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What is positive and negitive hydrostatic pressure?

Posted by Subham Das 8 years, 4 months ago

CBSE > Class 11 > Biology

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What is source and sink

Posted by Bhaskar Dubey 8 years, 4 months ago

CBSE > Class 11 > Biology

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Why are date palm referred to as dioecious

Posted by Mr Jangir 8 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Amar Kumar 8 years, 4 months ago

Date palm is a dioecious species with male and female flowers being produced in clusters on separate palms. These flowering clusters are produced with axils of leaves of the previous year's growth. In rare cases both pistillate and staminate flowers are produced on the same spike while the presence of hermaphrodite flowers in the inflorescence has also been reported. Palms which carry both uni-sexual and hermaphrodite flowers are known as polygamous.

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Why are date palm

Posted by Mr Jangir 8 years, 4 months ago

CBSE > Class 11 > Biology

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Power of cell division is not impaired in unicellular organisms

Posted by Jaspinder Singh 8 years, 4 months ago

CBSE > Class 11 > Biology

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Why rbc does not have nucleus and mitochondria

Posted by Sandhya Verma 8 years, 4 months ago

CBSE > Class 11 > Biology

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Jyoti Ranjan 8 years, 4 months ago

Because most of every cell has nucleus and mitochondria present in it.. Which is also known as power house.. It synthesize ATP..

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What is biolumscience

Posted by Lalith Choudhry 8 years, 4 months ago

CBSE > Class 11 > Biology

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Give the similarities between DNA and RNa

Posted by Shivani Gupta 8 years, 4 months ago

CBSE > Class 11 > Biology

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Jyoti Ranjan 8 years, 4 months ago

In DNA thymine pairs with adenine, but in RNA uracil pairs with adenine. Similarities: - DNA and RNA are made up of monomers called nucleotides. - DNA and RNA both have 3 nitrogenous bases: Adenine, Cytosine and Guanine.

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Give the similarities between DNA & RNA

Posted by Shivani Gupta 8 years, 4 months ago

CBSE > Class 11 > Biology

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How do they change their personality

Posted by Ravindra Charan 8 years, 4 months ago

CBSE > Class 11 > Biology

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What is DNA

Posted by Reet Jain Jain 8 years, 4 months ago

CBSE > Class 11 > Biology

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Ashish Soni 8 years, 4 months ago

Deoxyribose nuclic acid which is formed by polynucleotide chain and it transfer genetic material from parent to offspring and ut us a part of chromosome

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Alok Sharma 8 years, 4 months ago

Deoxyribonucleic acid . It is a genetic material.

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What is apoplast and symplast?

Posted by Me Souhardee❤️ 8 years, 4 months ago

CBSE > Class 11 > Biology

2 answers

Nikhil Yadav 8 years, 4 months ago

Apoplast and symplast can be defined as the two pathways taken by the water absorbed by the roots .In apoplast water travels through the adjesent cell walls of the cells whereas in symplast water travels by crossing the cell membranes . In symplast pathway with the help of openings called the plasmodesmata

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J Mondal 8 years, 4 months ago

Consult NCERT page no.184 and 185

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Name of fossil fuel who name them

Posted by Ankur Raj 8 years, 4 months ago

CBSE > Class 11 > Biology

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Differentiae between virus and viroids

Posted by Naveen Kumar Naveen 8 years, 4 months ago

CBSE > Class 11 > Biology

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Reena Saifi 8 years, 4 months ago

Viroids are smaller in size than viruses.?

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Ashish Soni 8 years, 4 months ago

Viroids are free RNA molecules of low molecular weight without any protein coat while viruses can have either RNA or DNA molecules encapsulated in a protein coat. Viroids are smaller in size than viruses.

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Define oxygen dissociation curve

Posted by Mohan Singh 8 years, 4 months ago

CBSE > Class 11 > Biology

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name and explain the two process which take place in mitochndria for exchange of water and gas.

Posted by Ritu Negi 8 years, 4 months ago

CBSE > Class 11 > Biology

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Ashish Soni 8 years, 4 months ago

Osmosis and Diffusion

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name the two proteins secreted by stiriated muscles?

