Grade 9 - sexual reproduction

Grade 9 - sexual reproduction

Multiple Choice

Human body has

• 46 chromosomes

• 23 chromosomes

Multiple Choice

Human body chromosomes

• diploid

• haploid

Multiple Choice

Human gametes (sex cell)

• contain 23 chromosomes

• contain 46 chromosomes

Multiple Choice

Zygote is fusion from female and male gametes, so zygote contain

• 46 chromosomes, diploid

• 46 chromosomes ,haploid

Multiple Choice

Gametes only have half of parent chromosomes, so to produce gametes ......... occur

• mitosis

• meiosis

Multiple Choice

why do we need meiosis ?

• to maintain total amount of chromosomes in organisms

• to repair cell

Multiple Choice

Gametogenesis is the process to make

• gamet

• body cell

Multiple Choice

what is the result of oogenesis ?

• 1 egg cell

• 4 egg cell

Multiple Choice

what is / are the result of spermatogenesis ?

• 4 sperms

• 1 sperms

Multiple Choice

These statements below are the functions of mitosis, except

• cell repair

• cell growth

• produce sex cell

Multiple Choice

meiosis produce

• haploid chromosomes

• diploid chromosomes