Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Anju Kumari 4 years ago
- 0 answers
Posted by Bhavishya Kaushik 4 years ago
- 1 answers
Posted by Usha Jha 4 years ago
- 2 answers
Posted by Neha Rajput 4 years ago
- 1 answers
Meghna Thapar 4 years ago
The lining thickens and is richly supplied with blood to nourish the growing embryo. The embryo gets nutrition from the mother’s blood with the help of a special tissue called placenta.
Placenta is a disc like special tissue which develops between the uterus wall and the embryo after implantation. Its function is the exchange of nutrients, oxygen and waste products between the embryo and the mother. It contains villi on the embryo’s side of the tissue. On the mother’s side are blood spaces, which surround the villi. This provides a large surface area for glucose and oxygen to pass from the mother to the embryo. The developing embryo will also generate waste substances which can be removed by transferring them into the mother’s blood through the placenta. The time period from the fertilisation up to the birth of a baby is called gestation. The average gestation period in humans is about 9 months (about 38 weeks).The child is born as a result of rhythmic contractions of the muscles in the uterus.
Posted by Madhu Bala 4 years ago
- 1 answers
Posted by Suhani Singh 4 years, 1 month ago
- 4 answers
Meghna Thapar 4 years ago
Good conductors are those materials which allow electricity to pass through them easily. Bad conductors are those materials which do not allow electricity to pass through them easily. Copper is considered to be a conductor because it “conducts” the electron current or flow of electrons fairly easily. Most metals are considered to be good conductors of electrical current. Other materials that are sometimes used as conductors are silver, gold, and aluminum.
Posted by Kamal Sheikh 4 years, 1 month ago
- 1 answers
Posted by Surendra Singh 4 years, 1 month ago
- 1 answers
Posted by Kamal Sheikh 4 years, 1 month ago
- 3 answers
Kamal Sheikh 4 years, 1 month ago
Posted by Shivam Gupta 4 years, 1 month ago
- 1 answers
Posted by Sahil Kumar 4 years, 1 month ago
- 1 answers
Posted by Unique #Seraj Ali ??? 4 years, 1 month ago
- 1 answers
Posted by Arbaaz Alam 4 years ago
- 0 answers
Posted by Tiger Shroff 4 years, 1 month ago
- 1 answers
Posted by Ravi Saini 4 years, 1 month ago
- 1 answers
Posted by Chaman Singh 4 years, 1 month ago
- 0 answers
Posted by Latchen Doma Sherpa 3 years, 6 months ago
- 1 answers
Posted by Arbaaz Alam 4 years, 1 month ago
- 1 answers
Posted by Arbaaz Alam 4 years, 1 month ago
- 1 answers
Gaurav Seth 4 years, 1 month ago
परमाणु (Atom): पदार्थ का वह सूक्ष्मतम कण जिसे और आगे विभाजित नहीं किया जा सके वह परमाणु कहलाता है |
अणु (Molecules): एक ही तत्व या भिन्न-भिन्न के दो या दो से अधिक परमाणुओं के समूह जो रासायनिक से एक दुसरे से बंधे होते है अणु कहलाते हैं |
उदाहरण: O2, H2, N2, H2O, CO2, MgCl2 इत्यादि |
यौगिक (Compound): अणु जो एक से अधिक तत्वों से मिलकर बना है यौगिक कहलाता है |
उदाहरण: H2O, CO2, NH3, BrCl2, CH4 इत्यादि |
किसी तत्व के सबसे छोटे कण परमाणु होते हैं | जैसे - हाइड्रोजन के परमाणु (H), ऑक्सीजन के परमाणु (O), कार्बन के परमाणु (C), मैग्नीशियम के परमाणु (Mg) इत्यादि |
Posted by Arbaaz Alam 4 years, 1 month ago
- 0 answers
Posted by Jainarayan Yadav 4 years, 2 months ago
- 1 answers
Seraj Ali ????? 4 years, 2 months ago
Posted by Sabir Sadha 4 years, 2 months ago
- 1 answers
Posted by Neetu Kundansingh 4 years, 2 months ago
- 1 answers
Posted by Saloni Gupta 4 years, 2 months ago
- 0 answers
Posted by Mahajan Kumar 4 years, 2 months ago
- 0 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
