Which statement best describes scientists who contributed to the current
body of scientific knowledge?
o
a. they were wealthy men during the 20th century.
o
b. they were mainly ancient philosophers whose theories stood the
test of time.
c
.
they were mainly from european countries such as england and
france.
o
d. they were made up of men and women throughout history from
different countries.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602