Read and download free pdf of CBSE Class 11 Biology Neural Control And Coordination Enrichment Worksheet Set A. Students and teachers of Class 11 Biology can get free printable Worksheets for Class 11 Biology Chapter 21 Neural Control and Coordination in PDF format prepared as per the latest syllabus and examination pattern in your schools. Class 11 students should practice questions and answers given here for Biology in Class 11 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 11 Biology Worksheets prepared by teachers as per the latest Biology books and syllabus issued this academic year and solve important problems with solutions on daily basis to get more score in school exams and tests
Worksheet for Class 11 Biology Chapter 21 Neural Control and Coordination
Class 11 Biology students should refer to the following printable worksheet in Pdf for Chapter 21 Neural Control and Coordination in Class 11. This test paper with questions and answers for Class 11 will be very useful for exams and help you to score good marks
Class 11 Biology Worksheet for Chapter 21 Neural Control and Coordination
Fill in the following blanks with suitable words :
(a) The two examples of effectors are .................and .....................
Answer : muscle; glands
(b) Our..................system allows us to react to our surroundings. Information from receptors passes along.................neurons to our brain. Our brain sends impulses along...........neurons to our muscles.
Answer : nervous ; sensory ; motor
(c) A neuron which carries an impulse to the brain is called a .................... neuron.
Answer : sensory
(d) The neuron which carries a message for action to a muscle or gland is known as a.................... neuron.
Answer : motor
Important Questions for NCERT Class 11 Biology Neural Control and Coordination
Ques. Which part of the human ear plays no role in hearing as such but is otherwise very much required?
(a) Eustachian tube
(b) Organ of corti
(c) Vestibular apparatus
(d) Ear ossicles
Answer : C
Ques. Select the answer with correct matching of the structure, its location and function.
Structure Location Function
(a) Eustachian tube Anterior part of Equalizes airpressure on
internal ear either sides of tympanic membrane
(b) Cerebellum Midbrain Controls respiration and gastric secretions
(c) Hypothal -amus Forebrain Controls body temperature, urge for eating
and drinking
(d) Blind spot Near the place where Rods and cones are present
optic nerve leaves butinactive here
the eye
Answer : C
Ques. Which one of the following pairs of structures is correctly matched with their corrected description?
Structures Description
(a) Tibia and fibula Both form parts of knee joint
(b) Cartilage and cornea No blood supply but do require oxygen for respiratory need
(c) Shoulder joint and Ball and socket type of joint
elbow joint
(d) Premolars and molars 20 in all and 3 rooted
Answer : B
Ques. Cornea transplant in humans is almost never rejected. This is because
(a) it is composed of enucleated cells
(b) it is a non-living layer
(c) its cells are least penetrable by bacteria
(d) it has no blood supply.
Answer : B
Ques. Bowman’s glands are located in the
(a) anterior pituitary
(b) female reproductive system of cockroach
(c) olfactory epithelium of our nose
(d) proximal end of uriniferous tubules.
Answer : C
Ques. Bowman’s glands are found in
(a) juxtamedullary nephrons
(b) olfactory epithelium
(c) external auditory canal
(d) cortical nephrons only.
Answer : B
Ques. When we migrate from dark to light, we fail to see for sometime but after a time visibility becomes normal. It is example of
(a) accomodation
(b) adaptation
(c) mutation
(d) photoperiodism.
Answer : B
Ques. Which of the following statements is the characteristics of human cornea?
(a) It is secreted by conjuctiva and glandular layer.
(b) It is a lacrimal gland which secrete tears.
(c) Blood circulation is absent in cornea.
(d) In old age it becomes the cause of cataract.
Answer : C
Ques. In the chemistry of vision in mammals, the photosensitive substance is called
(a) rhodopsin
(b) melanin
(c) sclerotin
(d) retinol.
Answer : A
Ques. Light rays entering the eye is controlled by
(a) pupil
(b) iris
(c) cornea
(d) lens.
Answer : A
Ques. Retina is most sensitive at
(a) optic disc
(b) periphery
(c) macula lutea
(d) fovea centralis.
Answer : D
Ques. Function of iris is to
(a) move lens forward and backward
(b) refract light rays
(c) bring about movements of eye lids
(d) alter the size of pupil.
Answer : D
Ques. Iris is part of
(a) sclerotic
(b) choroid
(c) choroid and retina
(d) sclerotic and choroid.
Answer : D
Ques. Sensitive pigmented layer of eye is
(a) cornea
(b) retina
(c) sclerotic
(d) iris.
Answer : B
Ques. Which one of the following is the correct difference between rod cells and cone cells of our retina?
Rod cells Cone cells
(a) Overall function Vision in poor light Colour vision and detailed vision in
bright light
(b) Distribution More concentrated in Evenly distributed all over retina
centre of retina
(c) Visual acuity High Low
(d) Visual pigment Iodopsin Rhodopsin
contained
Answer : A
Short Answer Type Questions
Question. (a) What are the various sense organs in our body ?
(b) What is meant by receptors and effectors ? Give two examples of each.
