AP BIOLOGY

Detailed explanation-1: -Haploid male gametes, pollen, are formed within the anthers of the androecium. Haploid female gametes, eggs, are formed within the ovary of the gynoecium.

Detailed explanation-2: -The gametophyte has male or female reproductive organs that undergo mitosis to form haploid gametes (sperm or eggs). Fertilization of gametes produces a diploid zygote.

Detailed explanation-3: -Explanation: Since ovary & anther undergoes only mitotic divisions during their development in which chromosome number remains the same, so these structures are diploid. The zygote is formed by the fusion of both male and female gametes (haploid structures) .

Detailed explanation-4: -Male gametes are produced in the anther. It is a haploid (n) gamete.

Detailed explanation-5: -Summary. Plants derived from anther culture are theoretically haploid, but diploid plants are also known to arise. Anther culture-derived diploid plants are usually homozygous and are believed to be due to spontaneous doubling of chromosomes in either microsporocytes or callus cells during the culture process.