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Nikhil Avatade 5 years, 4 months ago

Stem cells

Amir Rahmani 5 years, 4 months ago

Gonadic cells are not divide

Diwakar Khandelwal 5 years, 4 months ago

Neurons, fat cells, skeletal and cardiac muscle cells, mature bone cells, retinal receptor cells, and most mature blood cells are the cells of human body which do not divide

Yogita Ingle 5 years, 4 months ago

Once being differentiated, nerve cells do not divide as they lack mitotic activity.lack mitotic activity indicates that they do not have centrosome.

ANSWER

How are the condensed chromosomes obtained for the study of their morphology?

Posted by Diwakar Khandelwal 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Meghna Thapar 5 years, 4 months ago

Chromosome are composed of thin chromatin threads called chromatin fibers. Each species has a definite chromosome number, represented by 2n. Somatic cells contains two copies of each chromosomes, which are identical in morphology, gene content and gene order and they are known as homologous chromosomes.

ANSWER

How do the children of the same parent differ among themselves and also from the parents in certain features?

Posted by Diwakar Khandelwal 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Meghna Thapar 5 years, 4 months ago

The transmission of characteristics from parents to offspring is called heredity, and the characteristics that are inherited can be predicted. Reginald Punnett contributed much to the science of genetics when he designed a method of predicting traits as he was studying poultry genetics. Looking more like one parent or the other is dependent on the gene versions each parent has. And which ones happen to get passed down. We have two copies of each of our chromosomes and so have two copies of each of our genes.

ANSWER

What is the most suitable time to determine the number of chromosomes and study their morphology?

Posted by Diwakar Khandelwal 5 years, 4 months ago

CBSE > Class 11 > Biology

3 answers

Jagrit Kandhari 5 years, 4 months ago

During the metaphase it is possible to study the morphology of chromosomes

A D 5 years, 4 months ago

Metaphase

Meghna Thapar 5 years, 4 months ago

Chromosomes are the rod-shaped ,filamentous bodies present in the nucleus, which become visible during cell division.  They are carriers of the gene or unit of heredity. There are four main types of chromosomes: metacentric, submetacentric, acrocentric, and telocentric. Chromosomes are found within the nucleus of most living cells and consist of DNA that is tightly wound into thread-like structures.

ANSWER

How can you determine that a dividing cell you are seeing under a microscope is of an animal or a plant??

Posted by Diwakar Khandelwal 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Meghna Thapar 5 years, 4 months ago

Under a microscope, plant cells from the same source will have a uniform size and shape. Beneath a plant cell's cell wall is a cell membrane. An animal cell also contains a cell membrane to keep all the organelles and cytoplasm contained, but it lacks a cell wall. A difference between plant cells and animal cells is that most animal cells are round whereas most plant cells are rectangular. Plant cells have a rigid cell wall that surrounds the cell membrane. Animal cells do not have a cell wall.

ANSWER

What is vegetative character

Posted by Ravindra Kumar 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 5 years, 4 months ago

Vegetative characters – roots, stem and leaves and then floral characters inflorescence and flower parts.

ANSWER

What is plasmids

Posted by Vaishnavi Singh 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 5 years, 4 months ago

A plasmid is usually a circular (sometimes linear) piece of double-stranded DNA found in bacteria that is different from bacterium’s chromosome. It carries non-essential genes that can augment a bacterium’s ability to survive in certain circumstances.
For example, plasmids carry genes that enable a bacterium to metabolise a certain type of nutrient otherwise it cannot enable to conjugate. Plasmids are used for a vast variety of experiments from expressing human genes in bacterial cells to DNA sequencing.

ANSWER

Why are living organisms clasdified

Posted by Sonia Rajput 5 years, 4 months ago

CBSE > Class 11 > Biology

2 answers

Shreya Rawat 5 years, 4 months ago

It is because there are several organism exist so it is not possible to identify easily them the classification help us to identify the taxonomic hierarchy by this we came to know the characteristics features of various animals.

