Control and Coordination Quiz – CBSE Class 10 Science

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Which of the following statements is correct about receptors?

Olfactory receptors detect taste and gustatory receptors smellAuditory receptors detect smell and olfactory receptors detect tasteBoth gustatory and olfactory receptors detect smellGustatory receptors detect taste while olfactory receptors detect smell

Electrical impulse travels in a neuron from

Axonal end → axon → cell body → dendriteDendrite → cell body → axon → axonal endCell body → dendrite → axon → axonal endDendrite → axon → axonal end → cell body

In a synapse, chemical signal is transmitted from

axonal end of one neuron to dendritic end of another neuroncell body to axonal end of the same neuronaxon to cell body of the same neurondendritic end of one neuron to axonal end of another neuron

In a neuron, conversion of electrical signal to a chemical signal occurs at/in

axondendritic endaxonal endcell body

Which is the correct sequence of the components of a reflex arc?

Receptors → Sensory neuron → Spinal cord → Motor neuron → MuscleReceptors → Spinal cord → Sensory neuron → Motor neuron → MuscleReceptors→ Motor neuron → Spinal cord → Sensory neuron → MuscleReceptors → Muscles → Sensory neuron → Motor neuron → Spinal cord

Which of the following statements are true?
(i) Sudden action in response to something in the environment is called reflex action
(ii) Sensory neurons carry signals from spinal cord to muscles
(iii) Motor neurons carry signals from receptors to spinal cord
(iv) The path through which signals are transmitted from a receptor to a muscle, or a gland is called reflex arc

(i) , (ii) and (iii)(i) and (iv)(i) and (iii)(i) and (ii)

Which of the following statements are true about the brain?
(i) The main thinking part of brain is hind brain
(ii) Centres of hearing, smell, memory, sight etc are located in fore brain.
(iii) Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hind brain
(iv) Cerebellum does not control posture and balance of the body

(iii) and (iv)(ii) and (iii)(i), (ii) and (iii)(i) and (ii)

Posture and balance of the body is controlled by

ponsmedullacerebellumcerebrum

Spinal cord originates from

cerebellumponsmedullacerebrum

The movement of shoot towards light is

phototropismchemotropismhydrotropismgeotropism

The main function of abscisic acid in plants is to

promote growth of steminhibit growthpromote cell divisionincrease the length of cells

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

Abscisic acidCytokininsGibberellinsAuxin

Iodine is necessary for the synthesis of which hormone?

InsulinAuxinThyroxinAdrenaline

Choose the incorrect statement about insulin

Insufficient secretion of insulin will cause diabetesIt regulates blood sugar levelIt regulates growth and development of the bodyIt is produced from pancreas

Select the mis-matched pair

Thyroxin: Thyroid glandEstrogen: OvaryTestosterone: TestesAdrenaline: Pituitary gland

The shape of guard cells changes due to change in the

position of nucleus in the cellsamount of water in cellstemperature of cellsprotein composition of cells

The growth of tendril in pea plants is due to

rapid cell divisions in tendrillar cells in contact with the supportrapid cell divisions in tendrillar cells that are away from the supporteffect of gravityeffect of light

The growth of pollen tubes towards ovules is due to

phototropismgeotropismchemotropismhydrotropism

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

hydrotropismchemotropismgeotropismphototropism

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

cytokininabscisic acidgibberellinauxin

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

A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cellsThe chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuronAt the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuronNerve impulse travels from dendritic end towards axonal end

Involuntary actions in the body are controlled by

medulla in spinal cordmedulla in hind brainmedulla in mid brainmedulla in fore brain

Which of the following is not an involuntary action?

ChewingHeart beatSalivationVomiting

When a person is suffering from severe cold, he or she cannot

differentiate a hot object from a cold objectdifferentiate red light from green lightdifferentiate the smell of a perfume from that of an agarbattidifferentiate the taste of an apple from that of an ice cream

What is the correct direction of flow of electrical impulses?

Which statement is not true about thyroxin?

Thyroxin is also called thyroid hormoneThyroid gland requires iodine to synthesise thyroxinIt regulates carbohydrates, protein and fat metabolism in the bodyIron is essential for the synthesis of thyroxin

Dwarfism results due to

Excess secretion of growth hormoneLess secretion of adrenalineLess secretion of growth hormoneExcess secretion of thyroxin

Additional Information about Quiz on Chapter – Control and Coordination | CBSE Class 10 Science:

This quiz is based on Exemplar Problems and other important questions from the "Control and Coordination" chapter of the Science subject for CBSE NCERT Class 10 (X). It covers key concepts such as the nervous system, endocrine system, reflex actions, hormones in animals, and plant movements. These questions are designed to help students strengthen their understanding and improve problem-solving skills. For more such resources, visit the official NCERT website.

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