These receptors are usually located in our sense organs, such as the inner ear, the nose, the tongue, and so on. For other questions, please visit to or or or go for Solutions. Video Solution Answer: Chemical coordination takes place in animals with the help of hormones. Do you need to draw a diagram? It is a fast process as compared to aerobic respiration. It is wrapped in three sheets of connective tissue, known as meninges. Movement in our legs is an example of voluntary actions.
It produces less amount of energy as compared to aerobic respiration. The paper is of 90 marks which means your fate depends on it. Fill each of them with water. Our for Class 7 Science are by our subject matter experts. F ii Plants carry out photosynthesis only during the day and respiration only at night. Observe fish in an aquarium.
Science is a scoring subject and if you score well, it can surely help increase your aggregate marks. Video Solution Answer: Nervous system mechanism Hormonal system mechanism 1. Answer 3: a Cerebellum is not functioning properly may affect- i Walking in straight line ii Riding a cycle iii Maintaining the posture and balance of the body iv Movement is very coordinate, the patient sways in walking and tend to fall towards the affected side. Observation: The roots of the germinating seeds will grow towards beaker A. Visit to main page or of the page.
You can learn all this and more here at Vedantu. Along with rock particles, the soil consists of i Water and air ii minerals, air, water and organic matter iii Water and animals iv air, plants and water. Question : Tick the correct answer: a In cockroaches, air enters the body through i lungs ii gills iii spiracles iv skin Answer : iii spiracles b During heavy exercise, we get cramps in the legs due to the accumulation of i carbon dioxide ii lactic acid iii alcohol iv water Answer : ii lactic acid c Normal range of breathing rate per minute in an average adult person at rest is: i 9—12 ii 15—18 iii 21—24 iv 30—33 Answer : ii 15—18 d During exhalation, the ribs i move outwards ii move downwards iii move upwards iv do not move at all Answer: ii move downwards 6. With high score in Science, you will have many more options open for you. Answer 2: Adrenaline causes the heart beat faster, resulting in supply of more oxygen. Measure the breathing rate of the members of your family and some of your friends.
Answer Similarity: i In both aerobic and anaerobic respiration, food is broken down to release energy. The brain also stores information and act as organ of thought and intelligence. Clues about those words are given below the square. These preparations should ideally make it easier to do either activity in the near future. Find out the percentage of people of your area who smoke. A synapse or neuromuscular junction Answer: The thinking part of our brain is the forebrain. Video Solution Answer: Involuntary actions cannot be consciously controlled.
Still have doubts or questions? This type of movement is directional and is growth dependent. It has separate areas that are specialized for hearing, smelling, sight, taste, touch, etc. Would writing the equations get you extra marks or would you just be wasting your time? The signal or messages for these actions are passed to the brain and hence are consciously controlled. Reflex arc Reflex arcs are formed in the spinal cord and the information input reaches the brain. So, how do they respond to stimuli? It produces small amount of energy as compared to aerobic respiration. Question 2 List the similarities and differences between aerobic and anaerobic respiration.
If you would like to know more, please get in touch with our counsellor today! It has larger portions of fine particles. Examples: It occurs in most plants and animals. We need to detect it, and respond to it. Question 4: What is meant by Tropic movement? All these responses enable the body to deal with any stress or emergency. Answer : b The amount of air available to a person is less than that available on the ground.
Fill beaker A with water. When a seed germinates, the root goes down, the stem comes up into the air. Firstly, the leaves of the sensitive plant move very quickly in response to touch. Hence, more O 2 concentration is found in test tube B. It acts as a one way valve to transmit impulses in one direction only.