Topics
Transportation in Plants
- Transport System in Plants
- Complex Permanent Tissue: Xylem Structure and Function (Conducting Tissue)
- Complex Permanent Tissue: Phloem Structure and Function (Conducting Tissue)
- Differences Between Xylem and Phloem
- Diffusion
- Forces Contributing to Ascent of Sap
- Root Pressure
- Factors Affecting the Rate of Transpiration
Reproduction in Plants
- Sexual Reproduction in Plants
- Pollination
- Fertilisation in Flowering Plants
- Artificial Pollination
Reproduction in Humans
Ecosystems
- Forests: Our Lifeline
- Food Chain
- Food Web
- Energy Pyramid
- Risks to Ecosystem
- Need to Restore and Conserve the Ecosystems
Human Body: Endocrine System
- Chemical Coordination
- Human Endocrine Glands and Harmones
- Concept of Adolescence
- Physical Changes
- Adolescence and the Related Psychological Changes
- Types of Hygiene: Personal Hygiene
- Stress Management
Human Body: Circulatory System
Human Body: Nervous System
- Control and Co-ordination in Human Being
- Nerve Fibres
- Major Division of the Nervous System
- Types of Reflexes
- Reflex Arc
Health and Hygiene
- Hygiene
- Categories of Disease
- Spread of Communicable Diseases
- Viral Diseases
- Vector Borne Diseases
- Principles of Prevention of Diseases
- First Aid and Emergency Action
- Tobacco Abuse
- Alcohol Abuse
- Health
Food Production
- Bacteria
- Useful Role of Bacteria in Industry
- Useful Role of Bacteria in Food Industry
- Useful Role of Bacteria in Medicine
- Useful Role of Bacteria in Agriculture
- Fungi
- Economic Importance of Fungi
- Crop and Its Types
- Horticulture
- Types of Farming in India > Organic Farming
- White Revolution
- Meat Providing Livestock
- Animal Husbandry (Livestock) > Poultry Farm Management
- Aquaculture
- Animal Husbandry (Livestock) > Pisciculture (Fish Farming)
- Animal Husbandry (Livestock) > Apiculture (Bee Farming)
Estimated time: 3 minutes
Maharashtra State Board: Class 12
Key Points: Chemical Coordination
- Chemical coordination is the process by which cells and organisms communicate using chemical signals.
- There are four types of chemical signaling: autocrine, paracrine, endocrine, and pheromones.
- Hormones are chemical messengers that regulate various body functions.
- Hormones are classified based on their chemical nature into amines, peptide/protein hormones, steroid hormones, fatty acid derivatives, and gases.
- Examples include epinephrine and thyroxine (amines), insulin and growth hormone (proteins), estrogen and testosterone (steroids), prostaglandins (fatty acids), and nitric oxide (gas).
