Assertion: The zygote developed from sexual reproduction is diploid and forms embryo.
Reason: In sexual reproduction, haploid gametes fuse and form zygote.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4)- Both A and R are true, and R is the correct explanation of the A .
Assertion (A): The zygote developed from sexual reproduction is diploid and forms the embryo. This statement is true. In sexual reproduction, when a sperm (haploid) fertilizes an egg (haploid), they combine to form a diploid zygote, which then develops into an embryo.
Reason (R): The statement "In sexual reproduction, haploid gametes fuse and form a zygote" is also true. Haploid gametes (sperm and egg) each carry one set of chromosomes. When they fuse during fertilization, they form a diploid zygote with two sets of chromosomes. Therefore, Reason (R) is the correct explanation for Assertion (A).