Questions
In dicotyledonous plants, the direct elongation of the radicle leads to the formation of __________.
- lateral root
- primary root
- shoot
- prop root
- none of these
The leaf is a lateral, generally flattened structure borne on the stem, which develops at the ______________.
- stipule
- node
- petiole
- axillary bud
- leaf base
In the plant, Australian acacia, __________ expands, becomes green and synthesize food.
- bulb
- leaves
- petiole
- stem
- stipule
Which of the following is not a modification of leaves?
- Bulb of garlic
- Tendril of peas
- Spines of cacti
- Bougainvillea thorns
- None of these
In a _____________leaf, a number of leaflets are present on the rachis.
- palmately compound
- pinnately compound
- simple
- both 1 and 2
- all 1, 2 and 3
Which of the following is/are false regarding the term phyllotaxy?
a) It is the arrangement of flowers and leaves on a stem.
b) It is the arrangement of leaves on a stem.
c) It can be of two types, opposite and alternate.
- only a
- only b
- a, b and c
- a and c
- b and c
Find the odd one out.
(a) Tracheids
(b) Vessels
(c) Xylem fibres
(d) Xylem parenchyma
(e) Sieve tubes
- (a)
- (b)
- (c)
- (d)
- (e)
________ are responsible for the formation of primary plant body and its growth.
- Apical meristem and intercalary meristem
- Simple tissues and complex tissues
- Meristematic and permanent tissues
- Parenchyma and collenchyma
- Sclerenchyma and collenchyma
An arrangement in which xylem and phloem are arranged alternately is called
- conjoint
- radial
- open vascular bundle
- closed vascular bundle
- None of these
In grasses, the guard cells of stomata are of __________ shape.
- dumbbell
- bean
- cylindrical
- round
- none of these
Which of the following statements is/are true regarding the function of veins in a leaf?
a) It gives a beautiful look.
b) It provides rigidity to the leaf blade.
c) It gives the leaf its green colour.
d) It helps in transport of food and water.
- a and d
- b and d
- c and d
- a and c
- a, b and d
Which of the following option does not show the function of a stem?
- Storing food
- Support and function
- Vegetative propagation
- Photosynthates
- None of these
Dermal tissues, ground tissues and vascular tissues are produced by
- intercalary meristem tissues
- apical meristem tissues
- parenchyma tissues
- collenchyma tissues
- sclerenchyma tissues
Which of the following types of lateral meristems are involved in secondary growth?
- Epidermis and endodermis
- Peripheral and central
- Xylem and phloem
- Vascular cambium and cork cambium
- None of these
Which of the following statements is false regarding epidermal tissue of plants?
- It is made of elongated compact cells.
- Cuticle is present in stem and root.
- Stoma is found in this layer.
- Its cells bear hair.
- It is the outermost layer.