NEET : Multiple Choice questions: Morphology of Root and Stem of Flowering Plant

1.Root is originated from which part of the plant embryo ?

A. Plumule      B. Radicle

C. Cotyledon   D.Epicotyl

Answer: B Explanation 

2. Which of the following root is originated from direct elongation of radicle.

A. Lateral root 

B. Primary root 

C. Secondary root 

D. Tertiary root

Answer: A Explanation 

3. Which one the following statement is incorrect for root system of Dicot plants.

A. Direct elongation of radicle gives rise to Primary root.

B. Primary root bears saveral lateral root in form of secondary , tertiary root.

C. Primary , secondary and tertiary root collectively form Tap root system.

D. Tap root system is present in Wheat.

Answer: D Explanation 

4. Which one the following statement is incorrect for root system of Monocot plants. 

A. Primary root is short lived and replaced by large numbers of roots.

B. These large number of root are originated from the base of stem.

C. Large number of roots from stem base collectively form Fibrous root system.

D. Fibrous root system is found in Mustard.

Answer: D Explanation 

5. Which type of root is originated from other than radicle like from stem.

A. Tap root 

B. Fibrous root 

C. Adventitious root

D. Fusiform root

Answer: C Explanation 

6. Consider the following Plants with adventitious root and select correct code:

1. Grass  

2. Monstera 

3. Banyan

A. 1 and 3       B. 2 and 3 

C. 1 and 2       D. 1 , 2 and 3 

Answer: D Explanation 

7. Consider the following functions of Root and select the correct code:

1. It provide anchorage to Plants.

2. It absorbs water and minerals from soils. 

3. It synthesises plant Growth regulators.

4. Roots store reserve foods.

A.  2, 3 and 4 

B.  1, 2 and 3

C.  1, 3 and 4

D. 1, 2 , 3 and 4

Answer: D Explanation 

8. Match the List 

A. Tap root       1. Wheat

B. Fibrous root 2. Mustard

C. Adventitious 3. Monstera

    Root 

      A      B     C 

A.   1      2      3

B.   2      1      3

C.   2      3      1

D.   1      3      2

Answer: B Explanation 

9. Which part of root is covered by root cap.

A. Base of root 

B. Terminal part of root

C. Apex part of root

D. Intercalary part of root

Answer: C  Explanation 

10. Which one the following statement is incorrect for Meristmatic region of root.

A. The region of Meristmatic activity is located above the few Millimeter of root cap.

B. The cells of this region are rich in cytoplasm and thin walled.

C. The cells of this region form epidermal root hair .

D. The cells of this region divide repeatedly.

Answer: C  Explanation 

11. Given below are two statements and select the correct option

Statement I :  Proximal part of  Meristmatic region is called Region of Elongation.

Statement Il : cells  undergo the rapid elongation and enlargement and increase the length of root. 

A. Statement l is true and statement ll is false.

B. Statement l is false and statement ll is true.

C. Both statement I and II is true.

D. Both statement I and II is false.

Answer: C  Explanation 

12. Consider the following statement and select the correct code:

1. Region of maturation of root is formed by the differentiation and maturation of cells of elongation region.

2.The epidermal cells of region of maturation form fine, hair like root hair to absorb water and minerals from the soil.

A. Only 1

B. Only 2

C. Both 1 and 2

D. Neither 1 nor 2

Answer: C  Explanation 

13. In the given Diagram, which region  causes increase in length of root.

A.D   B. C    C. A.  D. E

Answer: C  Explanation

14.Stem is originated from which part of the plant embryo ?

A. Plumule      B. Radicle

C. Cotyledon   D.Epicotyl

Answer: A Explanation 

14. Which one of the following statement is incorrect.

A. The stem is the ascending part of the stem that bears leaves, flowers and fruits.

B. The region from where leaves originated, called nodes.

C. Stem is soft and green at older stages but turns woody and tough at young stages.

D. The region between the two nodes is called internode.

Answer: C Explanation

15. Stem bear bud which may be 

A. Axillary       

B. Terminal 

C. Axillary and terminal 

D  Axillary or terminal 

Answer:  D Explanation

16. Consider the following  function which  is not carried by the every stem and select the correct code:

1. Photosynthesis 

2. Vegetative propagation 

3. Storage and support 

4. Conduct water and mineral.

A. 1, 2 and 3    B. 2, 3 and 4

C. 1, 3 and 4    D. 1, 2, 3 and 4

Answer:  D Explanation