MCQ’S ON INTERNAL STRUCTURE OF ROOT STEM AND LEAF
1. Well-developed pith is found in
(a) Monocot root and Dicot stem
(b) Dicot root and Dicot stem
(c) Dicot root and Monocot stem
(d) Dicot and Monocot stems
Answer: (a)
2. In monocot leaf
(a) Veins form a network
(b) Mesophyll is not differentiated into palisade and spongy parenchyma
(c) Mesophyll is well differentiated into these parts
(d) Bulliform cells are absent from epidermis
Answer: (b)
3. In orchids, Velamen tissues is found in
(a) Leaves
(b) Root
(c) Flowers
(d) Shoot
Answer: (b)
4. Polyarch and exarch vascular bundles occur in
(a) Dicot stem
(b) Monocot stem
(c) Dicot root
(d) Monocot root
Answer: (d)
5. Collenchymatous hypodermis is characteristics of
(a) Hydrophytes
(b) Monocot and dicot stem
(c) Monocot stem
(d) Dicot stem
Answer: (d)
6. The lacunae in the vascular bundles of monocot stem is
(a) Metaxylem
(b) A mucilage canal
(c) Lysigenous water cavity
(d) A large sized protoxylem
Answer: (c)
7. The protoxylem in its midrid bundle in a vertical section of a dorsiventral leaf
(a) is not distinct
(b) faces the ventral epidermis of the leaf
(c) faces the dorsal epidermis of the leaf
(d) is surrounded by metaxylem
Answer: (c)
8. This is not a characteristic feature of anatomy of dicotyledonous root
(a) Pith little or absent
(b) Secondary growth
(c) Radial vascular bundles
(d) Vascular bundles 15-20
Answer: (d)
9. Vascular bundles are scattered in
(a) Dicot stem
(b) Dicot root
(c) Bryophytes
(d) Monocot stem
Answer: (d)
10. The correct situation of mesophyll in isobilateral grass leaf is shown by
(a) Palisade along both the surface
(b) Undifferentiated mesophyll
(c) Palisade towards abaxial surface
(d) Palisade towards adaxial surface
Answer: (b)
