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Because 1) Electric impulses will only reach those cells connected by nervous tissue. 2) After generation and transmission of impulse it will take some time to reset its mechanism . So cells cannot continually create and transmit impulse . 3) Plants do not have any nervous system.

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Mridul Tripathi 2 years, 8 months ago

In animals, the message, communicated in the form of nerve impulses, from receptors (sensory neurons) to central nervous system and from latter to the effectors (muscles and glands) is very quick. The nervous coordination in animals, however, has certain limitations. For instance, (i) Nerve impulses can reach only those animal cells which are connected by nervous tissue, and (ii) such cells, after generation and transmission of nerve impulses, take some time to reset their mechanisms before a new impulse is generated and transmitted. In other words, cells can not continuously generate and transmit electrical impulses. This is the reason why most multicellular organisms use another means of communication between cells, commonly termed In animals, the message, communicated in the form of nerve impulses, from receptors (sensory neurons) to central nervous system and from latter to the effectors (muscles and glands) is very quick. The nervous coordination in animals, however, has certain limitations. For instance, (i) Nerve impulses can reach only those animal cells which are connected by nervous tissue, and (ii) such cells, after generation and transmission of nerve impulses, take some time to reset their mechanisms before a new impulse is generated and transmitted. In other words, cells can not continuously generate and transmit electrical impulses. This is the reason why most multicellular organisms use another means of communication between cells, commonly termed Chemical communication

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Mridul Tripathi 2 years, 8 months ago

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ANSWER

What is plasmodium

Posted by Shivi Singh 2 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Abhishek Daive 2 years, 8 months ago

Plasmodium is malarial parasite it reproduce by multiple fission

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Aditya Sharma 2 years, 8 months ago

It is the example of multiple fission in which single nucleus divides in several daughter nuclei and each nuclei live its life like a new individual

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Ridhi Raj 2 years, 8 months ago

Plasmodium is an example of multiple fisson

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Mridul Tripathi 2 years, 8 months ago

Plasmodium is an animal which is the career of malaria. It posses parasitic mode of nutrition and asexual mode of reproduction especially multiple fission.

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Shivi Singh 2 years, 8 months ago

Plasmodium is a Part of algae

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ANSWER

How does the body maintain the number of chromosomes in the nucleus ??? Or What is Meiosis ???

Posted by Parthiv Gupta 2 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Mridul Tripathi 2 years, 8 months ago

Meiosis occurs in sexual reproduction it is introduction and division of male and female

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K. Hema 2 years, 8 months ago

The other type of cell division, meiosis, ensures that humans have the same number of chromosomes in each generation. It is a two-step process that reduces the chromosome number by half—from 46 to 23—to form sperm and egg cells.

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Define the atomic size

Posted by Rohan Dangi 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

K. Hema 2 years, 8 months ago

Atomic size is the distance between the centre of the nucleus of an atom and its outermost shell.

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ANSWER

How to find the isomers of alkene and alkyne

Posted by Kishan Studios 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

K. Hema 2 years, 8 months ago

As with alkenes, alkynes display structural isomerism beginning with 1-butyne and 2-butyne. However, there are no geometric isomers with alkynes, because there is only one other group bonded to the carbon atoms that are involved in the triple bond.remember the general formula.

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How to identify which hormone is secreted by giving an example of squirrel in a scary situation?

Posted by Khushi Patel 2 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Sadkeen Zarrin 2 years, 8 months ago

Adrenaline

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Taniya . 2 years, 8 months ago

Adrenaline is a hormone released by the adrenal glands.The hormone is also known as the fight and flight hormone.When a squirrel gets into that situation, due to stress, tension, etc., his body starts releasing the hormone which helps him to respond quickly by running or fighting.

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Kehan Gilani 2 years, 8 months ago

It's adrenaline hormone, which is released during this type of situation, the process is called adrenaline rush.

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What is islets of Langerhans?

Posted by Khushi Patel 2 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Mridul Tripathi 2 years, 8 months ago

Islets of langerhans are those cells which produces two types of hormones present in pancreas It's Alpha cell secrets Glucagon where as, Beta cells secrets Insulin.

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Taniya . 2 years, 8 months ago

The islets of Langerhans are a cluster of cells within the pancreas that are responsible for the production and release of hormones that regulate glucose levels.

