CBSE Class Notes Online – Classnotes123
CBSE Class Notes, Worksheets, Question Answers, Diagrams , Definitions , Diffrence between , Maths Concepts, Science Facts Online – Classnotes123
Fertilization Pollination is followed by Fertilization in Plants. Fertilization is the process of fusion of male germ cells with the female gametes. It gives rise to a zygote. As soon …
What is Fertilization Class 10 Read More
Agents of cross-pollination The two commonest agents of cross-pollination are insects and wind. But, some flowers are also pollinated by certain animals and birds, like squirrels, bats, etc., or even …
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Define Pollination- The transfer of pollen grains from the anther of the stamen to the stigma of a flower is termed as Pollination.The pollen grains can be transferred by various …
What is Pollination Class 10 Read MoreReproduction is the ability of living organisms to produce new individuals similar to them. The basic event is the creation of DNA copy and additional cellular apparatus by the cells …
Why is DNA copying an essential part of the process of Reproduction? Read More
Plant Hormones – auxins , Gibberellins, Cytokinins, Ethylene, Abscisic acid (ABA), explained with their functions
What are Plant Hormones – Class 10 Read More
In females, ovaries release ovum or egg once every 28 days from the age of puberty. The uterus prepares itself every month to receive a fertilized egg. Thus, its lining …
Why does Menstruation occur- Class 10 Read More
METHODS OF CONTRACEPTION The common methods of contraception are as follows: 1. Hormonal Methods (Pills) : Various hormonal preparations come in the form of tablets or pills (commonly called contraceptive …
What are the Different Methods of Contraception – Class 10th Read More
The Female Reproductive System consists of the following Reproductive Organs. 1. A Pair of Ovaries 2. A Pair of Oviducts (or Fallopian Tubes) to convey the egg released from the …
Female Reproductive System – Class 10 Read More
Transportation in Human Beings explained for Class 10th with definitions types, structures, characteristics, composition, functions, mechanism, processes and diagrams
Transportation in Human Beings Class 10 Read More
Blood enters the heart through the superior and inferior vena cava, then passes through the right atrium and right ventricle before being pumped to the lungs for oxygenation. Oxygen-rich blood returns to the heart via the pulmonary veins and enters the left atrium and left ventricle.Blood flow is controlled by valves that open and close to regulate the direction and volume of blood flow.
How Blood Flow in Heart ? Read More