CBSE Class 10 - Science - Ch 16 - Management of Natural Resources (Worksheet)

Management of Natural Resources

(Worksheet)

Recycling is important for ecological stability
credits:openclipart

Fill in the blanks

1. ________________ is a group of bacteria, found in human intestines, whose presence in water indicates contamination by disease-causing microorganisms.

2. The ______ of water is something that can easily be checked using universal indicator.

3. The three R’s to save the environment are __________, ___________ and ___________.

4. _________ means that you use less.

CBSE Class 10 - Science - How do Organisms Reproduce? (Formative Assignment)

How do Organisms Reproduce? 

(Formative Assignment)

Q(Teachers FA Manual): Fill up the a crossword puzzle as per the clues given below:

NTSE SAT Quiz-15 (Biology)

NTSE SAT Quiz-15 (Biology)

Biology Quiz

Q1: Which of the following is a Gram positive bacteria?

(a) Cyanobacteria
(b) Eschericilia
(c) pseudomonas
(d) Preumococus

Q2: Cell wall in cork is impervious to water and gases due to the presence of 

(a) Lignin
(b) Suberin
(c) Cellulose
(d) Pectin

CBSE Class 10 - Science - CH8 - How do Organisms Reproduce? (MCQs)

Class 10 - Biology - How do Organisms Reproduce? 

Cross-section of Flower
credits: clker.com

MCQs

Q1(FA Manual): The information source for making proteins is

(a) Rough Endoplasmic reticulum
(b) DNA
(c) Hormones
(d) Enzymes

CBSE Class 10 - Science - Ch14 - Sources of Energy

Sources of Energy 

(Q & A)

Q1: Fill in the blanks.
(a) Hydro power plants convert _________ energy of falling water into electricity.

(b) When wood is burnt in a limited supply of oxygen, ______ is left behind as residue.

(c) Gases like ______, _____, ______ and ______ are generated in a biogas plant.

(d) Biogas contains _____ % methane.

(e) To maintain the required speed of the turbine, wind speed should be higher than _____.

(f) To establish 1 MW generator, the wind energy farm needs about ___ hectares of land.

(g) Ocean Thermal Energy plants can operate if the temperature difference between the water at the surface and water at depths up to ______ km is _______ or more.

(h) ______ and _______ countries have number of power plants based on geothermal energy.

Answer:

Branches of Biology

Eye of Jumping Spider
Photo by Thomas Shahan; Source: Flickr

Branches of Biology

1. Biology: study of  living organisms.

2. Botany:  study of plants.

3. Zoology: study of animals.

4. Morphology: study of internal and external structures of organisms (plants and animals) organs.

5. Histology: study of tissues.

CBSE - Class X - Science - Ch7 - Control and Coordination

Human Brain
(credits:wpclipart.com)

MCQs, NCERT Chapter Solutions, Q & A

Q1: The plant hormone which is essential for cell division is
(a) Ethylene
(b) Auxin
(c) Gibberellin
(d) Cytokinin

Answer:  (d) Cytokinin

Class 10 - Biology - CH6 - Life Processes (#cbsenotes)

Life Processes

MCQs, NCERT Chapter Solutions and other Q & A

☛ See Quiz Life Processes


Q1. The kidneys in human beings are a part of the system for
(a) nutrition.
(b) respiration.
(c) excretion.
(d) transportation.

Answer: (c) excretion.


Q2. The xylem in plants is responsible for
(a) transport of water.
(b) transport of food.
(c) transport of amino acids.
(d) transport of oxygen.

Answer: (a) transport of water.

Class 10 - Science - Ch9 - Heredity and evolution (Q & A)+NCERT Solutions

Heredity and evolution 

(Q & A)+NCERT Solutions 

Apeman evolution

Q1: Define Heredity.

Answer: Heredity refers to the process by which certain features (heritable characteristics) are transmitted from parent to offspring.

Q2: Define Variation.

Answer: Offsprings of same parents do not exactly resemble each other as well as to their parents.  It is known as variation.

Explore Biodigital Human Body in 3D

The website BioDigitalHuman provides interactive 3D Human body and anatomical systems views.

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.

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.

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

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?