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Answer the following : (a) Which hormone is responsible for the chang...

Answer the following : (a) Which hormon | Class 10 Science Chapter Control and Coordination, Control and Coordination NCERT Solutions

Welcome to the NCERT Solutions for Class 10 Science - Chapter Control and Coordination. This page offers a step-by-step solution to the specific question from Exercise 0, Question 43: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 43:

Answer the following :
(a) Which hormone is responsible for the changes noticed in females at puberty?
(b) Dwarfism results due to deficiency of which hormone?
(c) Blood sugar level rises due to deficiency of which hormone?
(d) Iodine is necessary for the synthesis of which hormone?

Answer:

a) Oestrogen or Estrogen is responsible for the changes noticed in females at the stage of puberty. Women attain puberty at the age of 13. Estrogen is secreted by the ovarian follicle cells in the ovaries. This hormone leads to the growth and maturation of reproductive tract; and development of accessory sex characters.

b) Dwarfism results due to deficiency of Somatotrophic or Growth hormone which is secreted by anterior lobe of pituitary gland. Dwarfism shows the stoppage of growth of long bones of the body.

c) Blood sugar level rises due to deficiency of Insulin hormone. Insulin is secreted by the beta cells of islets of Langerhans by the rise in blood- sugar level. Deficiency of insulin causes diabetes mellitus.

d) Iodine is necessary for the synthesis of Thyroxine hormone. Due to deficiency of iodine can cause the swelling up of neck and goitre disease and causes the enlargement of thyroid gland.

Other Questions of Chapter Control and Coordination

How do we detect the smell of an agarbatti (incense stick)?

Which of the following is a plant hormone?

(a) Insulin
(b) Thyroxin
(c) Oestrogen
(d) Cytokinin.

What are the major parts of the brain? Mention the functions of different parts.

Which part of the brain maintains posture and equilibrium of the body?

Why is the use of iodised salt advisable?

Give an example of a plant hormone that promotes growth.

Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse?

How does phototropism occur in plants?

How does chemical coordination take place in animals?

What is the role of the brain in reflex action?

Popular questions of class 10 Science

When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.

Outline a project which aims to find the dominant coat colour in dogs.

Draw the structure for the following compounds.

(i) Ethanoic acid (ii) Bromopentane*
(iii) Butanone (iv) Hexanal.

*Are structural isomers possible for bromopentane?

A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistance, which may be used separately, in series, or in parallel. What are the currents in the three cases?

How is the sex of the child determined in human beings?

(a) What property do all elements in the same column of the Periodic Table as boron have in common?
(b) What property do all elements in the same column of the Periodic Table as fluorine have in common?

Calculate the number of electrons constituting one coulomb of charge.

A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?

What is an homologous series? Explain with an example.

Why is variation beneficial to the species but not necessarily for the individual?

Recently Viewed Questions of Class 10 Science

Give any two ways in which non-biodegradable substances would affect the environment.

Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?

On the basis of the issues raised in this chapter, what changes would you incorporate in your lifestyle in a move towards a sustainable use of our resources?

Where do plants get each of the raw materials required for photosynthesis?

How can you as an individual contribute or make a difference to the management of (a) forests and wildlife, (b) water resources and (c) coal and petroleum?

Can you suggest some changes in your school which would make it environment-friendly?

What changes are observed in the uterus subsequent to implantation of young embryo?

If you could use any source of energy for heating your food, which one would you use and why?

A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as

(a) TTWW
(b) TTww
(c) TtWW
(d) TtWw

Where should an object be placed in front of a convex lens to get a real image of the size of the object?

(a) At the principal focus of the lens
(b) At twice the focal length
(c) At infinity
(d) Between the optical centre of the lens and its principal focus.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

Read the question carefully and focus on the core concept being asked.
Reference examples and data from the chapter when answering questions about Control and Coordination.
Review previous year question papers to get an idea of how such questions may be framed in exams.
Practice answering questions within the time limit to improve your speed and accuracy.
Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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