Answer: c. Flower
Explanation:
An angiosperm can be define as a group of vascular plants. These plants are flower bearing which means they conduct sexual mode of reproduction through flowers. The flower exhibit male and female reproductive structures the fertilization of which produce seeds and fruits.
1. Thicker walls due to a higher amount of carbon dioxide. If you research plants adaption to carbon dioxide levels or even climate change. You should have a few results
A plate that develops at the midpoint between the two groups of chromosomes in a dividing cell and that is involved in forming the wall between the two new daughter cells.
Lipids are not polymers because they contain one molecule and are not macromolecules.
It should be based on the principles of immunology to understand this phenomenon: the immune system produces antibodies against an antigen that it does not possess
The AB group contains the A and B antigens on the red blood cells, so it can not produce anti-A antibodies or anti-B antibodies since it already possesses antigen A and B (otherwise it will develop autoimmunity).