Answer:
Polyploidy
Explanation:
Polyploidy can be defined as a rapid method of speciation that has been important in the history of flowering plants.
In plants, it involves the possession of two complete sets of chromosomes and it leads to the origin of new species.
Hence, the two sets of chromosomes comprises of triploidy (69 chromosomes) and tetraploidy (92 chromosomes).
a. it limits water loss through transpiration
The stomata are small openings in epidermis (found on the leaf) that allow carbon dioxide, water, and oxygen to enter and exit the leaf. Transpiration is water movement, including evaporation, in a plant. So just think about it. If it's a hot, sunny day, wouldn't it make sense for the plant to keep its stomata closed so that it doesn't lose water through evaporation? The cacti would close it during the day and leave it open at night since the sun isn't out, and therefore wouldn't lose as much water. Hope this helped :)
cologenese- h<span>ydrolyzes the polysaccharide that holds certain cells together which leads to tissue blackening</span>
The answer to this question is 2
Answer:
Phloem is responsible for carrying the products of photosynthesis from the leaves to the non-photosynthetic parts of the plant. As leaves die off, and photosynthesis is slowly reduced and then halted, phloem will no longer need to carry the sugars from the leaves into storage. Once the leaves die off the tree. As the tree prepares for winter it also produces ice nucleators and antifreezes that help keep the tree's sap from freezing in the winter.
Explanation: