Give location of the following. [5 Marks]
Nectaries
Placenta
Ciliated columnar epithelium
Meristematic tissues
Centrosomes
Answers
Explanation:
a) Depending on the species, a flower's nectaries can be located on its petals, anthers, stamens, sepals, pistils, styles, ovaries or other parts of the flower
b) Typical placenta location
The placenta can attach virtually anywhere in the uterus to nourish your baby. Usually the placenta positions itself at either the top or side of the uterus. But it's always possible that the placenta will attach to the front of the stomach, a position known as an anterior placenta.
c) Ciliated columnar epithelium is therefore found in the respiratory tract where mucous and air are pushed away to clear the respiratory tract. Other areas where ciliated columnar epithelium is found are the fallopian tubes, the uterus, and the central canal of the spinal cord.
d) Meristematic tissues are found in many locations, including near the tips of roots and stems (apical meristems), in the buds and nodes of stems, in the cambium between the xylem and phloem in dicotyledonous trees and shrubs, under the epidermis of dicotyledonous trees and shrubs (cork cambium), and in the pericycle of roots, producing branch roots. The two types of meristems are primary meristems and secondary meristems.
e) Found only in animal cells, these paired organelles are typically located together near the nucleus in the centrosome, a granular mass that serves as an organizing center for microtubules. Within the centrosome, the centrioles are positioned so that they are at right angles to each other.