Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
Puberty
Puberty is the period of adolescence during which the rate of general body growth begins to slow down, and reproductive tissues begin to mature, leading to the attainment of sexual maturity and the capability to reproduce.
Changes Common to Both Boys and Girls in Early Teenage Years
During early adolescence, several physical changes occur in both boys and girls. Any two of the following can be mentioned:
- New Hair Growth: Thick hair begins to grow in new parts of the body, such as the armpits and the genital area between the thighs, which can also become darker in colour. Thinner hair can also appear on the legs, arms, and face.
- Skin Changes: The skin frequently becomes oily, and teenagers may begin to develop pimples.
- Psychological Changes: Individuals become conscious and aware of their own bodies and those of others in new ways.
Marking Scheme
- 1Definition of Puberty (mentioning maturation of reproductive tissues/attainment of sexual maturity) (1 mark)
- 2Any two common changes (0.5 marks for each correct change) (1 mark)
Hint
Think about the physical changes that happen to almost every teenager, regardless of gender, such as changes in skin texture and new patterns of hair growth.
Quick Oral Answer
Puberty is the stage of life when an individual becomes sexually mature. Two changes common to both boys and girls are the growth of thick hair in the armpits and genital region, and the skin becoming oily, which often causes pimples.
Analysis & Explanation
During the early teenage years, the human body undergoes a transition phase called puberty. This phase is marked by hormonal changes that prepare the body for sexual reproduction. While some changes are gender-specific (such as voice cracking and facial hair in boys, or breast development and menstruation in girls), several changes are common to both sexes. These include the growth of pubic and axillary (armpit) hair, increased activity of sweat and sebaceous (oil) glands leading to oily skin and acne, and psychological adjustments regarding body image.
Common Mistakes
- 1Confusing gender-specific changes (like breast development in girls or cracking of voice in boys) with common changes.
- 2Defining puberty simply as 'growing older' or 'physical growth' without highlighting sexual maturation.
Interesting Facts
Puberty is initiated by hormone signals from the brain (specifically the hypothalamus and pituitary gland) to the gonads (ovaries in girls, testes in boys), which then produce the sex hormones responsible for these physical transformations.
Spotted a mistake or something unclear?
Tell us — we fix reported answers fast.
Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2022?
This question carries 2 marks in the CBSE Class 10 Science 2022 examination.
Which chapter does this question come from in Science?
This question is from the chapter "How do Organisms Reproduce?" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Sexual Reproduction in Human Beings" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2022 paper?
This is a Short Answer question from Section Section A in the CBSE Class 10 Science 2022 paper.