Endarch

Q.

Differences between Endarch and Exarch.

Q.

Write the difference between endarch and exarch.

Q. In a centripetal xylem:

1. The protoxylem develops towards the centre & metaxylem towards the periphery
2. The protoxylem develops towards the periphery & metaxylem towards the centre
3. Both protoxylem & metaxylem develop towards the centre
4. Both protoxylem & metaxylem develop towards the periphery

Q. Two cross-sections of stem and root appear simple, when viewed by the naked eye. But under microscope, they can be differentiated by

1. exarch condition of root and stem
2. endarch condition of stem and root
3. endarch condition of root and exarch condition of the stem
4. endarch condition of stem and exarch condition of the root

Q. Fibrous roots originate from:

1. Radicle
2. Primary root
3. Base of the stem
4. Lateral roots

Q. Outer covering of epiphytic root is called

1. osmophore
2. rhizophore
3. pneumatophore
4. velamen

Q. Two cross-sections of stem and root appear simple, when viewed by the naked eye. But under microscope, they can be differentiated by

1. exarch condition of root and stem
2. endarch condition of stem and root
3. endarch condition of root and exarch condition of the stem
4. endarch condition of stem and exarch condition of the root

Q. is a type of arrangement of xylem where the protoxylem lies towards the centre and the metaxylem lies towards the periphery.

1. Enarch
2. Mesarch
3. Endarch
4. Exarch

Q. Two cross-sections of stem and root appear simple when viewed with the naked eye. But under the microscope, they can be differentiated by

1. exarch condition of root and stem
2. endarch condition of stem and root
3. endarch condition of root and exarch condition of the stem
4. endarch condition of stem and exarch condition of the root

Q. Choose the correct labelling of the parts marked as A to F.

1. A – Phellem, B – Phellogen, C – Medullary rays, D – Secondary xylem, E – Secondary phloem, F – Cambium ring
2. A – Phellem, B – Phellogen, C – Medullary rays, D – Secondary phloem, E – Secondary xylem, F – Cambium ring
3. A – Phellogen, B – Phellem, C – Medullary rays, D – Secondary xylem, E – Secondary phloem, F – Cambium ring
4. A – Phellem, B – Phellogen, C – Cambium ring, D – Secondary xylem, E – Secondary phloem, F – Medullary rays

Q. In stems, the protoxylem lies towards the _________ and the metaxylem lies towards the ________ of the organ.

1. centre; periphery
2. periphery; centre
3. periphery; periphery
4. centre; centre

Q. The xylem grows inside out in endarch type of xylem.

1. 1= t, 2=p, 3=s, 4=q

2. 1=s, 2= t, 3=r, 4=q

Q. A major characteristic of the monocot root is the presence of

1. Vasculature without cambium.
2. Open vascular bundles.
3. Cambium sandwiched between phloem and xylem along the radius.
4. Scattered vascular bundles.

Q. is a type of arrangement of xylem where the protoxylem lies towards the centre and the metaxylem lies towards the periphery.

1. Enarch
2. Mesarch
3. Endarch
4. Exarch

Q. In stems, the protoxylem lies towards the _________ and the metaxylem lies towards the ________ of the organ.

1. periphery; periphery
2. centre; centre
3. periphery; centre
4. centre; periphery

Q. In stem, the proto-xylem lies towards the _____________ and the meta-xylem lies towards the ____________

1. center; periphery
2. periphery; center
3. ventral ; dorsal
4. dorsal ; ventral

Q. A common character of monocot and dicot roots is

1. Exarch protoxylem
2. Endarch xylem
3. Number of xylem strands
4. Occurrence of secondary growth

Q. The xylem grows inside out in endarch type of xylem.

1. True
2. False

Q. Which of the following is correct sequence of layers in typical monocot root from outside to inside?

1. Pericycle, cortex, endodermis, epiblema
2. Epiblema, endodermis, cortex, pericycle
3. Epiblema, cortex, endodermis, pericycle
4. Epiblema, pericycle, cortex, endodermis

Q. Choose the correct pair.

1. 
2. Endarch
3. 
4. Exarch
5. Mesarch
6. 

Q. Which of the following is a correct sequence of layers in typical monocot root (from outer surface to inside)?

1. Pericycle, cortex, endodermis, epiblema
2. Epiblema, endodermis, cortex, pericycle
3. Epiblema, cortex, endodermis, pericycle
4. Epiblema, pericycle, cortex, endodermis

Q. Suberin is

1. Polysaccharide
2. Protein
3. Fatty substance
4. Pectocellulose

Q. Two cross-sections of stem and root appear simple when viewed with the naked eye. But under the microscope, they can be differentiated by

1. exarch condition of root and stem
2. endarch condition of stem and root
3. endarch condition of root and exarch condition of the stem
4. endarch condition of stem and exarch condition of the root

Q. Distinguish between the following:
Protoxylem and metaxylem

Q. Cortex and pith are not distinguished in

1. Monocot stem
2. Monocot root
3. Dicot stem
4. Dicot root