Receptor ➡️ Sensory neuron➡️ Brain ➡️ Motor neuron ➡️ Eye ➡️ Eye muscle contracts. This process happens almost instantly, allowing us to quickly adapt to different lighting environments.
Trace the sequence of events that occur when a bright light is focused on your eyes. Read More »
Receptors are specialized cells located in sensory organs, which help detect stimuli. ✅ Receptors convert external stimuli into signals that the brain can understand and react to.
Where are different receptors present in our body? What are their functions? Read More »
Adrenaline is often referred to as the “emergency hormone” because it is released in response to stress or danger. It prepares the body for a “fight-or-flight” response by: ✅ Adrenaline is produced by the adrenal glands, which are located on top of the kidneys. It is released into the bloodstream in response to signals from
Tropic movements are directional growth responses of plants to stimuli. They are significant because they help plants grow towards favorable conditions like light and water. Two types: ✅ Tropic movements help plants survive by directing them toward better resources.
✅ The pancreas plays a vital role in both digestion and maintaining glucose levels in the blood.
List two different functions performed by the pancreas. 🍽️ Read More »
In organisms, control and coordination are essential for: ✅ Systems like the nervous system and endocrine system work together to ensure proper coordination between different body parts.
What is the need for a system of control and coordination in an organism? 🧬 Read More »
Plant hormones (also known as phytohormones) are chemical substances that regulate the growth, development, and responses to environmental stimuli in plants. These hormones are produced in specific parts of the plant and transported to other parts, where they trigger various physiological processes. Here are the main types of plant hormones and their functions: 1. Auxins
Abscisic acid (ABA) is called the stress hormone in plants because it helps them survive under stressful conditions like drought 🌵 or cold. When the plant senses stress, ABA signals the stomata (tiny pores on leaves) to close, reducing water loss. ✅ ABA protects plants during stress by conserving water and slowing down growth. All
Iodized salt is recommended because iodine is an essential mineral needed by the body to make thyroid hormones. These hormones regulate growth, metabolism, and brain development, especially in children. 🧠 Lack of iodine can lead to conditions like goiter (enlarged thyroid) and intellectual disabilities in children. ✅ Iodine ensures proper thyroid function and prevents iodine
Diabetes is a chronic medical condition where the body cannot effectively regulate blood sugar (glucose) levels. This happens due to insufficient insulin production, ineffective insulin use, or both. Types of Diabetes: Causes of Diabetes: How Diabetes Can Be Controlled: Controlling diabetes involves lifestyle changes, regular monitoring, and, in some cases, medication to maintain healthy blood
A reflex arc is the pathway through which a reflex action occurs, allowing for quick, automatic responses to stimuli without conscious thought. Here’s a simple explanation and flowchart of the reflex arc process: Flow Chart of Reflex Arc: Summary: The reflex arc ensures rapid responses by directly connecting sensory input to motor output through the
