Question

Name the hormone which would be released during the following situations: (i) A frightened person (ii) Growth of a child to adult (iii) Development of caterpillar to moth (iv) Development of tadpole to frog

June 11, 2024

Answer

(i) Adrenaline

(ii) Growth hormone

(iii) Insect hormones

(iv) Thyroxine

💡 Some Related Questions

Why many of the boys have a hoarse voice?

Lila always eats only dal and rice in every meal. She often falls ill and has become prone to diseases. Can you suggest changes in her diet which can make her healthy and free from disease?

Our government has legalised the age for marriage in boys and girls. Give reasons as to why one should get married after a certain age.

Observe the given chart and graph carefully and answer the questions that follow. (i) Which of the line represents the height of boys? (ii) Which line represents the height of girls? (iii) What is the difference between the pattern of increase in the height of boys and girls? (iv) Is this pattern true for each individual?

Age in years % of full height

Boys Girls

8 72% 77%

9 75% 81%

10 78% 84%

11 81% 88%

12 84% 91%

13 88% 95%

14 92% 98%

15 95% 99%

16 98% 99.5%

17 99% 100%

18 100% 100%

John and Radha were classmates since childhood. When Radha became eleven years old, she developed a little swelling on her neck. She visited the doctor who started medication for her. After a few years, John also developed a slight protrusion on his throat. He got worried and went to the doctor. But, the doctor assured him that it was a normal feature in boys while they are growing up. Can you think of any reasons for the difference in diagnosis?

In human females, each time during maturation and release of egg the inner wall of uterus thickens. Is this thickening permanent? Give reasons.

Given below are certain food items required for proper nourishment of adolescents. Name the nutrients present in the food items and write their functions.

Food items Major nutrient Functions

1. Pulses and nuts

2. Oranges and amla

3. sugar, roti

4. oils

5. Vegetables

During adolescence, the body of boys and girls undergoes certain changes. Given below are a few of those changes. a. Broad shoulders b. Wider chests c. Wider region below waist d. Growth of muscles e. Development of mammary glands f. Growth of facial hair g. Acne and pimples on face h. Development of sex organs i. High-pitched voice j. Growth of pubic hair Categorise these changes into those that occur in boys and those that occur in girls.

Give a suitable word for each of the following statements. [NCERT Exemplar] (i) The site which responds to a hormone (ii) Name of a gland which transports secretions through ducts (iii) Chemicals which control changes at adolescence stage (iv) It marks the beginning of reproductive period

Salma had a very soft and smooth skin during her childhood. As she entered adolescence, she developed pimples on her face. The skin specialist advised her to wash her face at regular intervals. Can you explain the reasons for the appearance of pimples on her face and suggest ways to prevent them?