Posted by Ritu Negi 8 years, 4 months ago

CBSE > Class 11 > Biology

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What is light reaction??

Posted by Jyoti Ranjan 8 years, 4 months ago

CBSE > Class 11 > Biology

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Ashish Soni 8 years, 4 months ago

The reaction which take place in the presence of sun rays and the formation of glucose take place

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Difference between action spectrum and absorption spectrum with respect to photosynthesis???

Posted by Me Souhardee❤️ 4 years, 9 months ago

CBSE > Class 11 > Biology

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Sia ? 4 years, 9 months ago

Absorption spectrum deals with wavelengths of light absorbed by each pigment whereas the action spectrum indicates the overall rate of photosynthesis at each wavelength of light. It shows the overall rate of photosynthesis at each wavelength of light.

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Are such patients who never come back to normal life r living or non-living? Tomorrow exams!

Posted by Me Souhardee❤️ 8 years, 4 months ago

CBSE > Class 11 > Biology

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Why plant not show growth in 1:1

Posted by Amulya Kumar 8 years, 4 months ago

CBSE > Class 11 > Biology

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What is the difference between open circulatory system and closed circulatory system?

Posted by Shraddha Sai 8 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Nishu Nagwan 8 years, 4 months ago

Open circulatory system is a system in which blood flow directly into the body and organs bathe into it. Closed circulatory system consists of proper blood vessels which transport the blood to different body organs.

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Name two substance absorb in the stomach apart from water

Posted by Amit Yadav 8 years, 4 months ago

CBSE > Class 11 > Biology

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Amit Yadav 8 years, 4 months ago

Simple sugar and alcohol

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Draw a draiam of plant cell and anomal cell

Posted by Aaa Gupta 8 years, 4 months ago

CBSE > Class 11 > Biology

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Nail are death cells so ,why it's grows

Posted by Vishal Singh 8 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Barnita Guhaneogi 8 years, 4 months ago

Nails and hair are essentially made up of a tough protective protein called keratin. While the hair grows in a hair follicle, nails grow from the matrix (the base of the nail bed). Both the hair follicle and the nail matrix are made of epithelial cells and will continue to grow as long as they receive nutrition and remain healthy. As the epithelial cells within the follicle and matrix multiply, the older cells are pushed out, upwards through your skin. They die and harden, thus turning into hair or nails. This process, called keratinisation, makes your hair and nails grow.

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Explain the process of cell division in meiosis briefly and in an understandable manner...plzz..

Posted by Shivangi Singh 8 years, 4 months ago

CBSE > Class 11 > Biology

1 answers

Ashish Soni 8 years, 4 months ago

Meiosis is the part of cell division in which the chromosome number become half and cell divides twice and give four daughter cell Now it is divided into two part Meiosis 1 Meiosis 2 In meiosis 1 prophase contain Lypotene, Zygotene, pachytene, Diplotene , Diakinesis. In which Diplotene stage is most essential then Metaphase 1 Anaphase 1 Telophase 1 Due to this process cell divides once and cell convert into 2 daughter cell Then this two daughter cell divides by Meiosis 2 which is same as mitosis division In this way Meiosis take place in germ cell

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What is assimilation

Posted by Astik Dwivedi 8 years, 4 months ago

CBSE > Class 11 > Biology

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Ashish Soni 8 years, 4 months ago

the absorption and digestion of food or nutrients by the body or any biological system

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De novo meaning

Posted by Aryan Rangra 8 years, 4 months ago

CBSE > Class 11 > Biology

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Ashish Soni 8 years, 4 months ago

starting from the beginning; anew.

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What is concentration gradient???

Posted by Sneha S 8 years, 4 months ago

CBSE > Class 11 > Biology

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Ashish Soni 8 years, 4 months ago

Concentration Gradient Defined. The formal definition of a concentration gradient is the process of particles, which are sometimes called solutes, moving through a solution or gas from an area with a higher number of particles to an area with a lower number of particles. The areas are typically separated by a membrane

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What is neurons

Posted by Abhishek Pandey 8 years, 4 months ago

CBSE > Class 11 > Biology