Q3 of 386 Page 161

What will happen if

(a) Apical meristem is damaged or cut?


(b) Cork is not formed in older stems and roots.


(c) Lymph is not returned to blood?

(a) Apical meristems are the growing parts of the roots and stems and are present at the tips of roots, branches, leaves and shoots. If the apical meristems are damanged or cut, the growth of that part of the plant will stop.

(b) If cork is not formed in older stems or roots, the outer tissues will rupture due to increase in girth which expose the interior to dessication and infection.


(c) Lymph is transported through lymph vessels of the lymphatic system. If lymph is not returned to blood, the blood volume will decrease during passage of materials from tissues to blood and vice versa


More from this chapter

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1

What will happen if (a) Bone is dpiied in hydrochloric acid (HCI); (b) Bone is dried?

 2

What will happen if

(a) Ligament gets over stretched?


(b) Heparin is absent in blood.


(c) Striated muscles contract rapidly for longer duration.

 4




(a) Identify Figure A, B and C


(b) Which one of them has heavy deposition of lignin?


(c) Which one of them provides both mechanical strength as well as flexibility?


(d) Which one of them can be modified to form air cavities in awuatic plants?


(e) Which one of them is commercially exploited to obtain Hemp and Jute?

 5

(a) Identify the figure. What is its function

(b) Label V and W


(c) Label X, Y and Z


(d) W loses its nucleus in the mature state, still it remains alive. Explain how