Answer : (a) There are five sense organs in our body. They are the eyes, the ears, the nose, the tongue and the skin.
(b) A receptor is a cell present in the sense organs that are sensitive to specific stimuli.
Example: The eyes have light receptors which can detect light and the ears have sound receptors which can detect sound.
Question. (a) What is spinal cord ? What is its main function ?
(b) Give the functions of medulla.
Answer : (a) The spinal cord is a part of the central nervous system. It is a cylindrical structure enclosed by a bony cage called the vertebral column. It is responsible for spinal reflex actions and the conduction of nerve impulses to and from the brain.
(b) The medulla controls various involuntary actions such as the heartbeat, breathing, blood pressure and peristaltic movements of the alimentary canal.
Question. (a) Name the three types of nerves which constitute the peripheral nervous system.
(b) What is the difference between a reflex action and walking ?
(c) How do we detect the smell of an incense stick (agarbatti) ?
Answer : (a) The three types of nerves which make up the peripheral nervous system are the spinal nerves, the cranial nerves and the visceral nerves.
(b) Reflex action Walking
A reflex action is an involuntary action that is a rapid and automatic response to stimuli. Walking is a voluntary action that requires our thinking and is under our control.
(c) When the smell of the incense stick reaches our nose, the olfactory receptors present in our nose detect it and send this information to our brain in the form of electrical signals. The brain interprets this information as the smell of incense stick where it has been already stored
Question. (a) What substances are made by endocrine glands ?
(b) What is the function of receptors and effectors in our body ?
Answer : (a) The endocrine glands secrete chemical substances called hormones.
(b) Receptors receive stimuli from the surrounding environment and send the messages conveyed by them to the spinal cord and the brain as electrical impulses through the sensory nerves. On the other hand, effectors respond to stimuli according to the instructions sent from the nervous system.
Question. (a) Name the hormones secreted by the following endocrine glands :
(i) Thyroid gland (ii) Parathyroid glands (iii) Pancreas (iv) Adrenal glands
(b) Write the functions of testosterone and oestrogen hormones.
Answer : (a)
(i) Thyroxine
(ii) Parathormone
(iii) Insulin
(iv) Adrenaline
(b) The functions of testosterone hormone are to control the development of male sex organs and male characters such as deepening of voice, moustache, beard and other body hair.
The functions of oestrogen hormone are to control the development of female sex organs and female characters such as feminine voice and soft skin.
Question. (a) Write the names of the regions in hindbrain. Give one function of each region.
(b) Name the functions of cerebrum.
Answer : (a) The hindbrain has three regions: the pons, the cerebellum and the medulla.
The pons takes part in regulating the respiration.
The cerebellum helps in maintaining posture and balance of the body.
The medulla controls various involuntary actions such as the heartbeat, breathing, blood pressure and peristaltic movements of the alimentary canal.
(b) The cerebrum is the logical part of the brain. It is the site of our faculties such as learning, reasoning, intelligence, personality and memory. All of our thoughts, sensations, actions and movements are controlled by the cerebrum.
Question. (a) The human brain can be broadly divided into three regions. Name these three regions.
(b) What is cranium ? What is its function ?
Answer : (a) The hindbrain has three regions: the pons, the cerebellum and the medulla.
The pons takes part in regulating the respiration.
The cerebellum helps in maintaining posture and balance of the body.
The medulla controls various involuntary actions such as the heartbeat, breathing, blood pressure and peristaltic movements of the alimentary canal.
(b) The cerebrum is the logical part of the brain. It is the site of our faculties such as learning, reasoning, intelligence, personality and memory. All of our thoughts, sensations, actions and movements are controlled by the cerebrum.
Question. (a) How does chemical coordination take place in human beings ?
(b) Why is the use of iodised salt advisable ?
Answer : (a) Chemical coordination takes place through hormones in human beings. Hormones instruct the brain when to pace up or slow down a particular function.
(b) Iodised salt contains iodine which is essential for making thyroxine by the thyroid gland.
Question. What is the function of insulin hormone ? What type of patients are given insulin injections ?
Answer : The function of insulin hormone is to lower the blood sugar level. Insulin controls the metabolism of sugar. Deficiency of insulin causes diabetes. Diabetic patients are treated by giving injections of insulin.
Question. Compare the nervous system and endocrine system (hormonal system) for control and coordination in humans.
Answer : Nervous system: The nervous system refers to the brain, nerves, spinal cord, ganglia, and other receptor organs that receive and interpret stimuli.
1. Made of neurons.
2. Messages are transmitted in the form of electric impulses.
3. Messages are transmitted along nerve fibers.
Endocrine system: The endocrine system comprises endocrine glands and hormone-producing dispersed tissues/cells distributed throughout our bodies.
1. Made of secretory cells called glands.
2. Messages are transmitted in the form of chemicals called hormones.
3. Messages are transmitted through the bloodstream
Question. State the functions of the following hormones :
(a) Thyroxine (b) Adrenaline (c) Growth hormone
Answer : (a) The function of thyroxine hormone is to control the rate of metabolism of carbohydrates, fats and proteins in the body.
