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

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

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Posted by Anshuman Choudhary 4 years ago

CBSE > Class 11 > Biology

4 answers

Anjan Karthi 4 years ago

U = gravitational potential energy.

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Mannu Dahiya 4 years ago

Universal set

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Divya Kumari 4 years ago

U means what

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Ankit ............ 4 years ago

U mean what

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Pplo is a bacteria or virus

Posted by Divya Kumari 4 years ago

CBSE > Class 11 > Biology

5 answers

Hemant Lohkana 4 years ago

it belong to bacteria or it can survive without oxgen

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Mohit Kumar 4 years ago

Mycoplasma

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Marshal Kasana 4 years ago

It is a bacteria

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Ankit ............ 4 years ago

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

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Shweta Yadav 4 years ago

It belongs to the genus of bacteria

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Which are smallest pplo or mycoplasma and in which organisms occurred

Posted by Divya Kumari 4 years ago

CBSE > Class 11 > Biology

2 answers

Vandana Rn 3 years, 11 months ago

mycoplasma

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Vasudha Vasudha 4 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).

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Main difference between pplo and mycoplasma.

Posted by Divya Kumari 4 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 4 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

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Hypothesis

Posted by Divya Kumari 4 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 4 years ago

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

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Human/rice genome project

Posted by Krishna Kumar 4 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 4 years 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.

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what do we learn from identification of individuals and populations

Posted by Niranjan Basfor 4 years ago

CBSE > Class 11 > Biology

1 answers

Aditya Rana 4 years ago

Hlo

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Define afferent and efferent fibres

Posted by Divya Kumari 4 years ago

CBSE > Class 11 > Biology

1 answers

Ankit ............ 4 years ago

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

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Mode of nutrition of eubacteria

Posted by Monika Pradhan 4 years ago

CBSE > Class 11 > Biology

3 answers

Arisha Fatma 3 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

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Anjan Karthi 4 years 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 ????????????? ??????????.

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Ankit ............ 4 years ago

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

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Sir protein digestion note long question

Posted by Shivam Patra 4 years ago

CBSE > Class 11 > Biology

1 answers

Banna_Rupendra_Rajput Chouhan 4 years ago

What is photosynthesis

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ANSWER

Which is not the universal rule of nomenclature

Posted by Sujal Bishnoi 4 years ago

CBSE > Class 11 > Biology

1 answers

Vasudha Vasudha 4 years ago

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

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What is pyramidine

Posted by Tanisha Upadhayay 4 years ago

CBSE > Class 11 > Biology

2 answers

Mohit Kumar 4 years ago

Ex thymidine

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Ankit ............ 4 years ago

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

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What is amoeba

Posted by Aditya Kumar 4 years ago

CBSE > Class 11 > Biology

5 answers

Mahima Gangwar 4 years ago

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

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Jagriti Maurya 4 years ago

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Ankit ............ 4 years ago

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

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Shailesh Kumar Jha 4 years ago

unicellular organism that has the ability to change its shape.

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Shailesh Kumar Jha 4 years ago

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

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

Posted by Sanjana Pal 4 years ago

CBSE > Class 11 > Biology

1 answers

Ankit ............ 4 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.

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In Floral Formula- % refers to?

Posted by Paro ... 4 years ago

CBSE > Class 11 > Biology

3 answers

Naman Patel 4 years ago

Zygomorphic

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Ishika Darpe 4 years ago

Zygomorphic symmetry of flower

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Ankit ............ 4 years ago

Zygomorphic flower

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Best conclusion on the topic "angiosperms".

Posted by Cilestina Lepcha 4 years ago

CBSE > Class 11 > Biology

1 answers

Mannu Dahiya 4 years ago

Angiospermae means the plants which bear naked seeds

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Abscisic acid

Posted by Vanshika Saini 4 years ago

CBSE > Class 11 > Biology

1 answers

Ankit ............ 4 years ago

Abscisic acid is the growth inhibitor hormone in the plants. Synthesized within the stem, leaves, fruit and seeds of the plant.

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What is dinoflagelates

Posted by Isha Kumari 4 years ago

CBSE > Class 11 > Biology

4 answers

Mannu Dahiya 4 years ago

Dinoflagellates are the organisms with di(2) flagella(helps in locomotion)i.e, transversely and longnitudinally.Example, Red Dinoflagellates(Gonaulax) are the organisms which are responsible for the redness seen in the oceans

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Vikas Dhaka 4 years ago

Ooo

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Anjan Karthi 4 years ago

...... Colours covering their entire body surface are extensively thick cell walls and they have TWO flagella - one transverse and one longitudinally emanating out of the cell wall surface.

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Anjan Karthi 4 years ago

Dinoflagellates are exclusively marine plant-like protistans which have a huge internal diversity due to different pigments present in their cells causing RED, BROWN, YELLOW, ORANGE.

