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Question
What are sexually transmitted diseases?
Solution
Diseases that are transmitted from one person to other through sexual contact are known as sexually transmitted diseases (STDs).
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RELATED QUESTIONS
Why is it an advantage for the testes to be situated in the scrotal sac outside the main body cavity? Can you think of one disadvantage?
What is ovulation? How often does it happen in human females?
Given below is a diagram of two systems together in the human body.
 |
- Name the systems.
- Name the parts numbered 1-10.
- Describe the functions of the parts 3, 4, 5 & 6.
- What will happen if the part 3 on both sides gets blocked?
In humans, the fertilization takes place in:
What is reproduction? List its two types.
Define the following:
Parthenogenesis
Give Reasons
At the time of birth, the testes descend into the scrotal sacs.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| (i) Acrosome
(ii) Ovulation (iii) Sperm (iv) Menopause (v) Implantation (vi) Fertilization (vii) Contraception in males |
(a) Male gamete
(b) Oviduct (c) Uterus (d) Spermatozoa (e) Progesterone (f) Stoppage of the menstrual cycle (g) Sudden change in genes |
Choose the Odd One Out:
Given below is a group of terms. In the group, one pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.
Female gonad : Ovaries :: Male gonad : ______.
