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what is meristematic tissues

Posted by Arya Anand 5 years ago

CBSE > Class 09 > Science

2 answers

Divya Gupta 5 years ago

The growth of plants occurs only in certain specific region.This is because the dividing tissue,also known as meristematic tissue,is located only at this points.Depending on the region where they present,meristematic tissue are classified as apical,lateral and intercalary

Ash Greninja 5 years ago

The meristem is a type of tissue found in plants. It consists of undifferentiated cells capable of cell division. Cells in the meristem can develop into all the other tissues and organs that occur in plants.

ANSWER

Difference between permanent Tissue and complex Tissue

Posted by Rengavadivelammal .C 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Ayush Saluja 5 years, 1 month ago

Simple permanent tissue is made up of one type of group of cells whereas complex tissue is made up of different type of group of cells joining together and making a one tissue

ANSWER

Explain the neuron tissue with diagram

Posted by Rengavadivelammal .C 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Aarushi Erande 5 years ago

The neuron tissue has 3 parts i.e. dendrites, axon and nerve endings. The dendrites receive messages, the axon takes the message away and nerve endings pass on the messages to other nerves. Diagram is there on google.

ANSWER

Write the mathamatical formula of second law of motion

Posted by Pradeep Mehta 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Keshav Kumar 5 years ago

FORCE=M×A

Dakshal Chauhan 5 years, 1 month ago

F=ma

ANSWER

Why the luggage is tied on roof of bus?

Posted by Pradeep Mehta 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Keshav Kumar 5 years ago

If luggage is kept untied on the roof of a bus starts and accelerates the bus, the luggage will try to maintain its rest position due to intertia of rest...

ANSWER

Gagsy

Posted by Chetan Katara 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Krish Achra? 5 years, 1 month ago

Ggegy

Chetan Katara 5 years, 1 month ago

Egegey

ANSWER

Give the Newton's mathematical law of expression

Posted by Bhawana Singh 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Gaurav Seth 5 years, 1 month ago

Newton's third law of motion states that every action has equal and opposite reaction.

If F_ABis a force of body A acting on B and F_BA is force by B on body A.

The mathematical expression is given by,

F_AB = - F_BA

where, F_AB is an action on B while F_BA is reaction of body B on A. Negative sign indicates that force acting on body A is in opposite direction to the force which is acting on body B.

Diwakar Roy 5 years, 1 month ago

F = ma

ANSWER

Which part of the cell is permeable

Posted by Sakshi Vashisht 5 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Suraj Burnwal 5 years ago

Plasma membrane

Rachit Kumar 5 years, 1 month ago

Cell wall

Harsh Baitha 5 years, 1 month ago

Plasma membrane

ANSWER

Explain the meristamatic with its functions

Posted by Rengavadivelammal .C 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

Functions: It helps in growth in length and formation of primary tissues.
(ii) Intercalary: It is found above or below stem nodes and leaf bases.
Functions: It helps in growth of internodes, growth in leaves and correction of position in lodged stems.
(iii) Lateral:

(a) Phellogen (Cork cambium): It develops from hypodermis in stems and pericycle in roots. Function: Formation of protective cork (phellem) and aerating lenticles on the outside and secondary cortex (phelloderm) on the inner side.

(b) Vascular Cambium: In stem form intra-fascicular cambial strips and interfascicular strips. In root from conjuctive parenchyma and pericycle. Function: Formation of secondary phloem on outside and secondary xylem on inner side. Vascular rays are formed at intervals for radial conduction.

ANSWER

What is tetra atomic?

Posted by Jayant Jaiswal 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 1 month ago

The molecules of many elements are composed of four atoms of that element. They are termed as tetra atomic For instance, P₄, SO₃. So their atomicity is 4.

ANSWER

Graph of s=ut+(1/2)at^

Posted by Likhith Manohar Vadapalli 5 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Mention the solute and the solvent in tincture of iodine

Posted by Diksha Gaba 5 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Muskan Gupta 5 years, 1 month ago

Iodine is solute and alcohol is solvent

Yogita Ingle 5 years, 1 month ago

In the tincture of iodine, the solvent is alcohol and water while the solute is iodine. Tincture of iodine is also known as a weak iodine solution or iodine tincture. Iodine tincture is an antiseptic used to disinfect the wounds. The structure of the iodine tincture is 2 to 7 % of the iodine and the remaining is either Sodium or potassium iodide.

Pradeep Mehta 5 years, 1 month ago

Solute is Iodine whereas solvent is alcohol

ANSWER

Explain the different types of connective tissue?

