Kazi Zaker Hossain is the founder of the Zoology Department of Dhaka University. What is ICZN?Mental Behavior, its classification and ways of removing mental anxietyWho is Mona Hammond?
True fruits develop from ovaries. False fruits develop from any other part of the plant except ovaries. These parts include exocarp, mesocarp, and endocarp. As apple does not grow from the ovary, it is called a false fruit. What do you mean by fruit body?Why the flowers and fruits are coloured?What are the benefits of … Read more
A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another. Or, Staring from plant source the transfer of energy by eating and being eaten up by different animals, is known as food chain.
Reproduction is a fundamental process for all living organisms, ensuring the continuity of life on Earth. It involves the production of new individuals, similar to their parents, thereby perpetuating the species. Without reproduction, species would eventually become extinct, as individuals have a limited lifespan. Reproduction plays a crucial role in maintaining ecological balance. It … Read more
Photosynthesis is an endothermic reaction because it requires energy to proceed. This energy comes from sunlight, which is absorbed by chlorophyll in the chloroplasts of plant cells. The absorbed energy is used to convert carbon dioxide and water into glucose and oxygen. The products of photosynthesis, glucose and oxygen, have more energy than the reactants, … Read more
Menstruation, also known as a period, is a normal part of a woman’s reproductive cycle. It occurs when the lining of the uterus, called the endometrium, sheds and passes out of the body through the vagina. This shedding happens because the body prepares itself for a possible pregnancy each month. If no pregnancy occurs, the … Read more
Blood is a fluid connective tissue. Blood is called connective tissue because like all other connective tissues the amount of plasma is more in blood and the amount of cells is less. Other connective tissues and blood originate from the same layer of the embryo. Blood keeps the connection between different parts of the body … Read more
Plants can utilize chlorophyll to synthesize their food through photosynthesis. Unlike plants, humans do not process chlorophyll, so they can not synthesize food. Thus, they depend on other organisms for their food. Hence, humans are called heterotrophs.