CBSE > Class 11 > Biology | CBSE Board | Homework Help

Ask questions which are clear, concise and easy to understand.

Ask Question

Which is not universal rule of nomenclature

Posted by Ankur Shakya 2 years, 11 months ago

CBSE > Class 11 > Biology

3 answers

Sushant Shendage 2 years, 11 months ago

Biological names are navee in greek . feather they are present in latin

0Thank You

Rizwana . 2 years, 11 months ago

1) First word is represente genera and second word represent species 2) First word of genera is start in Capital letter and Second word of Species in start in small letter 3) when we write scientific name in computer its should be in italics writing but when we write handwritten its should be separately underline

0Thank You

Anjan Karthi 2 years, 11 months ago

Biological names are never in Greek, rather they are present in Latin.

0Thank You

ANSWER

Mitrohondri

Posted by Shraddha Goswami 2 years, 11 months ago

CBSE > Class 11 > Biology

3 answers

Naman Patel 2 years, 11 months ago

It is power house of cell which give the energy to the cell

0Thank You

Ved Verma 2 years, 11 months ago

Known as powerhouse of the cell

0Thank You

Ankit ............ 2 years, 11 months ago

Double membrane bound organelles and eukaryotic organism. Generate supply of adenosine triphosphate used as source of chemical energy. Discovered by by Albert von kolliker in 1880 in voluntary muscles of insects.

1Thank You

ANSWER

Which is also known as living fossil ? From ch 2 BIOLOGICAL CLASSIFICATION CLASS 11

Posted by Biswajeet Sahoo 2 years, 11 months ago

CBSE > Class 11 > Biology

2 answers

Anjan Karthi 2 years, 11 months ago

They are organisms which are believed to have been alive on earth since about 70 million years ago and have survived the K-T explosion which wiped off Dinosaurs from the Earth. Eg :- ??????? (King Crab), ?????? ??????, ??????????, etc.

1Thank You

Ankit ............ 2 years, 11 months ago

Ginkgo biloba

1Thank You

ANSWER

What is 70s and 80s .in cell

Posted by Divya Kumari 2 years, 11 months ago

CBSE > Class 11 > Biology

4 answers

Karnika Negi 2 years, 9 months ago

70s and 80s are the types of ribosomes....

0Thank You

Naman Patel 2 years, 11 months ago

It is an syedberg unit that is use for ribosomes

1Thank You

Anjan Karthi 2 years, 11 months ago

They are the different kinds of ribosomes which can be found in living cells. When PROKARYOTIC cells contain 70s ribosomes (of two parts : 50s and 30s), EUKARYOTIC cells contain 80s ribosomes (of two parts : 60s and 40s). Here, "s" indicates the sedimentation coefficients of the ribosomes, which indirectly helps measure the dimensional parameters of these non-membrance bound organelles.

1Thank You

Khushi Mishra 2 years, 11 months ago

Ribosome

1Thank You

ANSWER

Kis ka term 2 shuru ho rha 11th walo???

Posted by Shruti Kushwaha 2 years, 11 months ago

CBSE > Class 11 > Biology

5 answers

Prachi Upadhyay 2 years, 11 months ago

Started

0Thank You

Neeraj Gujjar 2 years, 11 months ago

Yes

0Thank You

Ankit ............ 2 years, 11 months ago

Your

0Thank You

Mannu Dahiya 2 years, 11 months ago

Mine

0Thank You

Ankit ............ 2 years, 11 months ago

Our

0Thank You

ANSWER

Which algea is rich in protein

Posted by Hemant Lohkana 2 years, 11 months ago

CBSE > Class 11 > Biology

3 answers

Vandana Rn 2 years, 11 months ago

chlorella

0Thank You

Naman Patel 2 years, 11 months ago

Spirulina and chlorella (which use in space for prevent defence of protein)

0Thank You

Ankit ............ 2 years, 11 months ago

Blue green algae including spirulina and chlorella.