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1. Name the two semiautonomous cell organelles. 2. The most popular model that explains the structure of plasma membrane is __________. 3. Most abundant protein in the plant world and biosphere. 4. Light phase of photosynthesis was explained by: 5. Dark reaction is otherwise known as: 6. Full form of PEP is: 7. The three stages of dark reaction are: 8. The site of light and dark reactions are respectively are ___________&______________. 9. How many subunits are there in human adult haemoglobin? 10. Differentiate between plant and animal cells 11. Cell organelles and functions 12. Study the types of placentation and examples. 13. Aestivation types and placentation. 14. SER differ from RER in: 15. Alternation of generations 16. Symmetry, coelom & level f organisation- examples 17. Oviparous and viviparous organisms. 18. Egg laying mammal 19. Features of chordates 20. Types of bones in aves 21. Flight adaptations 22. The Phylogenetic System of classification was put forth by: 23. Plant and animal specimens may also be preserved as dry specimens in________. 24. Cyanobacteria are classified under: 25. Which of the following plastids stores oil and fat? [ 26. The outer protein covering of virus is_______. 27. Full form of DNA/RNA ______________. 28. The purines and pyrimidines of a nucleic acids are: 29. What are the structural units of DNA? 30. Types of Sugars in DNA and RNA are ____________. 31. The types of bonds present in polysaccharides, proteins, and nucleic acids are so and so------ 32. Lipids are _______________ chains. 33. Examples for tertiary and quaternary structure of proteins are respectively__________ and _______. 34. Enzymes are ____________. 35. The enzyme that catalyses the convertion of co2 into carbonic acid is: 36. The number of species that are known and described is: 37. How many essential amino acids are known? 38. The arrangement of sepals or petals in floral bud is called 39. In Which form Fungi Stores Food Material? 40. A group of closely related families is called ______. 41. National Botanical Institute is located in ________. 42. The primary structure of a protein molecule has: 43. Which among the following belong to Sphenopsida? 44. Apart from excretion what is another major function of kidneys in mammals? 45. Which organisms belonging to Urochordata?

Posted by Yuvan Kalyan 4 years ago

CBSE > Class 11 > Biology

4 answers

Divya Kumari 4 years ago

2)fluid mosaic model . 3)ruBisCo 9)four subunits. 26) RNA. 27) DNA-deoxy ribo nuclic acid and RNA- ribo nuclic acid. 29) nucleotide

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Anjan Karthi 4 years ago

8) Light reaction = Inside thylakoids. Dark reactions = Stroma. 9) 4 subunits.

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Anjan Karthi 4 years ago

6) Phospho-enol Pyruvate

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Anjan Karthi 4 years ago

1) Mitochondria and Chloroplast. 2) Singer and Nicolson. 3) RuBisCo (Ribulose Bis phosphate Carboxylase - oxygenase)

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Tomorrow is my biology exam i have not started my study's yet so how can you help me

Posted by Om Thorat 4 years, 1 month ago

CBSE > Class 11 > Biology

5 answers

Mannu Dahiya 4 years, 1 month ago

Join telegram group *biology notes for neet*

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Vasudha Vasudha 4 years, 1 month ago

Go through the video Revision notes Given in my cbse guide

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🤟Royal Thakur 🤟 4 years, 1 month ago

How many chapters you have to prepare ??

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Swanika Ramaraj 4 years, 1 month ago

Go through one shot youtube videos and search for notes i think it might help. But from now on pls start preparing in advance (:

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Ankit ............ 4 years, 1 month ago

I can't help you but I can suggest you that you can revise the chapters from this app. Thank you!

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Heaviest bone in human body it is Femur or skull.

Posted by Divya. Kumari 4 years, 1 month ago

CBSE > Class 11 > Biology

3 answers

Prabhjot Kaur 3 years, 10 months ago

Femur

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Ankit ............ 4 years, 1 month ago

Femur- longest, longest and heaviest in the body.

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Karan Bhardwaj 4 years, 1 month ago

Skull

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What are the cellular components of blood?

Posted by Nasir Hussain 4 years, 1 month ago

CBSE > Class 11 > Biology

3 answers

Ankit ............ 4 years, 1 month ago

RBC ,WBC and Platelets

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Ankit ............ 4 years, 1 month ago

Erythrocytes (RBC), leukocytes (WBC),and thrombocytes(

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Karan Bhardwaj 4 years, 1 month ago

Haemoglobin component

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Main difference between locomotion and movement.

Posted by Divya. Kumari 4 years, 1 month ago

CBSE > Class 11 > Biology

2 answers

Ankit ............ 4 years, 1 month ago

Locomotion-Displacement of a body from one place to another Movement-Displacement of a body or a part of body from its original position.

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Rishabh Azad 4 years, 1 month ago

Perhaps movement is occur by muscles whereas locomotion by cilia and flagella

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ANSWER

State two economically important uses of:a)heterotropic b) archaebacteria

Posted by Sahithi Arika 4 years, 1 month ago

CBSE > Class 11 > Biology

2 answers

Arisha Fatma 4 years ago

Two economically important uses of heterotrophic bacteria are: (a)They help in the production of curd from milk (b) Many antibiotics are obtained from some species of bacteria. Two economically important uses of Archaebacteria are: (a) Methane gas is produced from the dung of ruminant by the methanoges (b) Methanoges are also involved in the formation of biogas and sewage treatment.

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Anjan Karthi 4 years, 1 month ago

a) Used at fermentation sites and commercial curd production. b) A group of archaebacteria called METHANOGENS are present in rumen of cattle and are capable of producing CH4. They also help study how early life emerged.

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