Plant Anatomy (GATE - XL)
Plant anatomy concepts including meristems, vascular tissues, stems, roots, and plant structures for GATE-XL preparation
Questions
Which of the following organelles is/are not present in meristematic cells?
- Vacuoles
- Mitochondria
- Plastids
- Cell wall
Usually, apical meristems are found in two locations: the root and the stem. In which of the following plants is apical meristem found in lower/middle parts of the plant?
- Desert plants
- Arctic plants
- Tropical plants
- Aquatic plants
A kind of vascular bundle in which phloem lies only on one side of xylem, usually towards the stem interior, is found in
- lilies
- rose
- pumpkin
- yucca
In which of the following plants is unifacial cambium found?
- Rosemary
- Lycophyte
- Mango
- Lianas
Which kind of xylem development takes place in ferns?
- Endarch
- Exarch
- Mesarch
- Centrarch
Caudex is the thickened, usually underground base of the stem of many perennial herbaceous plants, from which new leaves and flowering stems arise. In which of the following plants is it found?
- Polygonum glaucum
- Uraria Picta
- Jatropha cathartica
- Polygonum plebeium
Who first used the term meristem?
- Ernst Haeckel
- Karl Wilhelm von Nägeli
- Van Neil
- Stephen Hales
Stele is the central part of root or stem containing the tissues derived from the procambium. Which of the following stelae is prevalent in Rhynia?
- Haplostele
- Plectostele
- Actinostele
- Siphonostele
In plant-root anatomy, what is the band of cells located between the endodermis and phloem known as?
- Pith
- Pericycle
- Vascular cambium
- Cork cambium
Which of the following statements about central zone is false?
- Central zone is a small group of rapidly dividing cells.
- Central zone cells function like stem cells.
- Central zone plays a prominent role in meristem maintenance.
- Central zone is present at the meristem summit.
Which plant(s) is/are used to make pith helmet?
- Sago palm
- Sola pith plant
- Walnuts
- Ivy plant
Consider the statements given below:
A: Aphids are typically found on the underside of a leaf.
B: Phloem is oriented towards the abaxial surface of a leaf.
Which of the following options is correct?
- A is incorrect, but B is correct.
- Both A and B are correct and B is the correct explanation of A.
- Both A and B are correct, but B is not a correct explanation of A.
- A is correct, but B is incorrect.
Which of the following organisms induce(s) meristem in the roots of Lotus japonicus?
- Archaebacteria
- Mycorrhiza
- Phosphate solubilising bacteria (PSB)
- Rhizobium
Maryland Mammoth is a mutant tobacco plant. Which of the following meristems was manipulated to obtain this mutant?
- Shoot meristem
- Floral meristem
- Intercalary meristem
- Shoot meristem
Which of the following is the correct term for rate of emergence of leaves from the apical bud?
- Chronaxis
- Plastochron
- Phyllochron
- Isochron