Question

Give one significant difference between each of the following :

(i) Aggregate fruit and Multiple fruits. 

(ii) Amphicribal vascular bundle and Amphivasal vascular handle 

(iii) Open vascular system and Closed vascular system. 

(iv) Uricotelism and Ammonotelism. 

(v) Auxetic growth and Accretionary growth.

Answer 1

(i) Aggregate fruit	Multiple fruits
It is a group of fruit lets which develop from the free ovaries of a single flower.	It is a group of fruit lets which is formed from a whole inflorescence including peduncle.
(ii) Amphicribal vascular bundle	Amphivasal vascular handle
It consists of a central core of xylem, surrounded completely by phloem on all sides.	It consists of a central core of phloem, surrounded completely by xylem on all sides.
(iii) Open vascular system	Closed vascular system
It contains a strip of cambium in between xylem and phloem.	It lacks cambium between xylem and phloem.
(iv) Uricotelism	Ammonotelism
It is the elimination of uric acid as the main nitrogenous waste material.	It is the elimination of nitrogen waste mainly as ammonia.
(v) Auxetic growth	Accretionary growth
In this the body grows in dimension merely by the enlargement of its cells without any increase in the number of cells.	There is production of new cells to replace the wornout differentiated cells, by mitotic division of special undifferentiated reserve cells, present along with differentiated cells.