Posted by Rengavadivelammal .C 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Rengavadivelammal .C 5 years, 1 month ago

Tagsgs

Rengavadivelammal .C 5 years, 1 month ago

THE CONNECTIVE TISSUE CONSISTS OF DIFFERENT TYPES OF CELLS, ALL OF THEM PERFORM SAME FUNCTIONS

ANSWER

An object which has the three types of motion i.e. straight,circular & periodic motion?

Posted by Pari Kansal 5 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Define the terms and give one example of bileteral symmtery, coelom,triploblastic

Posted by Kanak Kokash 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Palak Lakhotiya 5 years, 1 month ago

Platyhelminths

ANSWER

Osmosis is a special kind of diffusion. Explain this

Posted by Aditya Shukla 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 5 years, 1 month ago

Diffusion is the process in which molecules of a substance move from the place of their higher concentration to the place of their lower concentration (no membrane is required). But during osmosis, the solvent (water) molecules move from the place of their higher concentration to the place of their lower concentration through a semi-permeable membrane. Thus, osmosis is termed as a special kind of diffusion.

Mahi Kumar 5 years, 1 month ago

Yea

ANSWER

Ans. Of ch. 6 tissue (science) no. 3

Posted by Tamanna Patel 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Tamanna Patel 5 years ago

Please give ans. Of my questions

ANSWER

What are the factors of diffusion ?

Posted by Nayan Mahawar 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Vidhi Srivastav 5 years, 1 month ago

several factors affect the rate of diffusion: Extent of the concentration gradient: The greater the difference in concentration, the more rapid the diffusion. The closer the distribution of the material gets to equilibrium, the slower the rate of diffusion becomes. Mass of the molecules diffusing: Heavier molecules move more slowly; therefore, they diffuse more slowly. The reverse is true for lighter molecules. Temperature: Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion. Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion. Solvent density: As the density of a solvent increases, the rate of diffusion decreases. The molecules slow down because they have a more difficult time getting through the denser medium. If the medium is less dense, diffusion increases. Because cells primarily use diffusion to move materials within the cytoplasm, any increase in the cytoplasm’s density will inhibit the movement of the materials. An example of this is a person experiencing dehydration. As the body’s cells lose water, the rate of diffusion decreases in the cytoplasm, and the cells’ functions deteriorate. Neurons tend to be very sensitive to this effect. Dehydration frequently leads to unconsciousness and possibly coma because of the decrease in diffusion rate within the cells. Solubility: As discussed earlier, nonpolar or lipid-soluble materials pass through plasma membranes more easily than polar materials, allowing a faster rate of diffusion. Surface area and thickness of the plasma membrane: Increased surface area increases the rate of diffusion, whereas a thicker membrane reduces it. Distance travelled: The greater the distance that a substance must travel, the slower the rate of diffusion. This places an upper limitation on cell size. A large, spherical cell will die because nutrients or waste cannot reach or leave the center of the cell. Therefore, cells must either be small in size, as in the case of many prokaryotes, or be flattened, as with many single-celled eukaryotes. A variation of diffusion is the process of filtration. In filtration, material moves according to its concentration gradient through a membrane; sometimes the rate of diffusion is enhanced by pressure, causing the substances to filter more rapidly. This occurs in the kidney where blood pressure forces large amounts of water and accompanying dissolved substances, or solutes, out of the blood and into the renal tubules. The rate of diffusion in this instance is almost totally dependent on pressure. One of the effects of high blood pressure is the appearance of protein in the urine, which is “squeezed through” by the abnormally high pressure.

ANSWER

State two ways in which phleom is functionally different from xylem

Posted by Gourav Kashyap 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Vidhi Srivastav 5 years, 1 month ago

Phloem helps in transportation of food and nutrients from leaves to storage organs whereas xylem transports water and minerals from roots to aerial parts of plant. -Phloem provided no mechanical function whereas xylem provides mechanical support. - Phloem has bidirectional movements whereas xylem has single direction movements

ANSWER

Describe the states of matter

Posted by Payal Priyadarsini 5 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Chaitanya Varma 5 years, 1 month ago

Solid ,liquid and gaseus

Nayan Mahawar 5 years, 1 month ago

The matter has been classified in three different states : -solid -liquid -gas And there are two more states Plasma Bose Einstein condensate

Divyanshu Mishra 5 years, 1 month ago

There are three states of matter Solid Liquid Gas

Shreya Singh 5 years, 1 month ago

Three states of matter Solid, Liquid and gas

Aditya Sahu 5 years, 1 month ago

Three types of matters solid, liquid and gas

ANSWER

Which causes more burn steam or boiling water

Posted by Minku Rani 5 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Divya Gupta 5 years, 1 month ago