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ANSWER

What is the colour of German silver

Posted by Deepak Sharma 2 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Nikhil Maurya 2 years, 8 months ago

Silver

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Saad Kazi 2 years, 8 months ago

White-ish

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Deepak Sharma 2 years, 8 months ago

White hota ha

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Raj Soni 2 years, 8 months ago

Prove that:tan÷1-cotQ+cotQ÷1-secQ

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Mrutyunjaya Pati 2 years, 8 months ago

Silver

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ANSWER

Can I score more than 90 now

Posted by Ojas Yadav 2 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Dev Sharma 2 years, 8 months ago

Jitna time puchne m laga rha h usese jada ans de in sare logo ka aur paper solve kr le bs Tera fayda ho jayega itne m.

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Dev Sharma 2 years, 8 months ago

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Mrutyunjaya Pati 2 years, 8 months ago

Nooo not at all read fast stop wasting time here

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Deepak Sharma 2 years, 8 months ago

Yes

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Kusum Jakhar 2 years, 8 months ago

Why not

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which mosquito is cause plasmodium

Posted by Narendra Rana 2 years, 8 months ago

CBSE > Class 10 > Science

4 answers

Aisha Naved 2 years, 8 months ago

Female anopheles Mosquito

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Dev Sharma 2 years, 8 months ago

Female anopheles mosquito

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Chandan Jha 2 years, 8 months ago

Female anopheles mosquito

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Keerti Mishra 2 years, 8 months ago

Female mosquito

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Assalamualaikum

Posted by Ariba Aleem 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Mohd Ahtesham 2 years, 8 months ago

Walaikum assalam Bhai Jaan

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ANSWER

In light reaction pastoquinone facilitates the transfer of electrons from ?

Posted by Himanshi Verma 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Taniya . 2 years, 8 months ago

PQ facilitates the transfer of electrons from PS II to cyt b6f and PC from cyt b6f to PS I.

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ANSWER

Observe the two chemical equations given below. P) Ca(OH)2 + HNO3 -----> Ca(NO 3)2 + H2O Q) KBr + AgNO3 -----> KNO3 + AgBr (a) Explain how a balanced equation can be identified. (b) Which of the two equations is/are NOT balanced? Balance the equation(s) by rewriting. 3

Posted by Reet Kaur 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Prince Sharma 2 years, 8 months ago

(a) An equation of chemical reaction is said to be balanced if there are same number of atoms of an element on both sides of arrow. Since mass can neither be created nor destroyed in a chemical reaction. (b) Equation 'P' is unbalanced equation. Balanced equation for the same is:- Ca(OH)² + 2H(NO)³ ------> Ca(NO³)² +2H²O

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ANSWER

Which gas is liberated when an acid react with a metal? Illustrate with an example. How will you test for the presence of this gas

Posted by Nusrat Khatun 2 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Daksh Jain 2 years, 8 months ago

Hydrogen gas is release when acid is react with metal for example: Zn +HCL =ZnCl +H2 . To test the hydrogen gas: we can take one breaker in soap solution paas the gas through soap solution and then take burning candle near the solution when gas is release to make pop sound

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Kiran Rawat 2 years, 8 months ago

Thanks

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Himanshi Verma 2 years, 8 months ago

Hydrogen gas is released when an acid react with metal. Eg- Zn + H2so4 = Znso4 + H2 This gas can be tested by bringing a burning candle on test tube's mouth where above rxn has took place. It produces a POP sound.

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Arpit Sahu 2 years, 8 months ago

Acids + Metals → Salt + Hydrogen gas. Example: Hydrogen gas is produced when dilute combines with zinc metal

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Lavish Sharma 2 years, 8 months ago

Hydrogen gas liberated when acid reacts with metal . Zn + 2HCl ----› ZnCl2 + H2 Test of this gas is bring burning matchstick in touch of this gas and is burns with pop sound.

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ANSWER

Why carbon. Is tetravalent

Posted by Ritik Arora 2 years, 8 months ago

CBSE > Class 10 > Science

4 answers

Aditya Sharma 2 years, 8 months ago

Because it has tendency of loss of 4 electron or gain 4 electron that why it is called tetravalency

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Prince Sharma 2 years, 8 months ago

Atomic number of Carbon is 6, and it's electronic configuration of electrons is 2,4. Due to four electrons in its outermost shell it is said to be 'tetravalent', 'tetra' is a Greek word which means four.

