Home › UP Board Class 10 › Science › How do Organisms Reproduce › Which of the following best explains why most ST…
Which of the following best explains why most STDs are spread by sexual contact?
Answer & Solution
Correct answer: D.
1. STD pathogens are typically present in genital and mucosal fluids.
2. Direct mucosal contact during intercourse efficiently transfers them.
3. They generally survive poorly outside the host, so other routes are minor.
_Source: NCERT Class 10 Science, Ch 7 "How do Organisms Reproduce", §7.3.4_
Related questions
A flower that has both stamens and pistils is called:Why is the male reproductive system positioned outside the abdominal cavity in a scrotum?In sexual reproduction, the gamete-forming cell division is:Population control through contraception is important because uncontrolled population growWhich of the following is NOT a method of contraception?Fission divides the parent cell into two equal halves, whereas multiple fission divides itAfter delivery, the umbilical cord between mother and baby is cut. Before this, the cord cThe placenta in humans is best described as: