Smart BioNotes & diagrams

  🧬 50 Most Important MCQs on Reproduction (With Answers) Introduction: Reproduction is a biological process through which living organisms produce their offspring to continue their species. It is one of the most important topics in biology and often appears in exams. Here are 50 most important and repeated MCQs on Reproduction — ideal for quick revision, board exams, and entry test preparation. MCQs on Reproduction (With Answers) 1. The process by which living organisms produce new individuals is called: A) Respiration B) Reproduction C) Growth D) Excretion Answer: B) Reproduction 2. Which of the following is an example of asexual reproduction? A) Fertilization B) Budding C) Copulation D) Pollination Answer: B) Budding 3. The fusion of male and female gametes is known as: A) Pollination B) Fertilization C) Germination D) Budding Answer: B) Fertilization 4. Binary fission commonly occurs in: A) Amoeba B) Hydra C) Yeast D) Planaria Answer: A) A...

  Endocrine System MCQs with Answers The endocrine system plays a vital role in maintaining homeostasis in the human body by secreting hormones that regulate different physiological processes. Below are 25 important and repeated MCQs on the Endocrine System with answers , useful for MDCAT, NEET, board exams, and other competitive tests. Endocrine System – MCQs 1. Which of the following glands is both endocrine and exocrine in function? A) Pituitary gland B) Thyroid gland C) Pancreas D) Adrenal gland Answer: C) Pancreas 2. The “master gland” of the body is: A) Pituitary gland B) Thyroid gland C) Hypothalamus D) Adrenal gland Answer: A) Pituitary gland 3. Which hormone regulates the basal metabolic rate (BMR)? A) Insulin B) Thyroxine C) Glucagon D) Cortisol Answer: B) Thyroxine 4. Insulin is secreted by: A) Alpha cells of pancreas B) Beta cells of pancreas C) Delta cells of pancreas D) Acinar cells of pancreas Answer: B) Beta cells of pancreas 5. Whic...

  Disorders of Nervous System MCQs with Answers (25 Questions) The nervous system controls and coordinates all the functions of our body. Sometimes, it may suffer from different disorders such as Alzheimer’s disease, Parkinson’s disease, epilepsy, multiple sclerosis, stroke, and many more. To help students and exam aspirants, here we have compiled 25 most important multiple-choice questions (MCQs) on disorders of the nervous system with answers . These questions are very useful for entry tests, medical exams, and quick revision. MCQs on Disorders of Nervous System 1. Which disease is caused by the degeneration of dopamine-producing neurons in the brain? a) Alzheimer’s disease b) Parkinson’s disease c) Epilepsy d) Stroke Answer: Parkinson’s disease 2. Alzheimer’s disease primarily affects which part of the brain? a) Cerebellum b) Hippocampus c) Medulla d) Hypothalamus Answer: Hippocampus 3. Which of the following is NOT a symptom of Parkinson’s disease? a) Tremor...

  Human Nervous System – 25 Most Important MCQs with Answers The human nervous system is one of the most vital systems in the body. It controls body functions, processes information, and coordinates responses. Below are the 25 most important and repeated MCQs on the Human Nervous System with answers that are useful for exams and quick revision. 1. Functional unit of nervous system is: a) Axon b) Neuron ✅ c) Dendrite d) Brain 2. Which part of the brain controls balance and posture? a) Cerebrum b) Cerebellum ✅ c) Medulla oblongata d) Pons 3. Largest part of human brain is: a) Cerebellum b) Medulla c) Cerebrum ✅ d) Hypothalamus 4. Which nerve connects eye to brain? a) Auditory nerve b) Optic nerve ✅ c) Olfactory nerve d) Vagus nerve 5. Sympathetic nervous system is a part of: a) Central nervous system b) Peripheral nervous system c) Autonomic nervous system ✅ d) Somatic nervous system 6. Which lobe of cereb...

  100 Important MCQs on Reproduction (With Answers) Reproduction is one of the most important topics in Biology, especially for board exams, entry tests, and competitive exams. Here we have compiled 100 most important and repeated MCQs on Reproduction with their correct answers. These are arranged neatly so you can easily practice and revise. Asexual and Sexual Reproduction The type of reproduction that involves a single parent is called: Answer: Asexual reproduction The fusion of male and female gametes is known as: Answer: Fertilization Binary fission occurs in: Answer: Amoeba Which of the following reproduces by budding? Answer: Hydra Vegetative reproduction in plants occurs through: Answer: Roots, stems and leaves Which of the following is not a type of asexual reproduction? Answer: Pollination Sexual reproduction involves: Answer: Two parents Male gamete in plants is found in: Answer: Anther Female gamete in plants is: Answer: Egg cell ...

  Types of Coordination – 25 Most Important and Repeated MCQs with Answers Coordination in living organisms is very important to maintain balance, control, and communication between different organs. In humans, coordination mainly occurs through two systems: Nervous coordination → Fast and short-lived, controlled by neurons. Chemical (hormonal) coordination → Slow but long-lasting, controlled by hormones. Below are the 25 most important and repeated MCQs on types of coordination, very helpful for MDCAT, CSS, PMS, and other entry tests. MCQs on Types of Coordination 1. Coordination in organisms is mainly carried out by: A) Skeletal system B) Circulatory system C) Nervous and endocrine system D) Excretory system Answer: C) Nervous and endocrine system 2. Nervous coordination is based on: A) Hormones B) Neurons C) Blood vessels D) Glands Answer: B) Neurons 3. Chemical coordination is mainly controlled by: A) Neurons B) Muscles C) Hormones D) Recept...

  Homeostasis in Humans – 25 Most Important and Repeated MCQs with Answers Homeostasis is the process through which the human body maintains a stable internal environment despite changes in the external environment. It involves excretion, osmoregulation, temperature regulation, and hormonal balance . For exam preparation (like MDCAT, PPSC, and other biology tests), here are 25 most important and repeated MCQs on Homeostasis in Humans with answers. MCQs on Homeostasis in Humans 1. The process of maintaining a stable internal environment in the body is called: a) Metabolism b) Homeostasis c) Assimilation d) Anabolism ➡️ Answer: b) Homeostasis 2. The functional unit of the kidney is: a) Alveolus b) Nephron c) Neuron d) Bowman’s capsule ➡️ Answer: b) Nephron 3. Which organ plays the main role in excretion of nitrogenous waste? a) Liver b) Lungs c) Kidney d) Skin ➡️ Answer: c) Kidney 4. In humans, urea is formed in the: a) Kidney b) Liver c) Lungs d) Hear...