Showing posts with label class10-biology. Show all posts
Showing posts with label class10-biology. Show all posts

Monday 26 December 2011

Explore Biodigital Human Body in 3D

Explore Biodigital Human Body in 3D


The website BioDigitalHuman provides interactive 3D Human body and anatomical systems views.
Explore Biodigital Human Body in 3D (#humanbody)(#eduvictors)

To view the website you need a browser supports HTML5 and WebGL. Chrome supports these. I think you need to install plugins in Firefox and IE9+. You need a broadband connection to view the site. No doubt it has been the award winning site.

Monday 21 November 2011

CBSE - Class 10 - Biology - Chapter 15 - Our Environment

Chapter: Our Environment

Q1: Define Ecology

Answer: Ecology is a scientific study of the interactions between organisms and the environment. Ecology integrates all areas of biological research and  informs environmental decision.

Q2: What is the scope of Ecology Research?

Answer: Ecology study can be broadly classified as:
           a. Organismal Ecology
           b. Population Ecology
           c. Community Ecology
           d. Ecosystem Ecology
           e. Landscape Ecology
           f. Global Ecology

In nutshell, Ecology study advocates protection of nature and the environment.

Q3: Define Ecosystem.

Answer: An environment comprises of all living (biotic) and non-living (abiotic) things that occur naturally on the Earth or any of its region. All these living organisms interact with each other and their growth, reproduction and other activities are affected by the abiotic components of ecosystem.

Q4: Is garden an example of Ecosystem?

Answer: Yes. In an garden, all biotic components (e.g. plants, trees, animals like rats, frogs, birds, insects etc.) interact with each other and with abiotic components (garden soil, water etc.) for their growth and reproduction and other activities. Thus garden forms an ecosystem.

Q5: Give examples of natural ecosystems.

Answer: Forests, ponds, lakes, sea, oceans, coral reefs, rivers etc.

Q6: Give examples of human made (artificial )ecosystems.

Answer: Gardens, Crop-fields etc.

Monday 31 October 2011

Class 10 - Biology - How Do Organisms Reproduce? (Very Short Questions & Answers)

 How Do Organisms Reproduce? 

Avocado Seed
credits:wpclipart


Very Short answer Questions asked in board examinations. 
Q1: Why simply copying of DNA in a dividing cells not enough to maintain continuity of life?

Answer: Copying of DNA along with creation of an additional cellular apparatus is necessary.

Q2: How does plasmodium undergo fission?

Answer: Plasmodium divides into many daughter cells simultaneously

Q3: How spirogyra reproduces by fragmentation?

Answer: Breaks up into smaller pieces, on maturation each fragment grows into new individual.

Q4: Which cells are responsible for budding in Hydra?

Answer: Regenerative cells

Q5: On which plant can you find buds on its leaves?

Answer: Bryophyllum

Q6: Write the scientific name of the bread mould.

Answer: Rhizopus

Sunday 30 October 2011

Class 10 - Biology - How Do Organisms Reproduce? (Very Short Questions)

Very Short answer Questions asked in board examinations. 

Q1: Why simply copying of DNA in a dividing cells not enough to maintain continuity of life?
Q2: How does plasmodium undergo fission?
Q3: How spirogyra reproduces by fragmentation?
Q4: Which cells are responsible for budding in Hydra?
Q5: On which plant can you find buds on its leaves?
Q6: Write the scientific name of the bread mould,
Q7: Name the structure into which following develops : the plumule and radicle?
Q8: Where are the testes located in human beings?
Q9: For what specific reason have the testes specific location?
Q10: Correlate the rate of general body growth and maturation of reproductive tissue during
puberty?