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Himanshi Verma 2 years, 8 months ago

Carbon is tetravalent because it has 4 electrons in its outermost shell have electronic configuration of 2,6

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Omya Aryan 2 years, 8 months ago

Because it has the tendency to share electron.

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ANSWER

What is the use of Crystal tube

Posted by Sooraj Hathwar 2 years, 7 months ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 2 years, 7 months ago

They function in an array of applications, including laboratories, semiconductors, sight gages, optics, pharmaceutical and industrial processes.

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ANSWER

Why are Bubbles formed in soap solution

Posted by Sooraj Hathwar 2 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Himanshi Verma 2 years, 8 months ago

Bubbles are formed due to presence of hydrogen gas.

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Ritik Arora 2 years, 8 months ago

Beacuse of micelle formation

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Sooraj Hathwar 2 years, 8 months ago

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ANSWER

If a student is sitting at last bench of class and he can clearly distant objects but when he sits at the first bench he can't see board properly. What lens he prefer now?

Posted by Datta Nikhil 2 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Manas Sharnagat 2 years, 8 months ago

Concave lens

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Sooraj Hathwar 2 years, 8 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
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0Thank You

Sooraj Hathwar 2 years, 8 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
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Harshit Gupta 2 years, 8 months ago

Concave lens

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Harshit Singh 2 years, 8 months ago

Concave lens

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ANSWER

Electric motor is deleted or not for 2023 board exam

Posted by Fidha Sunil 2 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Arpit Sahu 2 years, 8 months ago

Yes delete

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Ayush Mishra 2 years, 8 months ago

Deleted

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Sooraj Hathwar 2 years, 8 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
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Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

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Harshit Singh 2 years, 8 months ago

Deleted

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Shashank Shukla 2 years, 8 months ago

Deleted

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ANSWER

Define term electro conductivity

Posted by Rita K 2 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Arpit Sahu 2 years, 8 months ago

Conductivity of a metallic wire is defined as its ability to allow electric charges or heat to pass through it

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Manik Chauhan 2 years, 8 months ago

Electrical resistivity is a fundamental property of a material that measures how strongly it resists electric current

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ANSWER

Dentist uses mirror to see inside patient mouth which is different from the one used at homes which mirror was used by dentist

Posted by Roshan Kumar 2 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Aisha Naved 2 years, 8 months ago

Dentist use concave mirror to obtain a larger image of our teeth. The mirror used in our home is plane mirror

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Datta Nikhil 2 years, 8 months ago

House mirrors are plane mirror where as the mirror used by the dentist is concave he uses only concave because concave mirror makes the small things larger so that it visible larger

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Kshitiz Bhardwaj 2 years, 8 months ago

Both are concave

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ANSWER

What is autropic nutrition ?

Posted by Vidhi Singh 2 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Kusum Jakhar 2 years, 8 months ago

Organisms who make their own food and do not depend on others

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Himanshi Verma 2 years, 8 months ago

It's a nutrition process performed by organisms who can make their own food. Eg- Green plants, Blue Green Algae

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Dinali Taidong 2 years, 8 months ago

Autotrophic nutrition is a process where an organism prepares its own food from a simple inorganic materials like water, mineral salts and carbon dioxide in the presence of sunlight.

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ANSWER

Important terms of biology

Posted by Devraj Sharma 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Muskan Yadav 2 years, 8 months ago

From lifeprocesses - Nutrition ,respiration ,transportation and excreation In both animals and plants Control and coordination - Neuron ,synapse ,brain and its parts ,CNS ,hormones in both plants and animals Reproduction - Asexual reproduction ,dna copying ,sexual reproduction (male and female reproductive parts and reproductive health ) Heridity - Traits (acquired and inherited ) Mendel's experiment (homzygous and hetrozygous both) Our environment Ecosystem ,food web and chain ,tropic levels 10 %law ,biological magnification ozone depletion ,garbage and its managment

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Important tern in ch 4 carbon and it's compound

Posted by Devraj Sharma 2 years, 8 months ago

CBSE > Class 10 > Science