10th Class Biology
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Our environment
Introduction: We often hear the word environment in our daily life—on television, in newspapers, and from…
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Reproductive Health
What is Reproductive Health? It means physical, mental, and social well-being related to reproduction. It is…
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What Happens When the Egg Is NOT Fertilised?
Every month: Ovary releases one egg. Uterus prepares for pregnancy But… If no sperm meets the…
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Human Reproductive System
Humans reproduce sexually. Two systems are involved: Male Reproductive System Female Reproductive System Male Reproductive System…
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Reproduction in Human Beings
1. Mode of Reproduction in Humans Humans reproduce by sexual reproduction. Sexual Reproduction means: 2. Growth…
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SEXUAL REPRODUCTION
What is Sexual Reproduction? A single individual cannot produce offspring alone. Why Do Organisms Need Sexual…
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MODES OF REPRODUCTION USED BY SINGLE ORGANISMS
(Asexual Reproduction) What is Asexual Reproduction? 1. FISSION Meaning: In unicellular organisms, reproduction occurs by cell…
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THE IMPORTANCE OF VARIATION
What Is Variation? Variation means small differences found among individuals of the same species. Example: Organisms…
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DO ORGANISMS CREATE EXACT COPIES OF THEMSELVES?
Short Answer: No, organisms do not make exact copies of themselves. They produce similar but not…
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HOW DO ORGANISMS REPRODUCE?
Introduction: All living organisms—plants, animals, and even tiny microorganisms—have one important thing in common: they can…
The Bio Brief 