Root and Its Parts

Q.

Is carrot a root or stem?

Q. Complete the given analogy

Hydrarch succession : progresses from hydric to mesic conditions :: Xerarch succession: ___________

1. progresses from xeric to mesic conditions
2. progresses from mesic to xeric conditions
3. progresses from xeric to hydric conditions
4. progresses from hydric to xeric conditions

Q.

What are root hairs? Mention their function.

Q. Root apical meristem and shoot apical meristem are responsible for the growth of plants and principally contribute to the elongation of the plants along their axis. This growth is called

1. Both B and C
2. Secondary growth
3. Indeterminate growth
4. Primary growth

Q. Roots of Cycas has a specialized tap root branching called coralloid roots which help in:

1. Fixation of $C{O}_2$
2. Fixation and absorption of nitrogen
3. Respiration
4. Absorption of minerals

Q.

State whether the following statements are true or false.

Absorption of water helps in the intake of inorganic salts from the soil.

1. True
2. False

Q.

The​ sweet potato have tap root or fibrous root?

Q. The root develops from

1. shoot apex
2. radicle
3. plumule
4. stem

Q.

97 How do the roots of land plants get oxygen for respiration?

Q.

List the characteristics of root hair that make it suitable for absorbing water?

Q.

What change do you notice in plant if the stem tip is cut?

Q. Assertion :Root nodules in leguminous plants are inhabited by Anabaena Reason: Leguminous plants are an example of symbiotic nitrogen fixation

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion ts true but the reason is false
4. If both the assertion and reason are false

Q. The path of water movement from soil to xylem is

1. soil protoxylem cortex metaxylem root hair
2. soil root hair cortex endodermis pericycle metaxylem protoxylem
3. soil root hair cortex endodermis pericycle protoxylem metaxylem
4. soil root hair pericycle cortex endodermis protoxylem metaxylem

Q. Which is the correct order for the zones of the root below upwards?
i. Region of elongation
ii. Region of Meristemic activity
iii. Region of maturation
iv. Region of root cap

1. i, ii, iii, iv
2. iii, i, ii, iv
3. iv, ii, i, iii
4. iv, ii, iii, i

Q. The function of root cap is to

1. Protect the root tip
2. Protect the root hairs
3. Cover the root
4. Growth of the root

Q.
Which one is odd?

1. 
   Opium poppy gives pleasant feeling
2. 
   Claviceps Purpurea-Hallucinogenic
3. 
   Erythrolum Coca-Potent stimulating action
4. 
   Cannabis Sativa-give pain

Q.

Roots are absent in

1. Wolffia

2. Podostemon

3. Pistia

4. Lemma

Q.

Why is the structure of a root hair considered suitable for absorbing water from the soil?

Q. The root develops from

1. radicle
2. plumule
3. stem
4. shoot apex

Q. How are roots useful to the plants ? Give any two points.

Q. Consider the following statements regarding the root system of angioserms.
I. In monocots, the fibrous root system arises from base of stem.
II. Region of elongation is called root hair zone.
III. In sweet potato, adventitious roots get swollen and store food.
IV. Stem of Maiza and Sugarcane have supporting roots called prop roots.

1. I and II correct, III and IV wrong
2. II and III correct, I and IV wrong
3. I and III correct, II and IV wrong
4. II and IV correct, I and III wrong
5. IV correct, I, II, and III wrong

Q. In monocot stems, secondary growth cannot occur, because vascular bundles are

1. Scattered
2. Open
3. Closed
4. Radial

Q. Cuticle is absent in

1. Mesophytes
2. Young roots
3. Leaves
4. Mature stem

Q. What essential role does the root endodermis play during mineral absorption in plants?

Q. List the various functions of root.

Q.

What are roots primarily involved In?

Q. Rewrite the correct terms in the correct order so, as to be in a logical sequence.

Endodermis, cortex, soil water, xylem, root hair.

Q. A root grows in length, which region of the root is responsible for this growth?

1. Region of meristematic activity
2. Region of elongation
3. Root cap
4. Region of maturation

Q. Velamen cells are found in epiphytes

1. Just outside the cortex
2. Just outside the exodermis
3. Below the endodermis
4. Below the epidermis

Q. Which of the following is absent in a root hair?

1. Cell wall
2. Vacuole
3. Nucleus
4. Chloroplast