3Thank You

Tanya Tiwari 5 years, 4 months ago

Living organisms classified because there are several types of organisms based on different characteristics where it is difficult for us to study each organisms separatly so living organisms classified in to different kingdoms based on their similarities for easy to understanding

3Thank You

ANSWER

What is substrate

Posted by Golu Yadav Yadav 5 years, 4 months ago

CBSE > Class 11 > Biology

3 answers

Swayamjit Mohanty 5 years, 3 months ago

Substrates are nothing none other than reactants. Or we can they substrates are the molecules that acted on an enzyme.

Yogita Ingle 5 years, 4 months ago

A substance to which another substance is applied we call it as a substrate. Its definition is different in different sciences. According to biology, it is a medium on which flora, fauna or fungi lives.

Golu Yadav Yadav 5 years, 4 months ago

What is substrate

ANSWER

Plasmolysis in a plant is defined as

Posted by Ayush Kumar Singh Ayush Kumar Singh 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Shivali Thakur ? 5 years, 4 months ago

Plasmolysis is the process in which cells lose water in a hypertonic solution

ANSWER

What is diploid somatic cells?

Posted by A.A ?? 5 years, 4 months ago

CBSE > Class 11 > Biology

4 answers

Shiva Yadav 5 years, 4 months ago

Somatic cells are diploid meaning that they contain two sets of chromosomes, one inherited from each parents. Mutations in somatic cells can affect the individual, but they are not on to offspring, then they have sporophytic phase

Yogita Ingle 5 years, 4 months ago

A somatic cell is any cell of the body except sperm and egg cells. Somatic cells are diploid, meaning that they contain two sets of chromosomes, one inherited from each parent. Mutations in somatic cells can affect the individual, but they are not passed on to offspring.

A.A ?? 5 years, 4 months ago

Tnq

Aimy Kunnel 5 years, 4 months ago

Somatic cells are diploid meaning that they contain two sets of chromosomes, one inherited from each parents. Mutations in somatic cells can affect the individual, but they are not on to offspring

ANSWER

What is diploid somatic cells? ?

Posted by A.A ?? 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 5 years, 4 months ago

ANSWER

Compound microscope

Posted by Chehak .. 5 years, 4 months ago

CBSE > Class 11 > Biology

2 answers

Ayush Kumar Singh Ayush Kumar Singh 5 years, 4 months ago

Simple students microscope ,used in school is called compound microscope

A.A ?? 5 years, 4 months ago

A compound microscope is an uprightmicroscope that uses two sets of lenses (a compound lens system) to obtain higher magnification than a stereo microscope. A compound microscope provides a two-dimensional image.

ANSWER

Which organelle in our body that helps to produce proteins

Posted by Rushikesh Kadam 5 years, 4 months ago

CBSE > Class 11 > Biology

2 answers

Yogita Ingle 5 years, 4 months ago

Ribosomes are important for protein production. Together with a structure known as messenger RNA (a type of nucleic acid) ribosomes form a structure known as a polyribosome which is important in protein synthesis.

A.A ?? 5 years, 4 months ago

The endoplasmic reticulum (ER) is a large network of membranes responsible for the production of proteins.

ANSWER

Why is living organisms classified

Posted by Pratiksha Sharma 5 years, 4 months ago

CBSE > Class 11 > Biology

3 answers

Aimy Kunnel 5 years, 4 months ago

Living organisms are classified according to the variations and similarities seen between them

Rushikesh Kadam 5 years, 4 months ago

Bcos there is many living species

Yogita Ingle 5 years, 4 months ago

A large variety of plants, animals, and microbes found on earth and they differ in size, shape, colour, habitat, and many other characteristics. So, studying each of them is impossible. Therefore, scientists have devised mechanisms to classify all living organisms on certain rules and principles that allow identification, nomenclature, and finally classification of an organism.
For example, based on presence of three pairs of legs and 2 pairs of wings, an organism is identified as an insect, it will be given a scientific name and then grouped with other similar organisms. Thus, various groups or taxon include organisms based on their similarity and differences.