(b) The function of adrenaline hormone is to regulate heartbeat, breathing rate, blood pressure and carbohydrate metabolism.
(c) The function of growth hormone is to control the development of bones and muscles.
Question. Write the names of all the major endocrine glands present in the human body. Which of these glands also function as exocrine glands ?
Answer : (a) The five endocrine glands found in the human body are:
Pituitary gland which secretes growth hormone.
Thyroid gland which secretes thyroxine hormone.
Parathyroid gland which secretes parathormone.
Pancreas which secretes insulin.
Adrenal glands which secrete adrenaline.
(b) Hormones reach the target organ through the blood and act on it.
(c) Hypothalamus regulates the secretion of hormones from the pituitary gland.
(d) An increase in the amount of adrenaline in our body increases our heartbeat, breathing rate, blood flow into the muscles and causes the liver to put more stored glucose in our blood. All these actions of adrenaline produce a lot of energy in our body very quickly and enable us to take quick action.
(e) Iodine deficiency in our diet causes goitre. The main symptom of goitre is swelling of the thyroid gland which is present in the neck.
CLASS XI NEURAL CONTROL AND COORDINATION ENRICHMENT WORKSHEET-5
1. Name the chemical released at the synaptic junction.
2. List the structure involved in the protection of brain.
3. Rearrange the following in the correct order of involvement in electrical impulse movement. Synaptic knob, dendrites, cell body, Axon terminal, Axon.
4. Which sensory organ is involved in vertigo (sensation of oneself or objects spinning around)?
5. What is the function ascribed to Eustachian tube?
6. Name the parts of human forebrain indicating their respective functions.
7. Explain the structure of middle and internal ear with the help of diagram.
8. Describe vestibular apparatus.
9. Distinguish between
a. Aqueous humor and vitreous humor
b. Blind spot and yellow spot
10. Give a brief account of mechanism of synaptic transmission.
CBSE Class 11 Biology The Living World Worksheet |
CBSE Class 11 Biology Biological Classification Worksheet |
CBSE Class 11 Biology Plant Kingdom Worksheet |
CBSE Class 11 Biology Animal Kingdom Worksheet |
CBSE Class 11 Biology Morphology of Flowering Plants Worksheet |
CBSE Class 11 Biology Anatomy of Flowering Plants Worksheet |
CBSE Class 11 Biology Structural Organisation In Animals Worksheet |
CBSE Class 11 Biology Cell The Unit Of Life Worksheet |
CBSE Class 11 Biology Biomolecule Worksheet |
CBSE Class 11 Biology Cell Cycle And Cell Division Worksheet Set A |
CBSE Class 11 Biology Cell Cycle And Cell Division Worksheet Set B |
CBSE Class 11 Biology Transport In Plants Worksheet |
CBSE Class 11 Biology Morphology Of Plants Worksheet |
CBSE Class 11 Biology Photosynthesis In Higher Plants Worksheet Set A |
CBSE Class 11 Biology Photosynthesis In Higher Plants Worksheet Set B |
CBSE Class 11 Biology Respiration In Plants Worksheet Set A |
CBSE Class 11 Biology Respiration In Plants Worksheet Set B |
CBSE Class 11 Biology Breathing And Exchange Of Gases Worksheet Set A |
CBSE Class 11 Biology Breathing And Exchange Of Gases Worksheet Set B |
CBSE Class 11 Biology Body Fluids And Circulation Worksheet |
CBSE Class 11 Biology Chemical Coordination And Integration Worksheet |
Worksheet for CBSE Biology Class 11 Chapter 21 Neural Control and Coordination
We hope students liked the above worksheet for Chapter 21 Neural Control and Coordination designed as per the latest syllabus for Class 11 Biology released by CBSE. Students of Class 11 should download in Pdf format and practice the questions and solutions given in the above worksheet for Class 11 Biology on a daily basis. All the latest worksheets with answers have been developed for Biology by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their class tests and examinations. Expert teachers of studiestoday have referred to the NCERT book for Class 11 Biology to develop the Biology Class 11 worksheet. After solving the questions given in the worksheet which have been developed as per the latest course books also refer to the NCERT solutions for Class 11 Biology designed by our teachers. We have also provided a lot of MCQ questions for Class 11 Biology in the worksheet so that you can solve questions relating to all topics given in each chapter.
You can download the CBSE Printable worksheets for Class 11 Biology Chapter 21 Neural Control and Coordination for latest session from StudiesToday.com
There is no charge for the Printable worksheets for Class 11 CBSE Biology Chapter 21 Neural Control and Coordination you can download everything free
Yes, studiestoday.com provides all latest NCERT Chapter 21 Neural Control and Coordination Class 11 Biology test sheets with answers based on the latest books for the current academic session
CBSE Class 11 Biology Chapter 21 Neural Control and Coordination worksheets cover all topics as per the latest syllabus for current academic year.
Regular practice with Class 11 Biology worksheets can help you understand all concepts better, you can identify weak areas, and improve your speed and accuracy.