Fungi can form a symbiotic relationship with algae to form lichen. Fungi can also form a symbiotic relationship with plant roots, helping the roots get more oxygen . What part of a mushroom forms this relationship with plant roots ? Pls help

what's the

answer: 45

explanationyou have to add as well to be it could be

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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