NCERT Exemplar Class 10 Science Chapter 7 Solutions: Control and Coordination
NCERT Exemplar Class 10 Science Solutions for Chapter 7 ‘Control and Coordination’ provide you with a detailed look at the control and coordination in humans as well as plants. Ever wondered why we immediately pull back our hands when we touch something hot or why the leaves of the ‘touch-me-not plant’ fold up and drop when we touch them? You will find the answers to these questions through the NCERT Exemplar Class 10 Science problems of this chapter.
NCERT Exemplar Class 10 Science Chapter 7 has 28 questions in total which include multiple-choice questions, short answer questions, and long answer questions. All these questions will help you understand all about In this chapter, you will learn about the nervous system, reflex actions, the human brain, hormones in animals, hormones in animals, etc. These questions are based on the CBSE Class 10 exam pattern hence are very important to prepare well for the exams.
Our subject matter experts have explained every NCERT Exemplar problem of Chapter 7 of Class 10 Science step-by-step which will ensure a better understanding of the concepts. The team has years of experience and aims to create world-class learning content for you. All the solutions provided are easy to comprehend and as per the latest CBSE Class 10 Science syllabus.
Important Topics for NCERT exemplar class 10 science solutions chapter7: Control and Coordination
Animal Nervous System: The nervous system majorly collects sensory input from the body and the external environment. It then processes and interprets the sensory input and finally responds appropriately to the sensory input. All the information from the environment is detected by some nerve cells present in our body. The nervous system also has receptors that are usually located in our sense organs.
The Neuron: It is the structural and functional unit of the nervous system and comprises:
- cell body
- Nerve ending
Reflex Actions: As the word suggests, Reflex actions are involuntary actions. These actions are the automatic response to a stimulus. Forex. Coughing, blinking, etc. Pulling back our hands when we touch something hot is also a reflex action.
Reflex Arcs: Reflex arc refers to the passage taken by nerve impulses in a reflex action. There are two types of reflexes :
- spinal reflexes that include only the spinal cord
- cerebral reflexes that include only the brain
Forebrain: The most significant part of the brain
It is the anterior part of the brain and includes Cerebrum, Hypothalamus, Thalamus. It majorly controls reproductive functions like body temperature, hunger, emotions, sleep, etc.
Midbrain: Smallest and central part of the brain
It includes Tectum and Tegmentum
Hindbrain: The central region of the brain
It is composed of Cerebellum, Medulla, and pons. Its primary function is to coordinate all life processes necessary for survival. For example, breathing.
Control and Coordination in Plants: Plant hormones or plant growth regulators are responsible for control and coordination in plants. Plants do not have a nervous system, but they still coordinate differently. This section will help you understand the movement of leaves of the sensitive plant, which is different from the action of a shoot towards the light. You will also learn some plant hormones like gibberellins, auxins, Cytokinins, etc.
Hormones in Animals: Hormones are the chemical substances produced in the body that controls and regulates the activity of cells and organs. Hormones are secreted by endocrine glands and have specific functions.
Some essential hormones in animals are :
- Growth hormone secreted by the Pituitary gland. It Stimulates growth in all organs
- Thyroid hormone secreted by the thyroid gland. It regulates metabolism for body growth.
- Insulin which regulates blood sugar level.
- Testosterone secreted by testes. It plays a vital role in the development of male reproductive tissues
- Estrogen hormone secreted by Ovaries. Its function includes the development of female sex organs, regulates the menstrual cycle, etc.
- Adrenaline secreted by the Adrenal gland. It controls functions such as the heart rate, dilation of the pupils, etc.
Exercise Discussion of NCERT Science Exemplar Solutions Class 10 Chapter 7: Control and Coordination
- The exercise of this chapter comprises 53 questions. The practice is divided into 3 sections- multiple-choice questions, short answer questions, long answer questions.
- There are 33 multiple-choice questions. You have to choose the correct answer from the given options.
- The second section contains 11 short answer questions. In these questions, you will find some important concepts like hormones and their functions. You will also find some general definitions in this section.
- The third set of questions has 9 long answer questions. These problems assess your complete understanding of the chapter. In this set, you will find questions on the human brain, reflex actions, nervous system etc. In long answer questions, you can draw diagrams to gain good marks like in question no. 46, you have to draw a diagram of the human brain along with the explanation.
Why Use NCERT Science Exemplar Solutions Class 10 Chapter 7: Control and Coordination by Instasolv?
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