0Thank You

ANSWER

Describe with the help of neat labelled diagram of ultrastructure of eukaryotic nucleus

Posted by Amruta Gurav 2 years, 11 months ago

CBSE > Class 11 > Biology

0 answers

ANSWER

What is the special feature of porifera

Posted by Joshna Eh 3 years ago

CBSE > Class 11 > Biology

4 answers

Naman Patel 2 years, 11 months ago

They have Ostia

0Thank You

Mannu Dahiya 2 years, 11 months ago

Basically they are having sperms and ovary in same individual

0Thank You

Ishika Darpe 2 years, 11 months ago

Water vascular system

0Thank You

Ankit ............ 3 years ago

Generally marine aquatic organisms fresh water species. Body is assymetrical. Body can be cylindrical vase like, rounded or sac like.

0Thank You

ANSWER

How humans are different from aids?given your reson on the basic of chromosomes.

Posted by Arman Verma 3 years ago

CBSE > Class 11 > Biology

0 answers

ANSWER

MCQ term first

Posted by Lakshya Chauhan 3 years ago

CBSE > Class 11 > Biology

4 answers

Sushant Shendage 2 years, 11 months ago

First term biology exam paper mare pas hai

0Thank You

Naitik Mishal 2 years, 11 months ago

Paper hai kya bio ka 1st term kendriya vidyalaya

0Thank You

Lakshya Chauhan 3 years ago

Nucleic acids are serve as:

2Thank You

Lakshya Chauhan 3 years ago

Chapter 8

3Thank You

ANSWER

What are the two types of neurotransmitter and example

Posted by Divya Kumari 3 years ago

CBSE > Class 11 > Biology

2 answers

Prabhjot Kaur 2 years, 10 months ago

Small molecule transmitter and neuropeptides

0Thank You

Lakshya Chauhan 3 years ago

Which one is not a part of the Golgi Complex?

0Thank You

ANSWER

Tmv diagram

Posted by Savita Gb Savita Gb 3 years ago

CBSE > Class 11 > Biology

2 answers

Ishika Darpe 2 years, 11 months ago

It is given in ncert book

0Thank You

Ankit ............ 3 years ago

We can't represent the diagram on this app,it doesn't support it. But you can watch it on Google.

0Thank You

ANSWER

Description about fabaceae with floral formula

Posted by Abhishek Bk 3 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 3 years ago

The Fabaceae family is a family of legumes and is a type of angiosperm. They are one of the most common angiosperms and are spread all over the world. You already know from above the floral formula of Fabaceae family. It is given as - % ⚥ K(5) C1+2+(2) A(9)+1 G1

1Thank You

ANSWER

Posted by Anshuman Choudhary 3 years ago

CBSE > Class 11 > Biology

4 answers

Anjan Karthi 2 years, 11 months ago

U = gravitational potential energy.

0Thank You

Mannu Dahiya 2 years, 11 months ago

Universal set

1Thank You

Divya Kumari 3 years ago

U means what

1Thank You

Ankit ............ 3 years ago

U mean what

0Thank You

ANSWER

Pplo is a bacteria or virus

Posted by Divya Kumari 3 years ago

CBSE > Class 11 > Biology

5 answers

Hemant Lohkana 2 years, 11 months ago

it belong to bacteria or it can survive without oxgen

1Thank You

Mohit Ahirwar 2 years, 11 months ago

Mycoplasma

1Thank You

Marshal Kasana 2 years, 11 months ago

It is a bacteria

0Thank You

Ankit ............ 3 years ago

It stands for Pleuro Pneumonia organisms. It is the genus of bacteria. Or lack cell wall.

1Thank You

Shweta Yadav 3 years ago

It belongs to the genus of bacteria

0Thank You

ANSWER

Which are smallest pplo or mycoplasma and in which organisms occurred

Posted by Divya Kumari 3 years ago

CBSE > Class 11 > Biology

2 answers

Vandana Rn 2 years, 11 months ago

mycoplasma

0Thank You

Vasudha Vasudha 3 years ago

Mycoplasma species are the smallest bacterial cells yet discovered, can survive without oxygen, and come in various shapes. For example, M. genitalium is flask-shaped (about 300 x 600 nm), while M. pneumoniae is more elongated (about 100 x 1000 nm).

1Thank You

ANSWER

Main difference between pplo and mycoplasma.

