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Hormones

Hormones in Animals Endocrine System: The endocrine system is composed of several endocrine glands. A ductless gland is called an endocrine gland . The endocrine gland secretes its product directly into the bloodstream. Hormones are produced in the endocrine glands. Hormone is mainly composed of protein. Hormones assist the nervous system in control and coordination. The nervous do not react to every nook and corner of the body and hence hormones are needed to affect control and coordination in those parts. Moreover, unlike nervous control, hormonal control is somewhat slower. Exocrine Gland: Exocrine glands are glands that discharge secretions using ducts, which open onto an epithelial surface. Hormones: These are the chemical messengers secreted in very small amounts by specialised tissues called ductless glands. They act on target tissues/organs usually away from their source. Endocrine System helps in control and coordination through chemical compound...

Life processes

Life Processes The maintenance of living organisms is essential even if they are moving, resting, or even sleeping. The processes that together maintain life are known as life processes. The various life processes which take place in living organisms are called metabolic activities or metabolism. These life processes can either be anabolic or catabolic in nature. Nutrition, respiration, transportation, and excretion are some of the life processes that are essential for the functioning as well as maintenance of living organisms. Life Processes Nutrition Nutrition is defined as a process by which living organisms procure food or synthesize it and convert it into simple absorbable form by a series of biochemical processes. Nutrient can be defined as a substance that an organism obtains from its surroundings and use as a source of energy as well as providing raw materials for the biosynthesis of body constituents. There are two basic modes of nutrition: autotrophic and heterotrophic. ...

Sex Determination

Sex Determination in can organism very based on defferent machanism : . Temprature -dependent * Determination :In some reptiles , the temperature at which the fertilized eggs are incubated influences the sex of the offspring Environmental influences : In snails sex can change based on environmental factors Sex Determination :In human determination is by genetics : Chromosomes and traits : *Human have 23 pairs of chromosomes . * 22pairs are responsible for determining various traits * The 23rd , pairs know as sex chromosomes determining the sex of the individual . Sex Chromosomes : Females have tow identical X chromosomes(xx). Males have one X and one Y chromosomes (XY).

Budding

It is form of asexual reproduction in which a new organism develops from an outgrowth du to cell division at on specific site e sp

Reproduction in human being

Human used sexual mode of reproducion 1. Sexual maturation The period of life when production of germ cells reproductive cell i,e.ova(female gamers) and sperm (Male gamete)start in the body this period of sexual maturation in human body is called puberty. Change at puberty Common changes in male and female 1. Maturation start is girls at the age 10-12 years 2. 10-12 maturation in boys at the age of 13-14 year. 3. Thick hair growth in some parts that is armpits and ganital area. 4. Thin hair also appearance on lags and arms. 5. Skin become only and pimples be gains to develop Starting of mensuration cycle * there changes singnal that sexual maturity is taking place

अपने मित्र को दीपावली की शुभकामनाएं दीजिए

प्रिया रूप मोहन! तुम्हारा जीवन फुल झाड़ियां की तरह सदा मुस्कुराता फट्टे अनार की तरह उमंग और ऊर्जा से भरपूर अनंत दीपों की तरह प्रकाश में हो/ तुम्हें दीपावली की बहुत-बहुत शुभकामनाएं/ तुम्हारा धर्मवीर राजवंशी

बेरोजगारी के कारण

बेरोजगारी का अर्थ है आजीविका के लिए साधन का ना होना भारत में बेरोजगार अनेक प्रकार की है यहां जितनी जनसंख्या है उतनी मात्रा में नौकरियां नहीं है नौकरियां भी योग्यता के अनुसार नहीं है कुछ लोगों की आजीविका वर्ष भर के लिए ना होकर कुछ महीनो के लिए होती है सब प्रकार की बेरोजगारी युवकों को निराशा और हताश करती है वह ना चाहते हुए भी थक हार कर अपराध जगत की और भटक जाते हैं उन्हें पेट भरने के लिए गलत रास्ते चुन्नी करते हैं या आतंकवाद सबके पीछे बेरोजगारी की भूमिका अवश्य होती है यह समस्या सब समस्याओं की जननी है इसे रोकने को सबसे अधिक महत्व दिया जाना जाना चाहिए उन्नत देशों में लोगों को रोजगार भत्ता मिलता है जिससे उनका निर्वाह हो जाता है भारत में ऐसे बायो की अतिरिक्त बेरोजगार के अवसर बढ़ाने और अधिक ध्यान देना चाहिए

Human Brain: Structure, Functions, and Importance

The Human Brain: Structure, Functions, and Importance The human brain is one of the most fascinating and complex organs in the body. It acts as the control center for our thoughts, emotions, memories, decisions, and movements. Without the brain, life as we know it would not exist. It is not only the seat of intelligence but also the foundation of creativity, emotions, and human behavior. Understanding the human brain helps us appreciate its role in everyday life and how it influences our health, growth, and personality. Structure of the Human Brain The human brain is a part of the central nervous system (CNS), along with the spinal cord. It is located inside the skull and is protected by the meninges (three layers of protective tissue) and cerebrospinal fluid. On average, an adult human brain weighs about 1.3–1.4 kilograms and contains around 86 billion neurons. Despite its small size compared to the whole body, it consumes nearly 20% of the body’s total energy. The brain can be ...

Human brain

Brain is a man coordination cente of recording it has three major part forebrain midbrain hindbrain : 1[ *forebrain]: it is the most complex specialized part of the brain it consists of the cerebrum [Function of forebrain]: *Thanking part of the brainbrain *Control the voluntary actions * store information ( memory) * Centre associated with hunger * receive sensory impulses from various part of the body and integrated 2[mid brain]: it control Involuntary action such our change pupil size 3(Hind brain): it has three part 1cerebrum 2 medulla 3 pins The Human Brain: Structure, Functions & Importance Discover the fascinating world of the human brain, the body’s control center responsible for intelligence, memory, emotions, and movement. This detailed guide (1000+ words) explains the brain’s structure—including the cerebrum, cerebellum, and brainstem—along with their unique functions. Learn how neurons and neurotransmitters transmit signals, how different lobes of the b...

Reproduction

Reproduction👉. Reproduction is the biologyical process by which an organism reproduce a new individuals of the new kind.there are tow types 1. Asexual reproduction 2. Sexual reproduction