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

Please Wait.. Editor is Loading..
What is polytene
  • 1 answers

Yogita Ingle 2 hours ago

Polytene chromosomes are large chromosomes which have thousands of DNA strands. They provide a high level of function in certain tissues such as salivary glands. They are produced when repeated rounds of DNA replication without cell division forms a giant chromosome. Thus polytene chromosomes form when multiple rounds of replication produce many sister chromatids which stay fused together.

Formation of megasporophyll
  • 1 answers

Yogita Ingle 2 hours ago

Megasporophyll is a leaflike structure that bears the megasporangia. In angiosperms and gymnosperms it is represented by the carpel and ovuliferous scale respectively. Microsporophyll is a modified leaf that bears the microsporangia. In angiosperms and gymnosperms it is represented by the stamens and male scales respectively.

How is eukaryotic ribosomes differ from prokaryotic ribosomes
  • 1 answers

Yogita Ingle 2 hours ago

Ribosomes in the cytoplasm of prokaryotic and eukaryotic cells slightly differ. However, prokaryotes have 70S ribosomes, each consisting of a (small) 30S and a (large) 50S subunit whereas ,eukaryotes have 80S ribosomes, each consisting of (small) 40S and a bound (large) 60S submit.
Both prokaryotic and eukaryotic ribosomes are composed of ribosomal RNA and ribosomal proteins. Their basic functioning is protein synthesis.

Where is goblet cell present?
  • 1 answers

Inder Preet 6 hours ago

They are found in epithelial lining of the organs
Label a)crystae and b)F 1 particle of mitochondria.
  • 1 answers

Riya Sharma 22 hours ago

The finger like folding present in mitochondria is called cristae.
Write three differences bewteen nucleosides and nucleotides???
  • 1 answers

Samya Parmar 5 hours ago

Nitrogenouswaste + Penthouse sugar+ Phosphate group= nucleotide Nucleotide - phosphate group = nucleoside
What are purines and pyrinidines?
  • 1 answers

Samya Parmar 5 hours ago

These are the nitrogenous waste
Which cell organelle is known as energy currency of a cell and why?
  • 1 answers

Inder Preet 6 hours ago

Mitochondria... Because it synthesis ATP( adenosine triphosphate)..
Who propose the sliding filament theory of mucles contraction?
  • 1 answers

Inder Preet 6 hours ago

Andrew Huxley and Niedergerke in 1954
How will you differentiate bewteen a male round worm and female round worm?
  • 1 answers

Inder Preet 6 hours ago

Female roundworm are longer than male roundworms.Female have straight tail while male have curved tail.Female have **** while male have cloacal aperture.
Give an account of female reproductive system of cockroach..
  • 1 answers

Yogita Ingle 1 day, 2 hours ago

Female reproductive system consists of two large ovaries which lie on the lateral side of the 2nd to 6th abdominal segments. Each ovary consists of 8 ovarioles containing beaded strings of developing ova. Each ovary gives rise to oviduct. Two oviducts from either side join to form common oviduct which open into ******. ****** opens into the genital chamber. A pair of spermatheca present in the 6th segment open into genital chamber.

During copulation, sperm is transferred through spematophores. After copulation, female cockroach secretes a capsule called ootheca which contains the fertilised eggs. Ootheca is a brownish capsule of 8 mm length with fertilised eggs. At about 10 oothecae are laid by the female in the cracks and crevices found in the house. Each ootheca has at about 14 to 16 eggs. Development of cockroach includes nymph stage. Nymph moults around 13 times to transform into an adult.

Role of nucleus pore
  • 2 answers

Yash Bhardwaj 3 hours ago

Thanks

Yogita Ingle 1 day, 2 hours ago

Nuclear pores are tiny holes present in the nuclear membrane of the nucleus. They are formed by the fusion of two nuclear membranes.
These holes allow specific substances to be transferred into a cell and out from it. They allow molecules such as RNA and proteins to move in both directions, between the nucleus and the cytoplasm.

Limbic system
  • 0 answers
How do ears help in body balance?????
  • 1 answers

Yogita Ingle 1 day, 6 hours ago

The inner ear contains vestibular apparatus that helps maintain the body’s balance. It consists of three semi-circular canals and the otolith organ which consists of the saccule and utricle, responsible for maintaining the body’s balance and posture.

Reproduction kya h
  • 1 answers

Yash Bhardwaj 3 hours ago

Part of life😂😂😂
Describe the vascular tissue system
  • 0 answers

CBSE Study App

  • Install myCBSEguide mobile app for FREE sample papers, Test Papers, Revision Notes, Previous year question papers, NCERT solutions and MCQ tests
  • Refer myCBSEguide App to your friends and Earn upto Rs.500/-.

myCBSEguide App

Create Question Papers

  • We have 3,00,000+ questions to choose from.
  • You can print these questions papers with your own Name and Logo.

This product is best fit for schools, coaching institutes, tutors, teachers and parents who wish to create most relevant question papers as per CBSE syllabus for their students to practice and excel in exams. Creating question papers online with your own name and logo takes less than 2 minutes. Just follow few steps, customise header and footer and download the question paper in PDF format. 

Download eBooks as PDF

  • Select eBook
  • Pay online
  • Download as PDF

Download CBSE sample papers, test papers and worksheets as PDF. Buy chapter wise online MCQ tests for day to day practice.

Work from Home

  • Work from home with us
  • Create questions or review them from home

No software required, no contract to sign. Simply apply as teacher, take eligibility test and start working with us. Required desktop or laptop with internet connection