Which of the following is not the lateral branches of the roots?
1. Tertiary roots
2. Secondary roots
3. Primary roots
4. Both 1 and 2
Roots developed from parts of the plant other than radicles are called
1. tap roots
2. fibrous roots
3. adventitious roots
4. nodular roots
The cells of which of the following regions of the root are responsible for growth of its length?
1. Root cap
2. Region of meristematic activity
3. Region of elongation
4. Region of maturation
The region responsible for growth in the length of the root is:
1. A
2. B
3. C
4. D
Consider the following statements:
| I: | The roots hair are unicellular and arise from the region of maturation. |
| II: | Terminal buds of stems may get modified to thorns. |
| III: | Leaves originate from shoot apical meristem and are arranged in an acropetal order. |
Which of the above statements are true?
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
Root hairs develop from the region of
1. maturation
2. elongation
3. root cap
4. meristematic activity
The region of part of root that increases the surface area for water absorption is
1. Root cap
2. Zone of elongation
3. Meristematic zone
4. Root hair
Which of the following zone of the root has thin cell wall, dense cytoplasm and large nucleus?
1. Region of maturation
2. Region of elongation
3. Region of root hair
4. Region of meristematic cells
The cells proximal to the merismatic zone in root tip represents
1. Zone of cell elongation
2. Zone of deacceleration
3. Zone of differentiation
4. Zone of maturation
Rearrange the following zones as seen in the root in the vertical section and choose the correct option:
| I: | Root hair zone |
| II: | Zone of meristems |
| III: | Root cap zone |
| IV: | Zone of maturation |
| V: | Zone of elongation |
Codes:
1. III, II, V, I, IV
2. I, II, III, IV, V
3. IV, V, I, III, II
4. V, IV, III, II, I