Starting a New Life

1. According to Bangladeshi law, what is the legal marriage age for boys?

• A) 18 years
• B) 20 years
• C) 21 years
• D) 25 years

2. According to the modern definition by Curtis-Barnes, what is biological evolution?

• A) The slow emergence of complex species from simpler ones.
• B) The process of an individual organism growing and changing.
• C) The change in the allele frequency of a species from one generation to the next.
• D) The idea that all organisms were created in their present form.

3. What is the defining characteristic of homologous organs, such as a human hand and a bat's wing?

• A) They have different internal structures but perform the same function.
• B) They have identical external appearances and functions.
• C) They are different in appearance but have a similar internal bone structure.
• D) They are only found in animals that live in the same environment.

4. How many pairs of chromosomes are typically found in a human cell?

• A) 22 pairs
• B) 46 pairs
• C) 23 pairs
• D) 48 pairs

5. Which of the following gases was notably absent from Earth's early atmosphere during the period of chemical evolution?

• A) Methane
• B) Ammonia
• C) Oxygen
• D) Carbon dioxide

6. What combination of sex chromosomes results in the birth of a boy?

• A) XX
• B) XY
• C) YY
• D) XO

7. What is a primary health risk for a baby born from an early pregnancy, as described in the text?

• A) The baby is often born with a higher weight.
• B) The baby has a stronger immune system.
• C) The baby is born with a low weight due to insufficient room for growth.
• D) The baby develops faster mentally.