<span>Osteoclasts
</span><span>Are derived from stem cells that produce macrophages
Secrete acids and protein-digesting enzymes</span>
glucose is been oxidised to produce pyruvic acid and oxygen
Answer:
sporopollenin
While the exine is composed of sporopollenin, a complex and highly resistant biopolymer containing fatty acids, phenylpropanoids, phenolics and carotenoids, the intine is largely composed of pectin and cellulose.
Explanation:
Answer:
Gibberellins were extracted from <em>Bacteria</em>