Answer 16-20 please, please do not comment nonsense if not you will be reported. The first accurate and correct answer gets brainliest

16. is b which is gymosperms

17. is d which is pistill

18. is b which is pollination

19. (I'm not sure of the answer of this question.)

20. is d which is cotyleon

Explanation:

16 is b because gymnosperms are a group of seed-producing plants that include conifers,

cycads, ginkgo and gnetophytes.

17 is d because the part of the stamen where pollen is produced is Anther. Pistill is the ovule producing part of a flower.

18 is b because pollination is the transfer of pollen to sigma.

19 (unknown answer)

20 is d because the food-storing structure in the seed is cotyleon.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

thats not a question