Therefore, the biological classification helps in revealing the relationship between various organisms. It also helps in making study of organisms easy and organized.

ANSWER

Explain sexual reproduction of bacteria????

Posted by Jasmeen Kaur 5 years, 4 months ago

CBSE > Class 11 > Biology

0 answers

ANSWER

How is epidermis of a leaf different from that of root? Explain.

Posted by Rintei Hmar 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 5 years, 4 months ago

The epidermis is an outer protective covering tissue of plant roots, leaves, and stems of nonwoody plants. It contains closely packed epidermal cells.

Modifications of epidermis of roots, stem and leaves:

Walls of epidermal cells are covered with a waxy cuticle to minimise water loss and protect against bacteria.
In roots, certain epidermal cells are modified into root hairs that increase surface area of the root for absorption of water and minerals and help to anchor the plant firmly in place.
Protective hairs of a different nature are produced by epidermal cells of stems and leaves.
Epidermal cells may be modified as glands that secrete protective substances of various types.
In leaves, particularly the lower epidermis, specialized epidermal cells (guard cells) form microscopic pores (stomata) and regulate gas exchange between interior and exterior of a leaf.

The roots, stem and leaves of plants are modified for storage of food or protection to the plant.

Root modifications
Adventitious and prop roots	E.g. Maize
Pneumatophores	E.g. Mangroves
Velamen roots	E.g. Orchids
Fleshy roots	E.g. Carrot
Stem modifications
Tendrils	E.g. Grapes
Cladophylls	E.g. Asparagus
Thorns	E.g. Bougainvillea
Storage stems	E.g. Onion bulbs
Runners/Stolons	E.g. Strawberry
Leaf modifications
Spines	E.g. Cacti
Bracts	E.g. Bougainvillea
Carnivorous leaves	E.g. Venus flytrap
Tendrils	E.g. Peas
Plantlets	E.g. Kalanchoe

ANSWER

What is study

Posted by Arnab Kumar Adhvaryyu 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Jasmeen Kaur 5 years, 4 months ago

It is the method of learn something...........,?

3Thank You

ANSWER

From now I never ask any doubts in this app.

Posted by Vaishali ..... 5 years, 4 months ago

CBSE > Class 11 > Biology

4 answers

Vaishali ..... 5 years ago

234.6666

Vaishali ..... 5 years, 3 months ago

Aimy Kunnel 5 years, 4 months ago

A.A ?? 5 years, 4 months ago

ANSWER

Hart ke kitne part hote hai

Posted by Aj Kashyap 5 years, 4 months ago

CBSE > Class 11 > Biology

4 answers

Kritika Singh Rajpoot 5 years, 4 months ago

4 chamber

Aj Kashyap 5 years, 4 months ago

With name

Pratima Dhaper 5 years, 4 months ago

Aakash Kumar 5 years, 4 months ago

4 part

ANSWER

What is oogamy

Posted by Vanee . 5 years, 4 months ago

CBSE > Class 11 > Biology

0 answers

ANSWER

What is Cybercrime

Posted by B. Rohiith B. Rohiith 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 5 years, 4 months ago

Any offenses committed against individuals or groups of individuals to harm the reputation or cause physical or mental trauma through electronic means can be defined as Cybercrime. Electronic means can include but are not limited to, the use of modern telecommunication networks such as the Internet (networks including chat rooms, emails, notice boards and groups) and mobile phones (Bluetooth/SMS/MMS).

ANSWER

Name the longest plant that are exist on the earth.

