregular thick wall due to presence of pectin and function it provided mechanical strength to tissue

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Neeta Zanwar 7 years, 6 months ago

× Parenchyma with chlorophyll ,which performs photosynthesis, are called Chlorenchyma. × Parenchyma with large air spaces in aquaticto give them buoyancy, that help them to float, are called Arenchyma.

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What is simple permanet tissue.

Posted by Shivangi Malakar 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 7 years, 6 months ago

Simple Permanent Tissue: Simple permanent tissue is composed of similar types of cells. Simple permanent tissues are of three types, viz. parenchyma, collenchyma and sclerenchyma.
(1) Parenchyma: The cells of parenchyma have thin cell wall.
(2) Collenchyma: The cell wall of collenchyma is thickened at corners.
(3) Sclerenchyma: The cell wall in sclerenchyma is highly thickened all around.

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Shivangi Malakar 7 years, 6 months ago

Sub division as

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What is dialysis

Posted by Diya Kathait 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Dialysis is an artificial process used for filtering the blood in the human body. This treatment is introduced to a patient when their kidneys could no longer perform this function. It helps to get rid of extra body’s wastes and controls the blood pressure.

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Air is what mixture or compound if any from both then why

Posted by Aman Chaubey 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

In general compounds are formed by the chemical combination (chemical reaction) of different elements, molecules with each other. Whereas mixtures are formed by the combination of different elements, molecules and even compounds which are not chemically reacted with each other.
Air is considered as a mixture of gases, as the component gases does not reacts with each other.
If the gases present in it reacts with each other then it will not considered as mixture but as a compound.

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What is the PH value of blood?

Posted by Gaurav Verma 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Aditya Bhosale 7 years, 6 months ago

7.40000.....

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Gaurav Verma 7 years, 6 months ago

7.4

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Why air is called a mixture not a gas?

Posted by Khushi Raj 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Shivangi Malakar 7 years, 6 months ago

Because air is no only one type of gas.this is mixture of more than one gas .so this is mixture ..

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Anubhav Rai 7 years, 6 months ago

In atmosphere there are many gases like carbon dioxide,oxygen,nitrogen,etc.so,they are called mixture.And gas means there will be only one type of substance.

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How can we separate 1 Honey and water 2 Blood from blood cells

Posted by Khushi Raj 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Aditya Bhosale 7 years, 6 months ago

By chromatography process

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Suwathi B 7 years, 6 months ago

We can seperate both by centrifugation method

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Name any two groups of micro organism from which anti biotics could be extracted

Posted by Lakshya Agarwal 7 years, 6 months ago

CBSE > Class 09 > Science

3 answers

Srisha Singh 7 years, 6 months ago

rhizobium bacteria

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Nirbhay Thakur 7 years, 6 months ago

Same as

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Yogita Ingle 7 years, 6 months ago

Fungi (Penicillium notatum) and Bacteria (Streptomyces cerevisae).

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Expand AIDS

Posted by Lakshya Agarwal 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

AIDS: Acquired Immune Deficiency Syndrome.

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Modal on electromagnets

Posted by Harsh Aryan 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Electromagnets are made out of a coil of wire (wire curled in series). This is more effective in producing a magnetic field than just a wire running straight. This effect can be strengthened by winding a wire tightly around a powerful core, made of magnetic material, such as iron. The picture above shows a coil wound around an iron nail. On its own, the iron nail is not magnetic.

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In gravitation What G and value What g and value

Posted by Viniz Bhandari 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

The value of G (universal gravitation constant) is calculated by substituting the values of mass of the earth and its radius and acceleration due to gravity which are know by the other means as G = 6.67 × 10-11 Nm2 kg^-2.
g is referred as the acceleration of gravity. Its value is 9.8 m/s² on Earth.

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Convert 1N into dynes

Posted by Rakhi Singh 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Change one system of unit in other system by first write the quantity in terms of fundamental quantities and then apply unit conversion rules. For example if you want to change unit of force Newton into dyne i.e. from SI unit to CGS unit.
First break Newton into fundamental units.
As, force = mass × acceleration
i.e. 1 N = 1 kg × 1m/s²
Now to change it into CGS system.
1 kg = 1000 g and, 1 m = 100 cm
Now in CGS unit, 1 N = (1000 g) × 100cm/s²
1 N = 100000 g cm/s² = 10⁵ dyne

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Function of cytoplasm?

Posted by Janesh Verma 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Most of the important activities of the cell occur in the cytoplasm. Cytoplasm contains molecules such as enzymes which are responsible for breaking down waste and also aid in metabolic activity.
Cytoplasm is responsible for giving a cell its shape. It helps to fill out the cell and keeps organelles in their place. Without cytoplasm, the cell would be deflated and materials would not be able to pass easily from one organelle to another.
Cytosol is the part of the cytoplasm that does not contain organelles. Instead, cytosol is confined by the boundaries of a matrix which fills the part of the cell that does not contain organelles.

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Write the name of largest and longest cell

Posted by Suhani Agrahari 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Anshika Prakash 7 years, 6 months ago

Longest cell is a neuron.

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Yogita Ingle 7 years, 6 months ago

The largest biological cell is often cited as the ostrich egg, which is about 15 cm (6 in) long and weigh about 1.4 kg (3 lb). This is a myth. There are at least several biological cells larger than an ostrich egg, despite the fact that even numerous scientists and lay people believe the ostrich egg is indeed the largest biological cell. The ostrich may actually be the heaviest cell, but this has not yet been tested.

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Plan to go to a place by a vehicle .take readings of odometer and speedometer after every 5 minutes till you reach your destination.record these observations in tabular form; plot graph between distance-time and speed-time.state whether this motion is uniform or non uniform

Posted by Pandi Varshini 7 years, 6 months ago

CBSE > Class 09 > Science

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When the acceleration is positive?

Posted by Gian Kaur 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Anshika Prakash 7 years, 6 months ago

No when v is more than u.

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Jagdish 7 years, 6 months ago

When the object is moving forward then the acceleration is positive.

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What is Nucleon first law of motion

Posted by Jay Prakash Acharya 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Jagdish 7 years, 6 months ago

If a body is at rest or in motion then it will remain at rest or in motion until an external unbalanced force does not act upon it

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Krishna Gogia 7 years, 6 months ago

A body at rest will remain at rest and body will rain at rest and it continues with straight line uniform speed

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Whats is boiling point of alchol

Posted by Priyanshu Singh 7 years, 6 months ago

CBSE > Class 09 > Science

3 answers

Kuldeep Singh 7 years, 6 months ago

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Parthiv Patel 7 years, 6 months ago

78.37 degree celcius

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Aspin Sasmal 5 years, 11 months ago

100

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Why does the level of water not change when common salt is dissolved in wster

Posted by Anish Thakur 7 years, 6 months ago

CBSE > Class 09 > Science

3 answers

Kuldeep Singh 7 years, 6 months ago

Because particles have space between them

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Sonali Aggarwal 7 years, 6 months ago

Common salt dissolves in water i.e. its atoms occupy the spaces in the water molecules.

Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions.

Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.

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Anish Thakur 7 years, 6 months ago

Because salt dissolve in it

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Is rain wood is a pure substance

Posted by Viahal Thakur 7 years, 6 months ago

CBSE > Class 09 > Science