Water containing cavities in vascular bundles are found in 

• sunflower

• maize

• Cycas

• Cycas

To obtain virus - free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?

• Apical meristem only

• Palisade parenchyma

• Both apical and axillary meristems

• Both apical and axillary meristems

As compared to a dicot root, a monocot root has

• more abundant secondary xylem

• many xylem bundles

• inconspicuous annual rings

• inconspicuous annual rings

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structure will you use to distinguish between the two?

• Secondary xylem

• Secondary phloem

• Protoxylem

• Protoxylem

Vascular bundles in monocotyledons are considered closed because

• a bundle sheath surrounds each bundle

• cambium is absent

• there are no vessels with perforations

• there are no vessels with perforations

A major characteristic of the monocot root is the presence of

• Open vascular bundles

• Scattered vascular bundles

• Vasculature without cambium

• Vasculature without cambium

The Eyes of the potato tuber are

• flower buds

• shoot buds

• axillary buds

• axillary buds

In land plants, the guard cells differ from other epidermal cells in having

• mitochondria

• endoplasmic reticulum

• chloroplasts

• chloroplasts

The cork cambium, cork and secondary cortex are collectively called

• Phellogen

• Periderm

• phellem

• phellem

50.

Function of copanion cells is 

• providing energy to sleve elements for active transport

• Providing water to phloem

• loading of sucrose into sieve elements by passive transport

• loading of sucrose into sieve elements by passive transport