Answer 1.1 upstairs is wrong choose B,azaleas need light to germinate.

Tobacco (98.5% germination in the presence of light? No light germination rate of 2.4%)

Amaranth in the dark to germinate is (light germination rate of 1.8%? 96.6% germination without seeing light)?

Question 2 is the hypocotyl, right

Because there are two types of plant germination: emergence and retention, and emergence is the extension of the hypocotyl to push the cotyledons out of the soil. The cotyledons of the bean sprouts we usually eat are on top, so we eat the hypocotyl below the cotyledons.

And if it's a root, there are small lateral roots growing on the top side, and a good mung bean sprout is one that has more lateral roots, so it's a hypocotyl.

Third question: it's cotyledons. Look at that picture that was cut off in a PowerPoint

The endosperm is the structure that stores nutrients in the seed, but most dicotyledonous plants have endosperm gradually absorbed by the embryo and nutrients stored in the cotyledons during the formation of the seed, resulting in endosperm-less seeds, such as soybeans, peanuts, and so on.