Posted by Divya Kumari 3 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 3 years ago

Mycoplasma is the organisms that are free living and the simplest of the prokaryotes. They lack cell walls and were discovered in the pleural fluid of the animals who were suffering from pleuropneumonia and they are called PPLO which stands for Pleuropneumonia like organisms

1Thank You

ANSWER

Hypothesis

Posted by Divya Kumari 3 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 2 years, 11 months ago

a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation

0Thank You

ANSWER

Human/rice genome project

Posted by Krishna Kumar 3 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 2 years, 11 months ago

Rice (Oryza sativa) is one of the most important crops in the world. Rice, wheat, and maize together account for about half of the world's food production, and rice itself is the principal food of half of the world's population (Sasaki and Burr, 2000). Rice is the obvious choice for the first whole genome sequencing of a cereal crop. The rice genome is well mapped and well characterized, and it is the smallest of the major cereal crop genomes at an estimated 400 to 430 Mb. The next largest genome of an important cereal crop is that of sorghum, at 750 to 770 Mb, and the wheat genome is ∼37 times the size of the rice genome at close to 16,000 Mb (Arumuganathan and Earle, 1991). Grass genomes, including those of rice, wheat, maize, barley, rye, and sorghum, share a large degree of synteny, making rice an excellent model cereal (Gale and Devos, 1998). Rice is also the easiest of the cereal plants to transform genetically. A genome size of 430 Mb nonetheless represents a daunting task for whole genome sequencing. The rice genome is 3.5 times the size of the Arabidopsis genome and the third largest public genome project undertaken to date, behind the human and mouse genomes. The International Rice Genome Sequencing Project (IRGSP) began in September 1997, at a workshop held in conjunction with the International Symposium on Plant Molecular Biology in Singapore. Scientists from many nations attended the workshop and agreed to an international collaboration to sequence the rice genome. As a result, representatives from Japan, Korea, China, the United Kingdom, and the United States met six months later in Tsukuba to establish the guidelines. The participants agreed to share materials and to the timely release of physical maps and annotated DNA se-quence to public databases. The IRGSP has evolved to include 11 nations, and the IRGSP Working Group, composed of a representative from each participating nation, formulates IRGSP policies and finishing standards. The recent interim IRGSP meeting at Clemson University (September 19 and 20, 2000) in South Carolina was the largest rice genome meeting to date and was attended by more than 70 scientists and administrators from Japan, Taiwan, Thailand, Korea, China, India, Brazil, France, Canada, and the United States. The meeting was organized by Rod Wing, U.S. IRGSP Representative (Clem-son University), and chaired by Ben Burr, IRGSP Coordinator (Brookhaven National Laboratory, New York), and Takuji Sasaki, Program Director of the Rice Genome Research Program (RGP) in Japan. Major players in the project include the RGP; the CCW, a collaboration between the Clemson University Genomics Institute (CUGI), Cold Spring Harbor Laboratory, and the Washington University Genome Sequencing Center; the Institute for Genome Research (TIGR) in Rockville, MD; and the Plant Genome Initiative at Rutgers University (PGIR). Various additions and/or changes in IRGSP members were noted at the meeting. Brazil became the newest member and was represented by Antonio Costa de Oliveira of the Universidad Federal de Pelotas, who proposed to work on chromosome 12. Canada representative Thomas Bureau of McGill University proposed switching from work on chromosome 2 to coordinating activities on chromosome 9 with Thailand. India, previously an unfunded member of the IRGSP, has a new Rice Genome Program (represented by Akhilesh Tyagi of the University of Delhi and Nagendra Singh of the Indian Agricultural Research Institute) and will begin work on chromosome 11. A full list of participating countries and institutions, including URLs of sites offering information relevant to the IRGSP, is provided in Table 1. Table 1. Table 1. Rice Sequencing Participants and Chromosome Assignments Rice genome sequencing is being conducted along the same lines as numerous other large-scale genome sequencing projects. Large insert genomic libraries, used as the primary sequencing templates, are constructed in bacterial artificial chromosomes (BACs) or P1-derived artificial chromosomes (PACs). Sequencing of the rice genome is being performed mainly from genomic BAC or PAC libraries created from the Nipponbare variety, which was chosen as the common template throughout the IRGSP; China, working on the sequencing of chromosome 4, is the only IRGSP member to use a different variety, indica Guang Lu Ai 4 (Sasaki and Burr, 2000). Budiman (1999), in a report accessible through the CUGI website, presents a complete description of the preparation of two deep-coverage rice BAC libraries (25-fold genome coverage) used by the IRGSP.

