The diagram shows the life cycle of a fern. Which labels belong in the areas marked 1 and 3?
O 1 - Zygote
3 - Spores
0 1 - Spores
3 - Zygote
0 1 - Sporophyte
3 - Gametophyte
O 1 - Gametophyte
3 - Sporophyte
1
4
2
3

answer; the male's sperm cells have mitochondria, but because the sperm contributes dna but no cytoplasm, no mitochondria are passed to the egg at ferilization;

i don't have a definite answer, but i would assume not based on my experiences with my friend when we both were taking a spanish course; however, it would probably still be to your benefit to look at what questions she received, just in case. a language course and a science course differ greatly, after all.

the calvin cycle takes place in the stroma of the chloroplast. carbon dioxide enters the stroma of the chloroplast to combine with the five-carbon compound called ribulose1, 5-biphosphate to form two molecules of a three-carbon compound called 3-phosphoglyceric acid. this reaction is catalyzed by an enzyme called ribulose bi-phosphate carboxylase.