Biennial plants may be kept alive (prevent their flowering) for several years by exposing them to - continuous warm temperatures - continuous cold temperatures - continuous short nights - continuous long nights

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

This is due ! matching pairs of chromosomes from parents are called a. homologous chromosomes b. heterozygous chromosomes c. herterogenes d. homologous bands

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?