0Thank You

ANSWER

what do we learn from identification of individuals and populations

Posted by Niranjan Basfor 3 years ago

CBSE > Class 11 > Biology

1 answers

Aditya Rana 3 years ago

Hlo

3Thank You

ANSWER

Define afferent and efferent fibres

Posted by Divya Kumari 3 years ago

CBSE > Class 11 > Biology

1 answers

Ankit ............ 3 years ago

Efferent fibres carry impulses away from central nervous system. Afferent or sensory carry impulses towards the nervous system.

0Thank You

ANSWER

Mode of nutrition of eubacteria

Posted by Monika Pradhan 3 years ago

CBSE > Class 11 > Biology

3 answers

Arisha Fatma 2 years, 11 months ago

Photosynthetic autotrophs:like Cynobacteria(blue green algae)BGA. Some like Anabena and nostoc hve specialised cells called haterocysts for nitrogen fixation. Chemosynthetic autotrophs: Oxidised various inorganic substance like nitrates/nitrites,ammonia and use released energy for their ATP production .Theg heps in nutrition recycling of N,P,Fe and S. Heterotrophic bacteria: Decomposers,help in making curd, production of antibiotics,N2 fixation,cause disease like cholera typhoid tetanus and citrus canker

0Thank You

Anjan Karthi 2 years, 11 months ago

Mode of nutrition in Eubacteria varies in a really diversifying manner and these groups of organisms can exhibit almost all kinds of modes of nutrition. Eg :- (A) Photosynthetic autotrophs like ?????? and ????????. (B) Chemosynthetic autotrophs like ???????????? and ?????? ?????? ????????. (C) Saprophytic heterotrophs like ???????????. (D) Symbiotic heterotrophs like ?????????? ???? (present in human colon) and ????????????? (present in Lichen). (E) Parasitic heterotrophs like ?????????? ????? and ????????????? ??????????.

0Thank You

Ankit ............ 3 years ago

Most of familiar eubacteria are heterotrophs means they must take food from outside sources. The majority are saprophytes which consume dead material.

2Thank You

ANSWER

Sir protein digestion note long question

Posted by Shivam Patra 3 years ago

CBSE > Class 11 > Biology

1 answers

Banna_Rupendra_Rajput Chouhan 3 years ago

What is photosynthesis

1Thank You

ANSWER

Which is not the universal rule of nomenclature

Posted by Sujal Bishnoi 3 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 2 years, 11 months ago

Hence, the correct option is Biological names are generally in Greek. Biological name are in latin language and written in italic ..

0Thank You

ANSWER

What is pyramidine

Posted by Tanisha Upadhayay 3 years ago

CBSE > Class 11 > Biology

2 answers

Mohit Ahirwar 2 years, 11 months ago

Ex thymidine

0Thank You

Ankit ............ 3 years ago

A colourless crystalline compound with basic properties. A substituted derivative of pyrimidine , specially the basis thymine cytocyne present in DNA.

1Thank You

ANSWER

What is amoeba

Posted by Aditya Kumar 3 years ago

CBSE > Class 11 > Biology

5 answers

Mahima Gangwar 3 years ago

It is an unicellular organism which is mostly aquatic and is colourless. Amoeba have fall feets.

0Thank You

Jagriti Maurya 3 years ago

2Thank You

Ankit ............ 3 years ago

Often called an amoeboid. Unicellular organism which has ability to alter its shape by extending and retracting pseudopods.

3Thank You

Shailesh Kumar Jha 3 years ago

unicellular organism that has the ability to change its shape.

3Thank You

Shailesh Kumar Jha 3 years ago

single celled eukaryotic organism that has no definate shape and that moves by means of pseudopodia.

1Thank You

ANSWER

What are the advantages of giving scientific names of the organic ?

Posted by Sanjana Pal 3 years ago

CBSE > Class 11 > Biology

1 answers

Ankit ............ 3 years ago

Scientific names are standardized and accepted University. 2. The organism can easily be characterized and making it easier to understand. 3. These organisms have unique scientific name which it makes them unique with their creature and also helps to avoid confusion created by common names. 4. It also helps to determine inter specific relationship by understanding the similarities and differences between different species of same genre.

0Thank You

ANSWER

In Floral Formula- % refers to?

Posted by Paro ... 3 years ago

CBSE > Class 11 > Biology