SEBA Class 10 Science Important Chapter 7 Control and coordination Solutions English Medium As Per SEBA New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 10 Science Additional Solutions in English and select need one. SEBA Class 10 General Science Additional Notes English Medium Download PDF. SEBA Important Solutions for Class 10 Science.
SEBA Class 10 Science Important Chapter 7 Control and coordination
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. Assam SEBA Board Class 10 General Science Additional Question Answer are part of All Subject Solutions. Here we have given SEBA Class 10 Science Important Question Answer English Medium for All Chapters, You can practice these here.
Control and coordination
Chapter: 7
| IMPORTANT QUESTION ANSWER |
Q.1. Define tropic movements.
Ans: Directional growth movement of a plant due to an external stimulus is called a tropic movement. Movement can be either toward the stimulus or away from the stimulus.
Q.2. What is phototropism?
Ans: Phototropism is plant growth in response to a source of light. Plants usually grow towards available light sources to enhance their ability to photosynthesize. Photosynthesis is the process by which plants manufacture energy from sunlight.
Q.3. What is geotropism?
Ans: The movement of plant parts in response to the direction of gravity is known as geotropism.
Q.4. What is chemotropism?
Ans: Chemotropism is the movement of plant in response to the chemicals e.g., movement of pollen tube towards ovule in response to the sugary molecule.
Q.5. Define photoperiodism.
Ans: Photoperiodism is the physiological reaction of organisms to the length of night or a dark period. It occurs in plants and animals. Plant photoperiodism can also be defined as the developmental responses of plants to the relative lengths of light and dark periods.
Q.6. What is phytochrome?
Ans: Plants respond to photoperiodic stimulus by a specialised pigment called phytochrome.
Q.7. What is reflex action?
Ans: An involuntary or instantaneous action by the human body parts in response to a stimulus is called reflex action. It is because of numerous neural pathways that are known as reflex arcs that act on an impulse before it reaches the brain. Reflex action doesn’t need any conscious thought or awareness about the automatic response.
Q.8. What happens when bright light is focussed one eyes?
Ans: Events when a bright light is focused on your eyes:
1. When a strong light shines into our eyes, the receptor cell takes the information and sends it to the sensory neuron, which then sends it to the brain, where it is reverted by a motor neuron, which closes the pupil.
2. When strong light is focused on the eyes, the chain of events begins with the receptor, which transmits impulses to the sensory neuron, which sends them to the brain.
3. The impulse passes from the brain to the eye through the motor neuron, specifically the ocular muscles, which contract in response.
4. The iris controls the diameter and size of the pupil, which governs the quantity of light entering the eyes.
Q.9. Give two example of reflex action.
Ans: Reflex action is defined as an unconscious and involuntary response of effectors to a stimulus.
Example:
(i) Touching a hot object stimulus we immediately remove our hand from it
(ii) Daily life are watering of mouth on seeing food sneezing blinking of eyes and yawning.
Q.10. What are the three basic region of brain?
Ans: The brain can be divided into three basic units:
(i) Forebrain.
(ii) Midbrain.
(iii) Hindbrain.
Q.11. Name two types of gland present in our body.
Ans: Two principal types of glands exist:
1. Exocrine gland. and
2. Endocrine gland.
Q.12. What is the other name of hormone?
Ans: Chemical coordinators.
Q.13. Name the hormone secreted by thyroid gland.
Ans: Thyroxine (thyroid hormone).
Q.14. Write the function of hormone ‘Thyroxin’ in our body.
Ans: Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in metabolism, heart and muscle function, brain development, and maintenance of bones.
Q.15. What is the role of dendrites?
Ans: Dendrites receive the data or signals from another neuron. It receive information from axon of other neuron through synapsis.
Hi! my Name is Parimal Roy. I have completed my Bachelor’s degree in Philosophy (B.A.) from Silapathar General College. Currently, I am working as an HR Manager at Dev Library. It is a website that provides study materials for students from Class 3 to 12, including SCERT and NCERT notes. It also offers resources for BA, B.Com, B.Sc, and Computer Science, along with postgraduate notes. Besides study materials, the website has novels, eBooks, health and finance articles, biographies, quotes, and more.
Buy Now
