PLANT KINGDOM

LIFE CYCLE OF BRYOPHYTES 

MOSS 

 LIFE CYCLE OF 

A 

LIVERWORT 

PTERIDOPHYTA, GYMNOSPERMS AND ANGIOSPERMS 

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DIHYBRID CROSS QUESTIONS

Problem:- 1) In rabbits, gray hair is dominant to white hair. Also in rabbits, black eyes are dominant to red eyes. These letters represent the genotypes of the rabbits: Calculate the dihybrid cross ratio with the help of Punnet’s square & also describe the expected phenotypic & genotypic ratio. GG - Grey BB - Black Gg - Grey Bb - Black gg - White bb - Red 2) An aquatic arthropod called a Cyclops has antennae that are either smooth or barbed. The allele for barbs (B) is dominant over smooth (bb). In the same organism Non-resistance to pesticides (N) is dominant over resistance to pesticides (nn). Make a "key" to show all the possible genotypes (and phenotypes) of this organism.

BIOLOGICAL CLASSIFICATION

BIOLOGICAL CLASSIFICATION CLASS XI

 MCQ

CHAPTER 2

BIOLOGICAL CLASSIFICATION

COMPLETE THE TEST AND SUBMIT SCORES IN COMMENTS

https://docs.google.com/forms/d/e/1FAIpQLSdpc7xQYFRlONH4VG3-MagMQdoS0ySq2Yb45yRg2zRlfilXfQ/viewform

MICROWORLD

Hydra in 10X                                            Euglena in 40X compound Microscope

 

Stained Onion peel Under 10X

Onion peel 10X

SUCCEEDING LIFE

 

·      GREAT AIM

·      CONTINUOUSLY AQUIRE KNOWEDGE

·      HARD WORK

·      PERSEVERANCE

INTERACTIVE 

KVPY-Aptitude Test 2021 will be held on 22nd May 2022.

 

NEST 2022

 

NEST 2022 Information 

Helpdesk email ID: nest2022cebs@gmail.com

Helpdesk Contact: 022 61087510

How to Apply

For queries regarding Information Brochure & Syllabus, and general information about NEST 2022:

Email Id. nest@cbs.ac.in

Helpdesk No. : +91-22-26532132 {Monday to Friday 10.00am - 5.00pm}

TOPICS OF BIOLOGY CLASS 12 CBSE TERM-1 EXAMINATION 2021-22

 Unit-VI Reproduction  (15 Marks)

Chapter-2: Sexual Reproduction in Flowering Plants Flower structure; development of male and female gametophytes; pollination - types, agencies and examples; outbreeding devices; pollen-pistil interaction; double fertilization; post fertilization events - development of endosperm and embryo, development of seed and formation of fruit; special modes- apomixis, parthenocarpy, polyembryony; Significance of seed dispersal and fruit formation.

 Chapter-3: Human Reproduction Male and female reproductive systems; microscopic anatomy of testis and ovary; gametogenesis - spermatogenesis and oogenesis; menstrual cycle; fertilisation, embryo development upto blastocyst formation, implantation; pregnancy and placenta formation (elementary idea); parturition (elementary idea); lactation (elementary idea). 

Chapter-4: Reproductive Health Need for reproductive health and prevention of Sexually Transmitted Diseases (STDs); birth control - need and methods, contraception and medical termination of pregnancy (MTP); amniocentesis; infertility and assisted reproductive technologies - IVF, ZIFT, GIFT (elementary idea for general awareness). 

Unit-VII Genetics and Evolution (20 Marks)

Chapter-5: Principles of Inheritance and Variation Heredity and variation: Mendelian inheritance; deviations from Mendelism – incomplete dominance, co-dominance, multiple alleles and inheritance of blood groups, pleiotropy; elementary idea of polygenic inheritance; chromosome theory of inheritance; chromosomes and genes; Sex determination - in human being, birds and honey bee; linkage and crossing over; sex linked inheritance - haemophilia, colour blindness; Mendelian disorders in humans -thalassemia; chromosomal disorders in humans; Down's syndrome, Turner's and Klinefelter's syndromes. 

Chapter-6: Molecular Basis of Inheritance Search for genetic material and DNA as genetic material; Structure of DNA and RNA; DNA packaging; DNA replication; Central Dogma; transcription, genetic code, translation; gene expression and regulation - lac operon; Genome, Human and rice genome projects; DNA fingerprinting. 

COMPLETE THE CROSSWORD

 

Kishore Vaigyanik Protsahan Yojana (KVPY)

The program aims to help the students to realize their potential and to ensure best scientific talent is groomed for research and development in the country. 

Fellowship and contingency grant are provided to the selected KVPY Fellows up to the pre Ph.D. level or 5 years whichever is earlier. 

In addition, summer camps for the KVPY Fellows are organized in prestigious research and educational institutions in the country. 

WORLD ENVIRONMENT DAY 2021

 

PLANTATION

PUSTAKOPAHAAR

ADMISSION NOTICE DAVV INDORE AFTER 12 TH

CLASS 12 BIOLOGY PRINCIPLES OF INHERITANCE PART-2

CLASS IX FUNCTIONAL UNIT OF LIFE