Posted by Sanjay Kumar 5 years, 4 months ago

CBSE > Class 11 > Biology

2 answers

Mohammad Ahmad 5 years, 4 months ago

Sequoia sempervirens, redwood tree

Craziness Overload 5 years, 4 months ago

Giant sequoia (250 height)

ANSWER

Which have cell wall in reproductive phase but absent in vegetative phase

Posted by Phibarisha Marwein 5 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Meghna Thapar 5 years, 4 months ago

The rigid layers of fungal cell walls contain complex polysaccharides called chitin and glucans. Chitin, also found in the exoskeleton of insects, gives structural strength to the cell walls of fungi. The wall protects the cell from desiccation and predators. ... Most members of the kingdom Fungi are nonmotile. Examples of bacteria that lack a cell wall are Mycoplasma and L-form bacteria. Mycoplasma is an important cause of disease in animals and is not affected by antibiotic treatments that target cell wall synthesis. Mycoplasma acquire cholesterol from the environment and form sterols to build their cytoplasmic membrane.

ANSWER

Pls tell me?what is the nature of cell walls in diatoms? ???

Posted by Vaishali ..... 5 years, 4 months ago

CBSE > Class 11 > Biology

3 answers

Vaishali ..... 5 years, 4 months ago

????????

Vaishali ..... 5 years, 4 months ago

?????????

Vaishali ..... 5 years, 4 months ago

???????????

ANSWER

What is an imp question in chapter 1

Posted by Anjali Yadav 5 years, 4 months ago

CBSE > Class 11 > Biology

3 answers

Anjali Yadav 5 years, 3 months ago

Yes

Vaishali ..... 5 years, 4 months ago

Why are living organisms classified? OK

Anjali Yadav 5 years, 4 months ago

Please answer quickly

ANSWER

What is G1 phase of interphase

Posted by Kush Rathee 5 years, 4 months ago

CBSE > Class 11 > Biology

3 answers

Anjali Yadav 5 years, 4 months ago

Thanx

Soumili De 5 years, 4 months ago

G1 Phase is the First Growth Phase or Post Mitotic Gap Phase. During this phase the cell grows in size and active synthesis of RNA takes place. Cells carries out physiological functions and prepares the machinery needed for the cell to proceed to next stage. A large no. of nucleotides , amino acid for histone synthesis and energy rich compounds are formed. Cell oraganelles also increases in number but it shows no change in its DNA content.

Gaurav Seth 5 years, 4 months ago

A n s w e r :
G 1 phase ( Gap 1 ) : During this phase, the cell is metabolically active and continuously grows and prepares its D N A for r e p lication .

ANSWER

What is antibiotics ??

Posted by ꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 4 months ago

CBSE > Class 11 > Biology

5 answers

꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 4 months ago

Koi kuch Mt KR naa please ab nee karu ha

꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 4 months ago

[tex]<svg width="5000" height="5000" viewBox="0 0 100 100">\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ <path fill="red" d="M92.71,7.27L92.71,7.27c-9.71-9.69-25.46-9.69-35.18,0L50,14.79l-7.54-7.52C32.75-2.42,17-2.42,7.29,7.27v0 c-9.71,9.69-9.71,25.41,0,35.1L50,85l42.71-42.63C102.43,32.68,102.43,16.96,92.71,7.27z"></path>\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ <animateTransform \ \textless \ br /\ \textgreater \ attributeName="transform" \ \textless \ br /\ \textgreater \ type="scale" \ \textless \ br /\ \textgreater \ values="1; 1.5; 1.25; 1.5; 1.5; 1;" \ \textless \ br /\ \textgreater \ dur="2s" \ \textless \ br /\ \textgreater \ repeatCount="40"> \ \textless \ br /\ \textgreater \ </animateTransform>\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ </svg>[/tex]

꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 4 months ago

[tex] <html lang="en"> <head> <title>Shinchan</title> </head> <body> <div class="face"> <div class="forhead"></div> <div class="cheeks"></div> <div class="ear"></div> <div class="eyebrow left"></div> <div class="eyebrow right"></div> <div class="eye left"></div> <div class="eye right"></div> <div class="mouth"></div> <div class="shy"></div> <div class="shy right"></div> </div> <style> body { background:#3e505e } .face { height: 600px; width: 350px; position: relative; margin: auto; } .face:before { content:''; background:black; height:122px; width:95px; position:absolute; z-index:6; left:210px; top:29px; border-radius:100% 190% 100% 0%; transform: rotate(-20deg); } .face:after { content:''; width:230px; height:180px; background:black; content:''; transform: rotate(-8deg); position:absolute; border-radius:100% 160% 100% 0%; left:70px; bottom:-14px; top:10px; z-index:5; } .forhead, .forhead:after { content: ''; width: 220px; height: 181px; background: #fbc6a3; content: ''; transform: rotate(-3deg); position: absolute; border-radius: 60% 120% 50% 0%; left: 67px; bottom: -14px; top: 21px; z-index: 6; } .forhead:after { width: 160px; height: 150px; border-radius: 150% 174% 159% 100%; transform: rotate(-20deg); top: 13px; left: 59px; border-top: 15px solid #fbc6a3; } .forhead:before{ background:#fbc6a3; width:60px; height:10px; content:''; position:absolute; z-index:7; left:105px; top:9px; transform: rotate(13deg); border-radius:100% } .ear { width:60px; height:50px; background:#fbc6a3; z-index:7; position:absolute; border-radius:300% 190% 200% 100%; transform: rotate(-20deg); top:110px; left:285px } .cheeks { background: #fbc6a3; width: 280px; height: 100px; border-radius: 50px 0px 50px 40px; transform: rotate(-3deg); position: relative; content: 'a'; top: 108px; left:10px } .cheeks:after { width: 297px; height: 100px; background: #fbc6a3; content: ''; transform: rotate(-3deg); position: absolute; border-radius: 100% 100% 100% 100%; left: 1px; bottom: -14px; } .eye { width:40px; height:40px; position:relative; background:black; border-radius:100%; animation: close-eye 4s none .2s infinite; } .eye:after { content:''; position:absolute; background:white; width:15px; height:15px; border-radius:100%; left:17px; top:12px; } .eye:before { content:''; position:absolute; width:70px; height:60px; border-radius:100%; border-top:2px solid black; left:-20px; margin-top:-20px; } .eye.left,.eye.right { position:absolute; top:80px; left:100px; z-index:10; } .eye.right { left:190px; top:90px; } .eyebrow { animation: eyebroani 2s linear .2s infinite; } .eyebrow,.eyebrow:after { position:absolute; width:20px; height:60px; background:black; z-index:8; border-radius:15px; transform: rotate(40deg); top:10px; left:90px; } .eyebrow:after { content:''; transform: rotate(-100deg); left:19px; margin-top:-23px; top:auto; } .eyebrow.right { left:180px; top:8px; transform: rotate(50deg); } .mouth { position:absolute; width:40px; height:40px; background:#76322f; border-radius:100%; top:180px; left:50px; z-index:8; } .shy { position:absolute; width:0px; height:0px; border-radius:100%; opacity:0; box-shadow: 0px 0px 40px 20px red; z-index:8; left:35px; top:160px; animation: shy 10s linear .2s infinite; } .shy.right { left:170px; top:180px; } @keyframes eyebroani { 0% {margin-top:auto} 10% {margin-top:-10px} 20% {margin-top:auto} 30% {margin-top:-10px} 40% {margin-top:auto} 100% {margin-top:auto} } @keyframes shy { 0% {opacity:0} 10% {opacity:0.2} 90% {opacity:0.2} 100% {opacity:0} } @keyframes close-eye { 0% { height: 40px; margin-top: auto; overflow: auto; } 5% { height: 2px; margin-top: 20px; overflow: hidden; } 5.1% { height: 40px; margin-top:0; overflow:visible; } } </style> </body> </html>[/tex] \huge \bold \pink{its \: shinchan \: code}"

꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 4 months ago

[tex] <html lang="en"> <head> <title>CUBE</title> </head> <body> <div class="container"> <div id="cube"> <div class="front">pls</div> <div class="back">follow</div> <div class="right">me</div> <div class="left">❣️</div> <div class="top">❣️</div> <div class="bottom">❣️</div> </div> </div> <style> body { padding-left: 30%; padding-top: 5%; } .container { width: 200px; height: 200px; position: relative; -webkit-perspective: 1000px; -moz-perspective: 1000px; } #cube { width: 100%; height: 100%; position: absolute; -webkit-transform-style: preserve-3d; -webkit-animation: rotatecube 10s infinite; -moz-transform-style: preserve-3d; -moz-animation: rotatecube 10s infinite; } #cube div { width: 200px; height: 200px; display: block; position: absolute; border: none; line-height: 200px; text-align: center; font-size: 50px; font-weight: bold; } @-webkit-keyframes rotatecube { 0% { -webkit-transform: rotateX(0deg) rotateY(360deg) rotateZ(90deg); } 25% { -webkit-transform: rotateX(90deg) rotateY(270deg) rotateZ(180deg); } 50% { -webkit-transform: rotateX(180deg) rotateY(180deg) rotateZ(0deg); } 75% { -webkit-transform: rotateX(270deg) rotateY(90deg) rotateZ(360deg); } 100% { -webkit-transform: rotateX(360deg) rotateY(0deg) rotateZ(270deg); } } @-moz-keyframes rotatecube { 0% { -moz-transform: rotateX(0deg) rotateY(360deg) rotateZ(90deg); } 25% { -moz-transform: rotateX(90deg) rotateY(270deg) rotateZ(180deg); } 50% { -moz-transform: rotateX(180deg) rotateY(180deg) rotateZ(0deg); } 75% { -moz-transform: rotateX(270deg) rotateY(90deg) rotateZ(360deg); } 100% { -moz-transform: rotateX(360deg) rotateY(0deg) rotateZ(270deg); } } .front { background: rgba(255,0,0,.5); } .back { background: rgba(0,255,0,.5); } .right { background: rgba(0,0,255,.5); } .left { background: rgba(0,255,255,.5); } .top { background: rgba(255,0,255,.5); } .bottom { background: rgba(255,255,0,.5); } #cube .front { -webkit-transform: rotateY(0deg ) translateZ( 100px ); -moz-transform: rotateY( 0deg ) translateZ( 100px ); } #cube .back { -webkit-transform: rotateX( 180deg ) translateZ( 100px ); -moz-transform: rotateX( 180deg ) translateZ( 100px ); } #cube .right { -webkit-transform: rotateY( 90deg ) translateZ( 100px ); -moz-transform: rotateY( 90deg ) translateZ( 100px ); } #cube .left { -webkit-transform: rotateY( -90deg ) translateZ( 100px ); -moz-transform: rotateY( -90deg ) translateZ( 100px ); } #cube .top { -webkit-transform: rotateX( 90deg ) translateZ( 100px ); -moz-transform: rotateX( 90deg ) translateZ( 100px ); } #cube .bottom { -webkit-transform: rotateX( -90deg ) translateZ( 100px ); -moz-transform: rotateX( -90deg ) translateZ( 100px ); } </style> </body> </html>[/tex]

꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 4 months ago

[tex] <font color = purple> <marquee> [/tex] answer if you know

ANSWER

ICZN stands for..... Please give me answer quickly

Posted by Anjali Yadav 5 years, 4 months ago

CBSE > Class 11 > Biology

4 answers

Michael Chawngthu 5 years, 3 months ago

What is the special characteristics of birth which allows them fly

Nawal Kishore Jha 5 years, 4 months ago

International code of zoological nomenclature

Anjali Yadav 5 years, 4 months ago

Thanks

Gaurav Seth 5 years, 4 months ago

The International Code of Zoological Nomenclature (ICZN) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals.
The International Commission on Zoological Nomenclature aims to provide 'standards, sense and stability for animal names in science' by acting as an advisor and arbiter for the zoological community.