Steam

Palak Lakhotiya 5 years, 1 month ago

Steam

Payal Priyadarsini 5 years, 1 month ago

Stem

Minku Rani 5 years, 1 month ago

Steam

ANSWER

What is function of stomach

Posted by Kunal Singh 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 5 years, 1 month ago

It serves as a muscular bag which is situated towards the left side of the abdominal cavity, beneath the diaphragm. This vital organ acts as a storage for the food and provides enough time to digest meals. The stomach also produces digestive enzymes and hydrochloric acid that maintains the process of digestion.

Mucous: It is an aqueous secretion produced by the mucous membranes. It functions by protecting the stomach lining and gastric pits from the acid, which is produced by the glands to destroy the bacteria that entered along with the food particles.
Digestive enzymes: They are the group of enzymes which functions by breaking down polymeric macromolecules like biopolymers into their smaller and simpler substances.
Hydrochloric acid: It is the digestive fluid formed by the stomach during the process of digestion. It functions by destroying harmful microorganisms present in the food particles.

Aditya Sahu 5 years, 1 month ago

The core functions of the human stomach is as an aid to digestion

ANSWER

What is antibiotics ?

Posted by Aman Mishra 5 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Keshav Kumar 5 years ago

The medicine which kill or stop growth of harmful microorganisms in our body is known as Antibiotics....

Shreya Singh 5 years, 1 month ago

The medicines which kill or stop the growth of microorganisms in our body are Known as Antibiotics.

S . Maha Gowri 5 years, 1 month ago

The medicines which kill or stop the growth of microorganisms in our body are known as ANTIBIOTICS . These are very useful to us as they prevent us from the effects of microorganisms . Antibiotics are made up of fungi and bacteria .

ANSWER

Names of 10 matter ?

Posted by Aman Mishra 5 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Keshav Kumar 5 years ago

Abe matter vo sab chiz h jisme mass aur space ho... Like book

Aditya Sahu 5 years, 1 month ago

Sand ,dog,cat,lion,chair,milk,apple,human ,insects, fish

Anshika Soni 5 years, 1 month ago

Chair ,book, air , table, pen brush, biscuit, comb, pencil , mobile

ANSWER

What is stomach ?

Posted by Aman Mishra 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

The stomach is a thick-walled bag. Its shape is like a flattened U and it is the widest part of the alimentary canal. It receives food from the food pipe at one end and opens into the small intestine at the other. The inner lining of the stomach secretes mucous, hydrochloric acid and digestive juices.

ANSWER

Part of two cell?

Posted by Aman Mishra 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Harsh Baitha 5 years, 1 month ago

Mitochondria and nucleus are the main two part of the cell which found both in plant and animal cell.

ANSWER

What is Kinetic energy ??????

Posted by S . Maha Gowri 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

Kinetic energy is the energy possessed by a body by virtue of its motion. All moving bodies have kinetic energy. A body of mass m moving with a velocity v has a kinetic enegy E = ½ mv². Note that kinetic energy is always positive.

Alternately we can define K.E as follows.
The work done by a body by virtue of its motion is called kinetic energy.

ANSWER

What is chromosome????

Posted by S . Maha Gowri 5 years, 1 month ago

CBSE > Class 09 > Science

4 answers

S . Maha Gowri 5 years, 1 month ago

Thank you so much Guys ????

Yogita Ingle 5 years, 1 month ago

Chromosomes are thread-like structures present in the nucleus, which carries genetic information from one generation to another. They play a vital role in cell division, heredity, variation, mutation, repair and regeneration.

Cm| Black Bolt 5 years, 1 month ago

Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.

Fatin Abeer 5 years, 1 month ago

A part of a cell in living things that decides the ***, character, shape, etc. that a person, an animal or a plant will have.

ANSWER

Under what condition the change in velocity of the object for any time interval is zero?

Posted by Siddhesh Wagh 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Vaishnavi Shukla 5 years, 1 month ago

During uniform motion

Sumit Soni 5 years, 1 month ago

When body move with uniform velocity

ANSWER

What is the slope of position time graph give

Posted by Vinod Kumar 5 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Vaishnavi Shukla 5 years, 1 month ago

Acceleration

Sumit Soni 5 years, 1 month ago

Distance or displacement

Nirmal Bafna 5 years, 1 month ago

accelaration

ANSWER

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