<span>The oldest known vascular plants in the northern hemisphere are Devonian
This is true</span>
Answer:
Embryo with single cotyledon
Explanation:
Monocot, also known as monocotyledonous plants are a group of flowering plants (angiosperms) that possess one seed-leaf or cotyledon, which is contrary to the two-seed leaves possessed by dicots. Monocot plants have other characteristics that differentiate them from dicots as follows:
- Their flower parts are in multiples of three.
- It's major leaf veins are reticulated
- Pollen with single furrow or pore
However, the embryo of monocots are with a single cotyledon.
The results of inbreeding over generations essentially creates deformities and handicaps caused by DNA that is too close. When the DNA is too similar in patterns, the chromosomes and such get ruined. That is why we see most inbreeding cases lead to debilitative diseases or handicaps.