Class 10 Science Chapter 7 MCQ Online Test for 2021-2022
|Chapter: 7||Control and Coordination|
|Contents:||MCQ Online Tests with Answers|
Class 10 Science Chapter 7 MCQ Test for Revision
Class 10 Science Chapter 7 MCQ Online Test with answers and explanation. All the questions are important for the exams whether it is class test or terminal exams. All the questions are prepared from NCERT Textbook for class 10 Science only. Answers and Explanation of the questions are also confined to NCERT Books only.
In humans, the life processes are controlled and regulated by
[A]. Reproductive and endocrine systems
[B]. Respiratory and nervous systems
[C]. Endocrine and digestive systems
[D]. Nervous and endocrine systems
Vikas is doing his homework which is given by his teacher. Would you help him to choose the correct sentences?
[A]. The hormones produced by endocrine glands act as messenger between the nervous system and the organs of our body.
[B]. The endocrine system also helps in coordinating the activities of our body.
[C]. A group of endocrine glands which produce various hormones is called an endocrine system.
[D]. All the above.
The hormone which increases the fertility in males is called
[D]. Growth hormone
A doctor advised a person to take an injection of insulin because
[A]. His blood pressure was low
[B]. His heart was beating slowly
[C]. He was suffering from goiter
[D]. His sugar level in blood was high
Read the following sentences carefully, and choose the incorrect one:
[A]. The complete coordination in the human body is achieved by the nervous system and endocrine system working together.
[B]. The main centres in the body for the coordination of the two system of control of the hypothalamus and pituitary gland.
[C]. Hypothalamus produces releasing hormones and inhibitory hormones.
[D]. Pituitary gland is present just above the kidney and controls the growth and development in the body.
Which statement is not true about thyroxin?
[A]. Iron is essential for the synthesis of thyroxin
[B]. It regulates carbohydrates, protein and fat metabolism in the body
[C]. Thyroid gland requires iodine to synthesis thyroxin
[D]. Thyroxin is also called thyroid hormone
When a person is suffering from severe cold, he or she cannot
[A]. Differentiate the taste of an apple from that of an ice cream
[B]. Differentiate the smell of a perfume from that of an agarbatti
[C]. Differentiate red light from green light
[D]. Differentiate a hot object from a cold object
Consider the following statements and choose the correct one:
[A]. Medulla controls various involuntary actions such as heartbeat, breathing, blood pressure and peristaltic movement of alimentary canal.
[B]. The cerebellum helps in maintaining posture and balance of the body such as walking, dancing, cycling, writing etc.
[C]. The mid brain controls reflex movement of the head, neck and trunk in response to visual and auditory stimuli.
[D]. All the above
Involuntary actions in the body are controlled by
[A]. Medulla in forebrain
[B]. Medulla in midbrain
[C]. Medulla in hindbrain
[D]. Medulla in spinal cord
Harleen is completed her science chapter where she wrote some statements on the types of neurons. She wants to know whether the statements are correct or not? Harleen wants to take help from you:
[A]. Sensory neurons transmit impulses from the sensory cells or receptors towards the central nervous system as spinal cord and brain.
[B]. Motor neurons transmit impulses from the central nervous system towards the muscle cells or effectors.
[C]. Relay neurons occur in the central nervous system where they serve as links between other neurons.
[D]. All the above.
The movement of sunflower in accordance with the path of sun is due to
The growth of tendril in pea plants is due to
[A]. Effect of light
[B]. Effect of gravity
[C]. Rapid cell divisions in tendrillar cells that are away from the support
[D]. Rapid cell divisions in tendrillar cells in contact with the support
Which of the following statement is or are correct?
[A]. Reflex actions which involve brain are called cerebral reflexes.
[B]. The contraction of Pupil of our eye automatically in the presence of bright light is an example of cerebral reflex.
[C]. Autonomic nervous system means self-governing nervous system.
[D]. All the above
The shape of guard cells changes due to change in the
[A]. Protein composition of cells
[B]. Temperature of cells
[C]. Amount of water in cells
[D]. Position of nucleus in the cells
Badal appeared in class test but he confused to know the correct statement. Would you help him to know that?
[A]. The autonomic nervous system controls and regulate the function of the internal organs of our body involuntarily.
[B]. The voluntary nervous system helps us take voluntary actions which are under the conscious control of the brain.
[C]. When we are going to school, the brain analysis information and decide that since there is a risk of being late of school, so we should walk faster.
[D]. All the above
Select the mis-matched pair
[A]. Adrenaline: Pituitary gland
[B]. Testosterone: Testes
[C]. Estrogen: Ovary
[D]. Thyroxin: Thyroid gland
The main function of abscisic acid in plants is to
[A]. Increase the length of cells
[B]. Promote cell division
[C]. Inhibit growth
[D]. Promote growth of stem
Posture and balance of the body is controlled by
Which of the following statements are true?
[A]. Sudden action in response to something in the environment is called reflex action, and Sensory neurons carry signals from spinal cord to muscles.
[B]. Sudden action in response to something in the environment is called reflex action, and Motor neurons carry signals from receptors to spinal cord.
[C]. Sudden action in response to something in the environment is called reflex action, and The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc.
[D]. Sudden action in response to something in the environment is called reflex action, and Sensory neurons carry signals from spinal cord to muscles, and Motor neurons carry signals from receptors to spinal cord.
Which is the correct sequence of the components of a reflex arc:
[A]. Receptors → Muscles → Sensory neuron → Motor neuron → Spinal cord
[B]. Receptors → Motor neuron → Spinal cord → Sensory neuron → Muscle
[C]. Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle
[D]. Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle
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What is function of Medulla in Hindi-Brain in 10th Science Chapter 7?
Medulla controls all involuntary actions including blood pressure, salivation and vomiting.
How do dendrils cling the support as per Class 10 Science chpater 7?
Tendrils are sensitive to touch. When they come in contact with any support, the part of the tendril in contact with the object does not grow as rapidly as the part of the tendril away from the object. This causes the tendril to circle around the object and thus cling to it.
Why do plants appear to bend towards light according to 10th Science Chapter 7?
When growing plants detect light, a hormone called auxin, synthesised at the shoot tip, helps the cells to grow longer. When light is coming from one side of the plant, auxin diffuses towards the shady side of the shoot. This concentration of auxin stimulates the cells to grow longer on the side of the shoot which is away from light. Thus, the plant appears to bend towards light.
Name the hormone of plant which inhibits the growth as per 10th Science NCERT?
Abscisic acid is one example of a hormone which inhibits growth of plants.
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