Exarch

Q.

Take a look at the diagram below and ascertain the type of xylem. Consider the upper side to be the outer side and the lower side to be the inner side.

1. 1- Mesarch, 2- Endarch, 3- Exarch

2. 1- Endarch, 2- Exarch, 3- Mesarch

3. 1- Exarch, 2- Endarch, 3- Mesarch

4. 1- Endarch, 2- Mesarch, 3- Exarch

Q. What happens to primary phloem in stem after secondary growth?

1. Compresses inside and degenerates
2. Becomes part of secondary phloem
3. Compresses outside and degenerates
4. Modifies into sclerenchyma

Q.

Take a look at the diagram below and ascertain the type of xylem. Consider the upper side to be the outer side and the lower side to be the inner side.

1. 1- Mesarch, 2- Endarch, 3- Exarch

2. 1- Endarch, 2- Exarch, 3- Mesarch

3. 1- Exarch, 2- Endarch, 3- Mesarch

4. 1- Endarch, 2- Mesarch, 3- Exarch

Q.

Protoxylem is the first formed xylem. If the protoxylem lies next to phloem what kind of arrangement of xylem would you call it?

Q. Exarch xylem is found in

1. Root
2. Leaf
3. Rachis
4. Stem

Q.

Take a look at the diagram below and ascertain the type of xylem. Consider the upper side to be the outer side and the lower side to be the inner side.

1. 1- Mesarch, 2- Endarch, 3- Exarch

2. 1- Endarch, 2- Exarch, 3- Mesarch

3. 1- Exarch, 2- Endarch, 3- Mesarch

4. 1- Endarch, 2- Mesarch, 3- Exarch