General
✓✗Secondary meristems are derived from
- intercalary meristems
- primary permanent tissues
- promeristems
- primary meristems
General
✓✗Which tissue system forms the bulk of the plant body?
- Meristematic
- Epidermal
- Vascular
- Ground
General
✓✗Which one of the following is not formed from the procambium?
- Primary xylem
- Interfascicular cambium
- Primary phloem
- Intrafascicular cambium
General
✓✗Which of the following features is present in a dicot stem but absent in a monocot stem?
- Sclerenchymatous hypodermis
- Bundle sheath of sclerenchyma
- Scattered vascular bundles
- Medullary rays and a distinct pith
General
✓✗Aerenchyma helps hydrophytes by
- promoting photosynthesis
- storing food
- providing buoyancy
- giving mechanical strength
General
✓✗Collenchyma differs from parenchyma in having
- thickening of cellulose, hemicellulose and pectin at the corners
- thin cellulose walls with small intercellular spaces
- living protoplasm with a central vacuole and nucleus
- lignified secondary walls with numerous simple pits
General
✓✗The phellogen is a couple of layers thick and is made of
- large, round cells with air spaces
- narrow, thin-walled and nearly rectangular cells
- dead lignified cells
- elongated fibres
General
✓✗The ground tissue of a monocot stem is
- made of collenchyma
- a large, conspicuous parenchymatous tissue
- differentiated into cortex, pericycle and pith
- made of sclerenchyma only
General
✓✗Axillary buds are capable of forming
- only cork
- only roots
- only leaves
- a branch or a flower
General
✓✗Primary growth of a plant is brought about by
- apical meristems
- vascular cambium
- cork cambium
- interfascicular cambium
General
✓✗Xylem fibres have highly thickened walls and
- obliterated central lumens
- dense cytoplasm
- large central vacuoles
- sieve plates
General
✓✗Which of the following statements about the dicot root are correct?
A. The epiblema bears unicellular root hairs.
B. The endodermis has Casparian strips.
C. The pith is large and well developed.
D. There are usually two to four xylem and phloem patches.
E. The vascular bundles are conjoint and open.
Choose the correct answer.
A. The epiblema bears unicellular root hairs.
B. The endodermis has Casparian strips.
C. The pith is large and well developed.
D. There are usually two to four xylem and phloem patches.
E. The vascular bundles are conjoint and open.
Choose the correct answer.
- A, B and D only
- A, B, D and E only
- B, C and D only
- A, C and E only
General
✓✗The pith (central part of the ground tissue) is made of
- sclerenchyma
- collenchyma
- chlorenchyma
- parenchyma
General
✓✗Given below are two statements.
Statement I: Xylem parenchyma cells are living and thin-walled, and their cell walls are made up of cellulose.
Statement II: The radial conduction of water takes place through the ray parenchymatous cells.
In the light of the above statements, choose the correct answer from the options given below.
Statement I: Xylem parenchyma cells are living and thin-walled, and their cell walls are made up of cellulose.
Statement II: The radial conduction of water takes place through the ray parenchymatous cells.
In the light of the above statements, choose the correct answer from the options given below.
- Both Statement I and Statement II are correct.
- Both Statement I and Statement II are incorrect.
- Statement I is correct but Statement II is incorrect.
- Statement I is incorrect but Statement II is correct.
General
✓✗The fatty substance in the outer walls of epidermal cells that forms the cuticle is
- lignin
- cutin
- suberin
- pectin