Photosynthesis requires the green pigment chlorophyll. explain how a japanese maple tree, having only red leaves, can carry on photosynthesis.

Chicken pox and hepatitis are bacterial diseases. true or false?

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.

Which of the following organisms are capable of self-fertilization? a.plants b.tigers c.humans