Q: Q: What is the name for the pores in leaves that allow a plant to retain water or exchange gases? Read this paragraph and choose the correct option from the provided answers: To allow the plant to retain water and exchange gases, small pores (holes) in the leaves called stomata also evolved ( Figure below ). The stomata can open and close depending on weather conditions. When it's hot and dry, the stomata close to keep water inside of the plant. When the weather cools down, the stomata can open again to let carbon dioxide in and oxygen out. Choices: - neurons - chloroplasts - rhizomes - stomata A:
A: stomata

Q: Q: We would genetically be all the same if genes did not have different what? Read this paragraph and choose the correct option from the provided answers: Chromosome, gene, locus and alleles are all related. What is the different between a gene and a locus? Between a gene and an allele? Chromosomes are composed of genes located at specific loci. And genes have different alleles. If genes did not have different alleles, we would genetically be all the same. What does that mean?. Choices: - atoms - antigens - bases - alleles A:
A: alleles

Q: Q: What is the only commercial way of reproducing plants such as orchids? Read this paragraph and choose the correct option from the provided answers: Choices: - sexual reproduction - cross-breeding - grafting - cloning A:
A: cloning

Q: Q: Valence electrons also determine how wellif at allthe atoms of an element conduct what? Read this paragraph and choose the correct option from the provided answers: Valence electrons also determine how wellif at allthe atoms of an element conduct electricity. The copper wires in the cable in the Figure below are coated with plastic. Copper is an excellent conductor of electricity, so it is used for wires that carry electric current. Plastic contains mainly carbon, which cannot conduct electricity, so it is used as insulation on the wires. Choices: - water - pollution - light - electricity A:
A: electricity