Class 10 Science Chapter 7 MCQ (Multiple Choice Questions) of Control and Coordination. MCQs are prepared including intext questions and exercises questions. These MCQ Online Tests covers the entire chapter 7 of grade 10 science. Terms related to organs and hormones responsible for the control and coordination are given here in the format of MCQ Quiz. Practice these objective questions to clear the concepts of chapter 7 of standard X Science.

Class 10 Science Chapter 7 MCQ Online Test for 2022-2023

Class: 10Science
Chapter: 7Control 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.

Q1

Priya is writing some statements, choose the correct statement and help him:

[A]. The hormones are poured directly into the blood and carried throughout the body by blood circulatory system.
[B]. The hormones have their effect at the sites different from the sites where they are made so they are called chemical messengers.
[C]. The hormones act on specific tissue or organ is called the target organs.
[D]. All the above
Q2

Junction between two neurons is called

[A]. Cell junction
[B]. Neuro muscular junction
[C]. Neural joint
[D]. Synapse
Q3

Which of the following endocrine glands is unpaired?

[A]. Adrenal
[B]. Testes
[C]. Pituitary
[D]. Ovary
Q4

The hormone which increases the fertility in males is called

[A]. Oestrogen
[B]. Testosterone
[C]. Insulin
[D]. Growth hormone
Q5

Badal appeared in class test but he confused to know the incorrect statement. Would you help him to know that?

[A]. The adrenaline hormone prepares our body to function at maximum efficiency during any emergency.
[B]. This adrenaline hormone increases our heart beats, breathing rate, blood flow into muscles.
[C]. A lot of adrenaline hormone is also secreted by adrenal glands, when we are angry or excited.
[D]. We have only one adrenal glands in our body.
Q6

Dwarfism results due to:

[A]. Excess secretion of thyroxin
[B]. Less secretion of growth hormone
[C]. Less secretion of adrenaline
[D]. Excess secretion of growth hormone
Q7

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
Q8

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
Q9

Which of the following statements about the transmission of nerve impulse is incorrect?

[A]. Nerve impulse travels from dendritic end towards axonal end.
[B]. At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron.
[C]. The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuron.
[D]. A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells.
Q10

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.
Q11

The substance that triggers the fall of mature leaves and fruits from plants is due to

[A]. Auxin
[B]. Gibberellin
[C]. Abscisic acid
[D]. Cytokinin
Q12

The movement of sunflower in accordance with the path of sun is due to

[A]. Phototropism
[B]. Geotropism
[C]. Chemotropism
[D]. Hydrotropism
Q13

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. The nerves which carry messages from the body parts to the brain or spinal cord are called sensory nerves.
[B]. There is also a third type of nerves called cranial nerves.
[C]. The brain and the spinal cord are connected to the all the senses organ and other parts of our body by millions of nerves.
[D]. The nerves which carry messages from the brain or spinal cord to the body parts for action are called motor nerves.
Q14

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
Q15

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
Q16

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. Thyroid glands gland makes a hormone called thyroxine which contains Iodine.
[B]. The main symptom of goitre is that the rib cage of a person appears to swollen due to enlargement of thyroid gland.
[C]. The deficiency of iodine in the diet of a person produces less thyroxine hormone.
[D]. There are four small parathyroid glands which are embedded in the thyroid gland.
Q17

Which of the following is not associated with growth of plant?

[A]. Auxin
[B]. Gibberellins
[C]. Cytokinin
[D]. Abscisic acid
Q18

The movement of shoot towards light is

[A]. Geotropism
[B]. Hydrotropism
[C]. Chemotropism
[D]. Phototropism
Q19

Which of the following statements are true about the brain?

[A]. The main thinking part of brain is hind brain, and Centres of hearing, smell, memory, sight, etc. are located in forebrain.
[B]. The main thinking part of brain is hind brain, and Centres of hearing, smell, memory, sight, etc. are located in forebrain, and Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hindbrain.
[C]. Centres of hearing, smell, memory, sight, etc. are located in forebrain, and Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hindbrain.
[D]. Involuntary actions like salivation, vomiting, blood pressure is controlled by the medulla in the hindbrain, and Cerebellum does not control posture and balance of the body.
Q20

Electrical impulse travels in a neuron from

[A]. Dendrite → Axon → Axonal end → Cell body
[B]. Cell body → Dendrite → Axon → Axonal end
[C]. Dendrite → Cell body → Axon → Axonal end
[D]. Axonal end → Axon → Cell body → Dendrite

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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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