Sourav Pan
What is Sperm Cell? Definition of Sperm Cell A sperm cell, or spermatozoon, is the male reproductive cell in sexual reproduction, produced in the testes through the process of spermatogenesis. It is a haploid cell containing half the number of chromosomes and is designed to fertilize a female egg cell, leading to the formation of … Read more
What is Sexual Reproduction? Definition of Sexual Reproduction Sexual reproduction is a biological process in which offspring are produced through the fusion of male and female gametes, resulting in a diploid zygote that develops into a genetically distinct individual. This mode of reproduction promotes genetic diversity and variation within a species. Features of Sexual Reproduction … Read more
What is Skin? Definition of Skin Skin is the body’s largest organ, serving as a protective outer layer that covers and shields internal organs, muscles, and bones. It regulates body temperature, enables sensory perception, synthesizes vitamins, and acts as a barrier against pathogens and environmental damage. Gross Structure of Skin The skin’s composition varies across … Read more
What is Double Circulation? Types of Circulatory Systems In the animal kingdom, circulatory systems are fundamental for the transport of nutrients, gases, and waste products. There are primarily two types of circulatory systems: the open circulatory system and the closed circulatory system. Each of these systems has distinct mechanisms and efficiency levels, catering to the … Read more
Human teeth play a crucial role in the process of digestion, enabling the breakdown of food into smaller, manageable pieces before swallowing. Unlike some animals that can consume food in one large gulp, humans rely on their teeth to perform various functions essential for effective mastication. This article provides an overview of the structure, types, … Read more
What is Transpiration? Types of Transpiration Transpiration in plants occurs through several distinct pathways, each playing a specific role in water movement and evaporation. These pathways are classified into four primary types: stomatal, cuticular, lenticular, and bark transpiration. Factors affecting Transpiration Transpiration is influenced by a variety of factors that can be classified into two … Read more
What are root hair cells? Structure of Root Hair Root hairs are slender, tubular extensions of epidermal cells located at the root tips, specializing in water and nutrient absorption. Their unique structure is optimized for efficient interaction with the soil environment, allowing plants to maximize the uptake of essential resources. Key Components of Root Hair … Read more
What are animal and plant cells? Animal and plant cells serve as the building blocks of life for animals and plants, respectively. Both are eukaryotic cells, meaning they contain a true nucleus and specialized organelles, but they also display significant structural and functional differences. Animal Cells Animal cells are generally smaller and have a flexible, … Read more
Wha is Stomata? Definition of Stomata Stomata are tiny pores located on the epidermis of plant leaves and stems that regulate gas exchange, allowing carbon dioxide, oxygen, and water vapor to enter and exit the plant. Each stoma is flanked by guard cells that control its opening and closing, facilitating processes such as photosynthesis and … Read more
What is Calvin Cycle? The Calvin Cycle, also known as the C3 cycle or Calvin-Benson cycle, is a critical biochemical process in photosynthesis that enables plants to convert carbon dioxide into organic compounds, primarily glucose. Named after Melvin Calvin, who discovered the pathway in the 1950s, this cycle occurs in the stroma of chloroplasts in … Read more
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